Create Or Alter Package

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Latest Version: 

1.2.0

Supported Platform: 

Release Date: 

August 11, 2025

Package ID: 

@coalesce/snowflake/create-or-alter-package 

Coalesce Certified Package

Overview

The package includes Create or Alter node types

Installation

• Copy the Package ID  @coalesce/snowflake/create-or-alter-package
• In Coalesce, open the Workspace where you wish to install the package.
• Go to the Build Setting of the Workspace, tab Packages, and click the Install button on the top right of the page.
• Paste the Package ID, and proceed with the installation process.

Description

Create or Alter package

Create or Alter package includes:

• Create or Alter table
• Create or Alter view
• Create or Alter Dimension
• Create or Alter Fact
• Create or Alter Persistent Stage
• Create or Alter Task
• Create or Alter DAG Root Task
• Create DAG Root Resume Task
• Code

Create or Alter table

The Create or alter table creates table if it doesn’t exist, or alters it according to the table definition.

Create or Alter Node properties

Create Or Alter has two configuration groups:

• Node Properties
• Create table Options
• Insert data Options

Create or Alter Node Properties

Property	Description
Storage Location	(Required) Storage Location where the Create Or Alter Table will be created
Node Type	(Required) Name of template used to create node objects
Description	A description of the node's purpose
Deploy Enabled	If TRUE the node will be deployed/redeployed when changes
are detected If FALSE the node will not be deployed or will be dropped during redeployment

Create table Options

Options	Description
Create As	Choose 'table' or 'transient table'
Cluster key	True/False toggle for clustering: True: Specify clustering
column and optional expressions False: No clustering
Change Tracking	Toggle to enable or disable change tracking on the table.
Enable Schema Evolution	Toggle to enable or disable schema evolution.
Inline Constraints	Toggle to enable inline constraints:True: Specify column name and constraint specification False: No constraints
Out-Of-Line Constraints	Toggle to enable or disable out-of-line constraints.
When enabled, you can define both primary and foreign keys.
Data Retention Time	Set the number of days for data retention for Time Travel actions.
Default DDL Collation	Set the default collation specification for the DDL operations.

Insert data Options

Options	Description
Multi Source	Toggle: True/False Implementation of SQL UNIONs True: Combine multiple sources in a single node True Options: - UNION: Combines with duplicate elimination - UNION ALL: Combines without duplicate elimination - INSERT: Individual insert for each source False: Single source node or multiple sources combined using a join.
Truncate Before	Toggle: True/False This determines whether a table will be overwritten each time a task executes. True: Uses INSERT OVERWRITE False: Uses INSERT to append data
Enable tests	Toggle: True/False Determines if tests are enabled
Distinct	Toggle: True/False True: Group by All is invisible. DISTINCT data is chosen for processing. False: Group by All is visible.
Group by All	Toggle: True/False True: DISTINCT is invisible, data grouped by all columns False: DISTINCT is visible
Order By	Toggle: True/False True: Sort column and sort order drop down are visible and are required to form order by clause. False: Sort options invisible

Limitations of Create or Alter Table

• Collation specifications cannot be altered.
• Setting or unsetting an inline primary key changes the nullability of the column accordingly
• New columns can only be added to the end of the column list
• Columns cannot be renamed. If you attempt to rename a column, the column is dropped and a new column is added.WHen you rename a column in Coalesce mapping grid.Ensure to move the same to the end of column list in mapping grid.

Create Or Alter Table Deployment

Create Or Alter Table Initial Deployment

When deployed for the first time into an environment the Create or Alter table node of materialization type table or transient table will execute the below stage:

Stage	Description
Create/Alter table/transient table	This will execute a CREATE OR ALTER statement and create a table in the target environment

Create Or Alter Table Redeployment

Altering the Tables and Transient Tables

When redeployed with change in target location or change in node name,results in alter of the table

Stage	Description
Rename/Move Table	Alter table statement is executed to perform the alter operation

Changing Materialization Type

Change	Stages Executed
Table to transient table or vice versa	Drop table/transient table Create or Alter table/transient table

Recreating the Create Or Alter Table

When the Create or Alter table node is redeployed with any changes in table or config changes result in re-creating table

Stage	Description
Create/Alter table/transient table	This will execute a CREATE OR ALTER statement and create a table in the target environment

Redeployment with no changes

If the nodes are redeployed with no changes compared to previous deployment,then no stages are executed

Create Or Alter Tables Undeployment

If a Create or Alter table node of materialization type table/transient table are deleted from a Workspace, that Workspace is committed to Git and that commit deployed to a higher level environment then the table in the target environment will be dropped.

