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51 lines
2.7 KiB
Transact-SQL
51 lines
2.7 KiB
Transact-SQL
-- =========================================
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-- Create system-versioned temporal table template
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-- Use the Specify Values for Template Parameters command (Ctrl-Shift-M) to fill in the parameter values below.
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--
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-- This template creates a system-versioned temporal table.
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--
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-- For more details on system-versioned temporal tables please refer to MSDN documentation:
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-- https://msdn.microsoft.com/en-IN/library/dn935015.aspx#Anchor_0
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--
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-- To learn more how to use system-versioned tables in your applications, take a look at "Getting Started with System-Versioned Temporal Tables":
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-- https://msdn.microsoft.com/en-US/library/mt604462.aspx
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-- =========================================
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BEGIN
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--If table is system-versioned, SYSTEM_VERSIONING must be set to OFF first
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IF ((SELECT temporal_type FROM SYS.TABLES WHERE object_id = OBJECT_ID('<schema_name, sysname, dbo>.<temporal_table_name, sysname, sample_table>', 'U')) = 2)
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BEGIN
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ALTER TABLE [<schema_name, sysname, dbo>].[<temporal_table_name, sysname, sample_table>] SET (SYSTEM_VERSIONING = OFF)
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END
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DROP TABLE IF EXISTS [<schema_name, sysname, dbo>].[<temporal_table_name, sysname, sample_table>]
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END
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GO
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--Create system-versioned temporal table. It must have primary key and two datetime2 columns that are part of SYSTEM_TIME period definition
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CREATE TABLE [<schema_name, sysname, dbo>].[<temporal_table_name, sysname, sample_table>]
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(
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<columns_in_primary_key, , c1> <column1_datatype, , int> <column1_nullability,, NOT NULL>,
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<column2_name, sysname, c2> <column2_datatype, , char(10)> <column2_nullability,, NULL>,
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<column3_name, sysname, c3> <column3_datatype, , datetime> <column3_nullability,, NULL>,
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--Period columns and PERIOD FOR SYSTEM_TIME definition
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<period_start_column_name, sysname, SysStartTime> datetime2(7) GENERATED ALWAYS AS ROW START <period_start_column_hidden,,> NOT NULL ,
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<period_end_column_name, sysname, SysEndTime> datetime2(7) GENERATED ALWAYS AS ROW END <period_end_column_hidden,,> NOT NULL ,
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PERIOD FOR SYSTEM_TIME(<period_start_column_name, sysname, SysStartTime>,<period_end_column_name, sysname, SysEndTime>),
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--Primary key definition
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CONSTRAINT <constraint_name, sysname, PK_sampletable> PRIMARY KEY (<columns_in_primary_key, , c1>)
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)
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WITH
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(
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--Set SYSTEM_VERSIONING to ON and provide reference to HISTORY_TABLE.
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SYSTEM_VERSIONING = ON
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(
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--If HISTORY_TABLE does not exists, default table will be created.
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HISTORY_TABLE = [<history_table_schema_name, sysname, dbo>].[<history_table_name, sysname, sample_table_history>],
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--Specifies whether data consistency check will be performed across current and history tables (default is ON)
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DATA_CONSISTENCY_CHECK = <data_consistency_check,, ON>
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)
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)
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GO
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