This is executed in below stage:

Stage	Description
Drop table/transient table	Removes the table from the environment

Create or alter view

A create or alter view node creates a new view if it doesn’t already exist, or updates the properties of an existing view to match those defined in the statement.

Create or Alter View Node properties

Create Or Alter has two configuration groups:

• Node Properties
• Create view Options

Create or Alter View Node Properties

Property	Description
Storage Location	(Required) Storage Location where the Create Or Alter Table will be created
Node Type	(Required) Name of template used to create node objects
Description	A description of the node's purpose
Deploy Enabled	If TRUE the node will be deployed/redeployed when changes
are detected If FALSE the node will not be deployed or will be dropped during redeployment

Create view Options

Options	Description
Secure	True/False toggle for secure view: True:creates a secure view False: Normal view
Change Tracking	Toggle to enable or disable change tracking on the table.
Distinct	Toggle: True/False True: Group by All is invisible. DISTINCT data is chosen for processing. False: Group by All is visible.
Group by All	Toggle: True/False True: DISTINCT is invisible, data grouped by all columns False: DISTINCT is visible
Multi Source	Toggle: True/False Implementation of SQL UNIONs True: Combine multiple sources in a single node True Options: - UNION: Combines with duplicate elimination - UNION ALL: Combines without duplicate elimination - INSERT: Individual insert for each source False: Single source node or multiple sources combined using a join.

Limitations of Create or Alter View

• The CREATE OR ALTER VIEW command doesn’t support changing a view definition once a view is created. In Coalesce,it is supported by dropping and recreating the view during redeployment.

Create Or Alter View Deployment

Create Or Alter View Initial Deployment

When deployed for the first time into an environment the Create or Alter view node will execute the below stage:

Stage	Description
Create/Alter view	This will execute a CREATE OR ALTER statement and create a view in the target environment

Create Or Alter View Redeployment

Altering the View

When redeployed with change in target location or change in node name,results in alter of the view

Stage	Description
Rename/Move View	Alter view statement is executed to perform the alter operation

Recreating the Create Or Alter View

When the Create or Alter view node is redeployed with any changes in secure,change_tracking or multi-source config options,create or alter view is executed again.

Stage	Description
Create/Alter View	This will execute a CREATE OR ALTER statement and create a view in the target environment

Change in view definition

Change in view definition like change in columns,add or drop columns,change in data type ,adding distinct or group by all results in below stages

Stage	Description
Create/Alter View	This will execute a CREATE OR ALTER statement and create a view in the target environment

Redeployment with no changes

If the nodes are redeployed with no changes compared to previous deployment,then no stages are executed

Create Or Alter Tables Undeployment

If a Create or Alter view node are deleted from a Workspace, that Workspace is committed to Git and that commit deployed to a higher level environment then the table in the target environment will be dropped.

This is executed in below stage:

Stage	Description
Drop View	Removes the table or view from the environment

---

Create or Alter Dimension

The Create or alter creates dimension table if it doesn’t exist, or alters it according to the table definition.

Create or Alter Dimension Node

Create Or Alter has two configuration groups:

• Node Properties
• Create Table Options
• Insert Data Options

Create or Alter Dimension Node Properties

Property	Description
Storage Location	(Required) Storage Location where the Create Or Alter Dimension Table will be created
Node Type	(Required) Name of template used to create node objects
Description	A description of the node's purpose
Deploy Enabled	If TRUE the node will be deployed/redeployed when changes are detected If FALSE the node will not be deployed or will be dropped during redeployment

Create Table Options

Options	Description
Create As	Choose 'table' or 'transient table'
Cluster key	True/False toggle for clustering True: Specify clustering column and optional expressions False: No clustering
Change Tracking	Toggle to enable or disable change tracking on the table.
Enable Schema Evolution	Toggle to enable or disable schema evolution.
Inline Constraints	Toggle to enable inline constraints True: Specify column name and constraint specification False: No constraints
Out-Of-Line Constraints	Toggle to enable or disable out-of-line constraints When enabled, you can define both primary and foreign keys.
Data Retention Time	Set the number of days for data retention for Time Travel actions. Available only for materialization type - table
Maximum Data Extension time	Set the number of days for max data extension for Historical data access. Available only for materialization type - table
Default DDL Collation	Set the default collation specification for the DDL operations.

Insert data Options

Options	Description
Multi Source	Toggle: True/False Implementation of SQL UNIONs True: Combine multiple sources in a single node True Options: - UNION: Combines with duplicate elimination - UNION ALL: Combines without duplicate elimination False: Single source node or multiple sources combined using a join.
Truncate Before	Toggle: True/False This determines whether a table will be overwritten each time a task executes. True: Uses INSERT OVERWRITE False: Uses INSERT to append data
Enable tests	Toggle: True/False Determines if tests are enabled
Business key	Required column for both Type 1 and Type 2 Dimensions Note: Geometry and Geography data type columns are not supported as business key columns.
Change tracking	Required column for Type 2. If not chosen, treated as type 1
Distinct	Toggle: True/False True: Group by All is invisible. DISTINCT data is chosen for processing. False: Group by All is visible.
Group by All	Toggle: True/False True: DISTINCT is invisible Data grouped by all columns False: DISTINCT is visible
Order By	Toggle: True/False True: Sort column and sort order drop down are visible and are required to form order by clause. False: Sort options invisible
Insert Zero Key Record	Toggle: True/False Insert Zero Key Record to Dimension True: Zero Key Record Options enabled. False: Zero Key Record not added
Zero Key Record Options	Add custom zero key record values for : -Default Surrogate Key -Default String Value -Default Date Value (Date Format DD-MM-YYYY) -Default Timestamp Value (Timestamp Format YYYY-MM-DD HH24:MI:SS.FF) -Default Boolean Value
Advanced Zero Key Record Options	Toggle: True/False True: Select Columns and the default value of the column for zero key record False: Advanced Zero Key Record Options not enabled

Limitations of Create or Alter Dimension Table

• Collation specifications cannot be altered.
• Setting or unsetting an inline primary key changes the nullability of the column accordingly
• New columns can only be added to the end of the column list
• Columns cannot be renamed. If you attempt to rename a column, the column is dropped and a new column is added. When you rename a column in Coalesce mapping grid, ensure to move the same to the end of column list in mapping grid.
• A column's default value can only be set during its initial creation using a CREATE OR ALTER statement; re-running the statement with a different default value will result in an error and will not update/alter/drop the existing default or add a new default.

Create Or Alter Dimension Table Deployment

Create Or Alter Dimension Table Initial Deployment

When deployed for the first time into an environment the Create or Alter table node of materialization type table or transient table will execute the below stage:

Stage	Description
Create/Alter table/transient table	This will execute a CREATE OR ALTER statement and create a table/transient table in the target environment

Create Or Alter Dimension Table Redeployment

Altering the Tables and Transient Tables

When redeployed with change in target location or change in node name, results in alter of the table

Stage	Description
Rename/Move Table	Alter table statement is executed to perform the alter operation

Changing Materialization Type

Change	Stages Executed
Table to transient table or vice versa	Drop table/transient table Create or Alter table/transient table

Recreating the Create Or Alter Table

When the Create or Alter table node is redeployed with any changes in table or config changes result in re-creating table

Stage	Description
Create/Alter table/transient table	This will execute a CREATE OR ALTER statement and create a table in the target environment

Redeployment with no changes

If the nodes are redeployed with no changes compared to previous deployment, then no stages are executed

Create Or Alter Tables Undeployment

If a Create or Alter table node of materialization type table/transient table are deleted from a Workspace, that Workspace is committed to Git and that commit deployed to a higher level environment then the table in the target environment will be dropped.

This is executed in below stage:

Stage	Description
Drop table/transient table	Removes the table from the environment

---

Create or Alter Fact

The Create or alter creates fact table if it doesn’t exist, or alters it according to the table definition.

Create or Alter Fact Node

Create Or Alter has two configuration groups:

• Node Properties
• Create Table Options
• Insert Data Options

Create or Alter Fact Node Properties

Property	Description
Storage Location	(Required) Storage Location where the Create Or Alter fact Table will be created
Node Type	(Required) Name of template used to create node objects
Description	A description of the node's purpose
Deploy Enabled	If TRUE the node will be deployed/redeployed when changes are detected If FALSE the node will not be deployed or will be dropped during redeployment

Create Table Options

Options	Description
Create As	Choose 'table' or 'transient table'
Cluster key	True/False toggle for clustering True: Specify clustering column and optional expressions False: No clustering
Change Tracking	Toggle to enable or disable change tracking on the table.
Enable Schema Evolution	Toggle to enable or disable schema evolution.
Inline Constraints	Toggle to enable inline constraints True: Specify column name and constraint specification False: No constraints
Out-Of-Line Constraints	Toggle to enable or disable out-of-line constraints When enabled, you can define both primary and foreign keys.
Data Retention Time	Set the number of days for data retention for Time Travel actions. Available only for materialization type - table
Maximum Data Extension time	Set the number of days for max data extension for Historical data access. Available only for materialization type - table
Default DDL Collation	Set the default collation specification for the DDL operations.

Insert Data Options

Options	Description
Multi Source	Toggle: True/False Implementation of SQL UNIONs True: Combine multiple sources in a single node True Options: - UNION: Combines with duplicate elimination - UNION ALL: Combines without duplicate elimination False: Single source node or multiple sources combined using a join.
Truncate Before	Toggle: True/False This determines whether a table will be overwritten each time a task executes. True: Uses INSERT OVERWRITE False: Uses INSERT to append data
Enable tests	Toggle: True/False Determines if tests are enabled
Business key	Required column for Fact table creation. Note: Geometry and Geography data type columns are not supported as business key columns.
Distinct	Toggle: True/False True: Group by All is invisible. DISTINCT data is chosen for processing. False: Group by All is visible.
Group by All	Toggle: True/False True: DISTINCT is invisible Data grouped by all columns False: DISTINCT is visible
Order By	Toggle: True/False True: Sort column and sort order drop down are visible and are required to form order by clause. False: Sort options invisible

Limitations of Create or Alter Fact Table

• Collation specifications cannot be altered.
• Setting or unsetting an inline primary key changes the nullability of the column accordingly
• New columns can only be added to the end of the column list
• Columns cannot be renamed. If you attempt to rename a column, the column is dropped and a new column is added. When you rename a column in Coalesce mapping grid, ensure to move the same to the end of column list in mapping grid.
• A column's default value can only be set during its initial creation using a CREATE OR ALTER statement; re-running the statement with a different default value will result in an error and will not update/alter/drop the existing default or add a new default.

Create Or Alter Fact Table Deployment

Create Or Alter Fact Table Initial Deployment

When deployed for the first time into an environment the Create or Alter table node of materialization type table or transient table will execute the below stage:

Stage	Description
Create/Alter table/transient table	This will execute a CREATE OR ALTER statement and create a table/transient table in the target environment

Create Or Alter Fact Table Redeployment

Altering the Tables and Transient Tables

When redeployed with change in target location or change in node name, results in alter of the table

Stage	Description
Rename/Move Table	Alter table statement is executed to perform the alter operation

Changing Materialization Type

Change	Stages Executed
Table to transient table or vice versa	Drop table/transient table Create or Alter table/transient table

Recreating the Create Or Alter Table

When the Create or Alter table node is redeployed with any changes in table or config changes result in re-creating table

Stage	Description
Create/Alter table/transient table	This will execute a CREATE OR ALTER statement and create a table in the target environment

Redeployment with no changes

If the nodes are redeployed with no changes compared to previous deployment, then no stages are executed

Create Or Alter Tables Undeployment

If a Create or Alter table node of materialization type table/transient table are deleted from a Workspace, that Workspace is committed to Git and that commit deployed to a higher level environment then the table in the target environment will be dropped.

This is executed in below stage:

Stage	Description
Drop table/transient table	Removes the table from the environment

---

Create or Alter Persistent Stage

The Create or alter creates Persistent Stage table if it doesn’t exist, or alters it according to the table definition.

Create or Alter Persistent Stage Node

Create Or Alter has two configuration groups:

• Node Properties
• Create Table Options
• Insert Data Options

Create or Alter Persistent Stage Node Properties

Property	Description
Storage Location	(Required) Storage Location where the Create Or Alter Persistent Stage Table will be created
Node Type	(Required) Name of template used to create node objects
Description	A description of the node's purpose
Deploy Enabled	If TRUE the node will be deployed/redeployed when changes are detected If FALSE the node will not be deployed or will be dropped during redeployment

Create Table Options

Options	Description
Create As	Choose 'table' or 'transient table'
Cluster key	True/False toggle for clustering True: Specify clustering column and optional expressions False: No clustering
Change Tracking	Toggle to enable or disable change tracking on the table.
Enable Schema Evolution	Toggle to enable or disable schema evolution.
Inline Constraints	Toggle to enable inline constraints True: Specify column name and constraint specification False: No constraints
Out-Of-Line Constraints	Toggle to enable or disable out-of-line constraints When enabled, you can define both primary and foreign keys.
Data Retention Time	Set the number of days for data retention for Time Travel actions. Available only for materialization type - table
Maximum Data Extension time	Set the number of days for max data extension for Historical data access. Available only for materialization type - table
Default DDL Collation	Set the default collation specification for the DDL operations.

Insert Data Options

Options	Description
Multi Source	Toggle: True/False Implementation of SQL UNIONs True: Combine multiple sources in a single node True Options: - UNION: Combines with duplicate elimination - UNION ALL: Combines without duplicate elimination False: Single source node or multiple sources combined using a join.
Truncate Before	Toggle: True/False This determines whether a table will be overwritten each time a task executes. True: Uses INSERT OVERWRITE False: Uses INSERT to append data
Enable tests	Toggle: True/False Determines if tests are enabled
Business key	Required column for both Type 1 and Type 2. Note: Geometry and Geography data type columns are not supported as business key columns.
Change tracking	Required column for Type 2. If not chosen, treated as type 1
Distinct	Toggle: True/False True: Group by All is invisible. DISTINCT data is chosen for processing. False: Group by All is visible.
Group by All	Toggle: True/False True: DISTINCT is invisible Data grouped by all columns False: DISTINCT is visible
Order By	Toggle: True/False True: Sort column and sort order drop down are visible and are required to form order by clause. False: Sort options invisible

Limitations of Create or Alter Persistent Stage Table

• Collation specifications cannot be altered.
• Setting or unsetting an inline primary key changes the nullability of the column accordingly
• New columns can only be added to the end of the column list
• Columns cannot be renamed. If you attempt to rename a column, the column is dropped and a new column is added. When you rename a column in Coalesce mapping grid, ensure to move the same to the end of column list in mapping grid.
• A column's default value can only be set during its initial creation using a CREATE OR ALTER statement; re-running the statement with a different default value will result in an error and will not update/alter/drop the existing default or add a new default.

Create Or Alter Persistent Stage Table Deployment

Create Or Alter Persistent Stage Table Initial Deployment

When deployed for the first time into an environment the Create or Alter table node of materialization type table or transient table will execute the below stage:

Stage	Description
Create/Alter table/transient table	This will execute a CREATE OR ALTER statement and create a table/transient table in the target environment

Create Or Alter Persistent Stage Table Redeployment

Altering the Tables and Transient Tables

When redeployed with change in target location or change in node name, results in alter of the table

Stage	Description
Rename/Move Table	Alter table statement is executed to perform the alter operation

Changing Materialization Type

Change	Stages Executed
Table to transient table or vice versa	Drop table/transient table Create or Alter table/transient table

Recreating the Create Or Alter Table

When the Create or Alter table node is redeployed with any changes in table or config changes result in re-creating table

Stage	Description
Create/Alter table/transient table	This will execute a CREATE OR ALTER statement and create a table in the target environment

Redeployment with no changes

If the nodes are redeployed with no changes compared to previous deployment, then no stages are executed

Create Or Alter Tables Undeployment

If a Create or Alter table node of materialization type table/transient table are deleted from a Workspace, that Workspace is committed to Git and that commit deployed to a higher level environment then the table in the target environment will be dropped.

This is executed in below stage:

Stage	Description
Drop table/transient table	Removes the table from the environment

---

Create Or Alter Task

The Create or Alter Task creates task if it doesn’t exist, or alters it according to the task definition.

Create or Alter Task Node

Create Or Alter Task node has two or three configuration groups depending on config options selected:

• Node Properties
• Create Table Options
• Insert Data Options
• Scheduling Options

Create or Alter Task Node Properties

Property	Description
Storage Location	(Required) Storage Location where the Create Or Alter Task will be created
Node Type	(Required) Name of template used to create node objects
Description	A description of the node's purpose
Deploy Enabled	If TRUE the node will be deployed/redeployed when changes are detected If FALSE the node will not be deployed or will be dropped during redeployment

Create Table Options

Options	Description
Cluster key	True/False toggle for clustering True: Specify clustering column and optional expressions False: No clustering
Change Tracking	Toggle to enable or disable change tracking on the table.
Enable Schema Evolution	Toggle to enable or disable schema evolution.
Inline Constraints	Toggle to enable inline constraints True: Specify column name and constraint specification False: No constraints
Out-Of-Line Constraints	Toggle to enable or disable out-of-line constraints When enabled, you can define both primary and foreign keys.
Data Retention Time	Set the number of days for data retention for Time Travel actions. Available only for materialization type - table
Maximum Data Extension time	Set the number of days for max data extension for Historical data access. Available only for materialization type - table
Default DDL Collation	Set the default collation specification for the DDL operations.

Insert Data Options

Options	Description
Development Mode	True / False toggle that determines whether a task will be created or if the SQL to be used in the task will execute as DML as a Run action. True - A table will be created and SQL will execute as a Run action False - After testing the SQL as a Run action, setting to false will wrap SQL in a task with specified Scheduling Options
Multi Source	Toggle: True/False Implementation of SQL UNIONs True: Combine multiple sources in a single node True Options: - UNION: Combines with duplicate elimination - UNION ALL: Combines without duplicate elimination False: Single source node or multiple sources combined using a join.
Truncate Before	Toggle: True/False This determines whether a table will be overwritten each time a task executes. True: Uses INSERT OVERWRITE False: Uses INSERT to append data
Distinct	Toggle: True/False True: Group by All is invisible. DISTINCT data is chosen for processing. False: Group by All is visible.
Group by All	Toggle: True/False True: DISTINCT is invisible Data grouped by all columns False: DISTINCT is visible
Order By	Toggle: True/False True: Sort column and sort order drop down are visible and are required to form order by clause. False: Sort options invisible

Task Scheduling Options

Option	Description
Scheduling Mode	Choose compute type: - Warehouse Task: User managed warehouse executes tasks - Serverless Task: Uses serverless compute
When Source Stream has Data Flag	True/False toggle to check for stream data True - Only run task if source stream has capture change data False - Run task on schedule regardless of whether the source stream has data. If the source is not a stream should set this to false.
Multiple Stream has Data Logic	AND/OR logic when multiple streams (visible if Stream has Data Flag is true) AND - If there are multiple streams task will run if all streams have data OR - If there are multiple streams task will run if one or more streams has data
Select Warehouse	Visible if Scheduling Mode is set to Warehouse Task. Enter the name of the warehouse you want the task to run on without quotes.
Select initial serverless size	Visible when Scheduling Mode is set to Serverless Task. Select the initial compute size on which to run the task. Snowflake will adjust size from there based on target schedule and task run times.
Task Schedule	Choose schedule type: - Minutes - Specify interval in minutes. Enter a whole number from 1 to 11520 which represents the number of minutes between task runs. - Cron - Uses Cron expressions. Specifies a cron expression and time zone for periodically running the task. Supports a subset of standard cron utility syntax. - Predecessor - Specify dependent tasks
Enter predecessor tasks separated by a comma	Visible when Task Schedule is set to Predecessor. One or more task names that precede the task being created in the current node. Task names are case sensitive, should not be quoted and must exist in the same schema in which the current task is being created. If there are multiple predecessor task separate the task names using a comma and no spaces.
Root task name	Visible when Task Schedule is set to Predecessor. Name of the root task that controls scheduling for the DAG of tasks. Task names are case sensitive, should not be quoted and must exist in the same schema in which the current task is being created. If there are multiple predecessor task separate the task names using a comma and no spaces.
User Task Timeout	Specifies the time limit on a single run of the task before it times out (in milliseconds) Values: 0 - 604800000 (7 days). A value of 0 specifies that the maximum timeout value is enforced

Create or Alter Task Deployment

Create or Alter Task Deployment Parameters

The Create or Alter Task includes an environment parameter that allows you to specify a different warehouse used to run a task in different environments.

The parameter name is targetTaskWarehouse and the default value is DEV ENVIRONMENT.

When set to DEV ENVIRONMENT the value entered in the Scheduling Options config Select Warehouse on which to run the task will be used when creating the task.

{
    "targetTaskWarehouse": "DEV ENVIRONMENT"
}

When set to any value other than DEV ENVIRONMENT the node will attempt to create the task using a Snowflake warehouse with the specified value.

For example, with the below setting for the parameter in a QA environment, the task will execute using a warehouse named compute_wh.

{
    "targetTaskWarehouse": "compute_wh"
}

Create or Alter Task Initial Deployment

When deployed for the first time into an environment the Create or Alter Task node will execute the following stages:

For tasks without predecessors:

Stage	Description
Create Target Table	Creates table that will be loaded by the task
Create Task	Creates task that will load the target table on schedule
Resume Task	Resumes the task so it runs on schedule

For tasks with predecessors:

Stage	Description
Create Target Table	Creates table that will be loaded by the task
Suspend Root Task	Suspends root task for DAG modification
Create Task	Creates task that will load the target table on schedule

If a task is part of a DAG of tasks, the DAG needs to include a node type called "Task DAG Resume Root." This node will resume the root node once all the dependent tasks have been created as part of a deployment.

Create or Alter Task Redeployment

After initial deployment, changes in task schedule, warehouse, or scheduling options will result in a SUSPEND, CREATE or ALTER TASK, RESUME

For tasks without predecessors:

Stage	Description
Suspend Task	Suspend task
Create Task	Create Or Alter task with new schedule
Resume Task	Resumes task with new schedule

For tasks with predecessors:

Stage	Description
Suspend Root Task	Suspends root task for DAG modification
Create Task	Create Or Alter task with new schedule

Create or Alter Task Altering Tables

Subsequent deployments with changes in table like add or drop column and change in data type will result in an ALTER table statement followed by CREATE OR ALTER TASK AND RESUME TASK statements being issued.

Stage	Description
Change Column Attributes/Delete Column/Add Column/Change table description	Create or Alter table statement is executed to perform the alter operation.
Suspend Task	Suspend task
Create Task	Create Or Alter task with new schedule
Resume Task	Resumes task with new schedule

Create or Alter Task Undeployment

If a Create or Alter Task node is deleted from a Workspace, that Workspace is committed to Git and that commit deployed to a higher level environment then all objects created by the node in the target environment will be dropped.

For tasks without predecessors:

Stage	Description
Drop Table	Drop the table originally created to be loaded by the task.
Drop Current Task	Drop the task

For tasks with predecessors:

Stage	Description
Drop Table	Drop the table
Suspend Root Task	Root task needs to be put into a suspended state.
Drop Task	Drops the task

If a task is part of a DAG of tasks the DAG needs to include a node type called Task Dag Resume Root. This node will resume the root node once all the dependent tasks have been created as part of a deployment.

Limitations of Create or Alter Task

• Collation specifications cannot be altered.
• Setting or unsetting an inline primary key changes the nullability of the column accordingly
• New columns can only be added to the end of the column list
• Columns cannot be renamed. If you attempt to rename a column, the column is dropped and a new column is added. When you rename a column in Coalesce mapping grid, ensure to move the same to the end of column list in mapping grid.
• A column's default value can only be set during its initial creation using a CREATE OR ALTER statement; re-running the statement with a different default value will result in an error and will not update/alter/drop the existing default or add a new default.
• All Task nodes, predecessor and root should be present in same schema.
• Renaming a task isn’t supported. Instead it drops old task and recreates the task with new name and schedule specified.

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Create Or Alter DAG Root Task

The Coalesce Create Or Alter DAG Root Task UDN is a node that helps to create/alter a standalone root task.

The root task should have a defined schedule that initiates a run of the DAG. Each of the other tasks has at least one defined predecessor to link the tasks in the DAG. A child task runs only after all of its predecessor tasks run successfully to completion.

Tasks can also be used independently to generate periodic reports by inserting or merging rows into a report table or perform other periodic work.

More information about Tasks can be found in Snowflake's Introduction to tasks.

Create Or Alter DAG Root Task Node Configuration

The Create Or Alter DAG Root Task node has two configuration groups:

• Node Properties
• Scheduling Options

Create Or Alter DAG Root Task Node Properties

Property	Description
Storage Location	Storage Location where the Stream will be created
Node Type	Name of template used to create node objects
Description	A description of the node's purpose
Deploy Enabled	If TRUE the node will be deployed / redeployed when changes are detected If FALSE the node will not be deployed or will be dropped during redeployment

Create Or Alter DAG Root Task Scheduling Options

Option	Description
Scheduling Mode	Choose compute type: - Warehouse Task - User managed warehouse executes tasks - Serverless Task - Uses serverless compute
Select Warehouse	Visible if Scheduling Mode is set to Warehouse Task. Name of warehouse to run task on without quotes
Select initial serverless size	Visible when Scheduling Mode is set to Serverless Task Initial compute size for serverless tasks. Snowflake will adjust size from there based on target schedule and task run times.
Task Schedule	Choose schedule type: - Minutes - Specify interval in minutes - Cron - Use cron expression
Enter root task SQL	The SQL statement to be run when a standalone root task executes
User Task Timeout	Specifies the time limit on a single run of the task before it times out (in milliseconds) Values: 0 - 604800000 (7 days). A value of 0 specifies that the maximum timeout value is enforced

Create Or Alter DAG Root Task Deployment

Create Or Alter DAG Root Task Deployment Parameters

The parameter name is targetTaskWarehouse and the default value is DEV ENVIRONMENT.

When set to DEV ENVIRONMENT the value entered in the Scheduling Options config Select Warehouse on which to run task will be used when creating the task.

{
    "targetTaskWarehouse": "DEV ENVIRONMENT"
}

When set to any value other than DEV ENVIRONMENT the node will attempt to create the task using a Snowflake warehouse with the specified value.

For example, with the below setting for the parameter in a QA environment, the task will execute using a warehouse named compute_wh.

{
    "targetTaskWarehouse": "compute_wh"
}

Create Or Alter DAG Root Task Initial Deployment

When deployed for the first time into an environment, the following stages execute:

Stage	Description
Create Root Task	Creates task that will execute Root SQL on schedule

If a task is part of a DAG of tasks, the DAG needs to include a node type called Create DAG Root Resume Task. This node will resume the root node once all the dependent tasks have been created as part of a deployment.

Create Or Alter DAG Root Task Redeployment

After the Task has deployed for the first time into a target environment, subsequent deployments will execute two stages:

Stage	Description
Suspend Root Task	Suspends root task
Create Root Task	Recreates root task

Create Or Alter DAG Root Task Undeployment

When a Create Or Alter DAG Root Task node is deleted, two stages are executed:

Stage	Description
Suspend Root task	Suspends root task
Drop current task	Removes the task

---

Create DAG Root Resume Task

The Coalesce Create DAG Root Resume Task UDN is a node type that helps to resume the root task and its dependents or child tasks. Recursively resumes all dependent tasks tied to a specified root task in a DAG using the root task name specified.

The root task should have a defined schedule that initiates a run of the DAG. Each of the other tasks has at least one defined predecessor to link the tasks in the DAG. A child task runs only after all of its predecessor tasks run successfully to completion.

Tasks can also be used independently to generate periodic reports by inserting or merging rows into a report table or perform other periodic work.

More information about Tasks can be found in Snowflake's Introduction to tasks.

Create DAG Root Resume Task Node Configuration

The Task DAG Resume Root node has two configuration groups:

• Node Properties
• Scheduling Options

Create DAG Root Resume Task Node Properties

Property	Description
Storage Location	Storage Location where the Stream will be created
Node Type	Name of template used to create node objects
Description	A description of the node's purpose
Deploy Enabled	If TRUE the node will be deployed / redeployed when changes are detected If FALSE the node will not be deployed or will be dropped during redeployment

Create DAG Root Resume Task Scheduling Options

Option	Description
Enter root task name	Name of the root task to be resumed - recursively resumes all dependent tasks tied to this specified root task

Create DAG Root Resume Task Deployment

Create DAG Root Resume Task Initial Deployment

When deployed for the first time into an environment the following stage executes:

Stage	Description
Try Enable Root Task	Resumes root task and all its dependents

Create DAG Root Resume Task Undeployment

Stage	Description
Metadata Updates	Metadata Updates

---

Code

Create or Alter table Code

Component	Link
Node definition	definition.yml
Create Template	create.sql.j2
Run Template	run.sql.j2

Create or Alter view Code

Component	Link
Node definition	definition.yml
Create Template	create.sql.j2
Run Template	run.sql.j2

Create or Alter Dimension Code

Component	Link
Node definition	definition.yml
Create Template	create.sql.j2
Run Template	run.sql.j2

Create or Alter Fact Code

Component	Link
Node definition	definition.yml
Create Template	create.sql.j2
Run Template	run.sql.j2

Create or Alter Persistent Stage Code

Component	Link
Node definition	definition.yml
Create Template	create.sql.j2
Run Template	run.sql.j2

Create or Alter Task

Component	Link
Node definition	definition.yml
Create Template	create.sql.j2
Run Template	run.sql.j2

Create Or Alter DAG Root Task

Component	Link
Node definition	definition.yml
Create Template	create.sql.j2

Create DAG Root Resume Task

Component	Link
Node definition	definition.yml
Create Template	create.sql.j2

Versions

Available versions of the package.

Version #	Release Date	Notes
1.2.0	August 11, 2025	Added 3 new node types - Create or Alter Task, DAG Root and Resume Task
1.1.0	July 30, 2025	3 New Node types Added
1.0.1	March 04, 2025	Redeployment fixes for Create package
1.0.0	January 28, 2025	Create or Alter table, Create or Alter view node types added