Customer’ because it is not supported operation on system-versioned temporal tables.From the above result we can see that when SYSTEM-VERSIONING is ON we can’t drop a Temporal table Disabling System Versioning We can disable system versioning by executing the following statement: After executing the above statement the System Versioning is disabled and Temporal and History table will become like any other regular table as shown in the following image: Now try to update the Period columns in the dbo.
History table can’t have constraints like : Primary key, foreign key, table or column constraints.Properties like Period definition, Identity definition, Indexes, Statistics, Check Constraints, Triggers, Permission, Partitioning Configuration is not replicated from the temporal/current table to the history table when it is created.Customer table RESULT Msg 13537, Level 16, State 1, Line 19 Cannot update GENERATED ALWAYS columns in table ‘Sqlhints Temporal Demo From the above result it is clear that even after disabling the SYSTEM_VERSIONING, we will not be able to update the PERIOD column values.To allow the PERIOD column value update we have to drop the PERIOD definition by executing the following statement --First disable the system versioning ALTER TABLE dbo.Add column to Temporal Table, Add Indexes to History Table, DDL Operations on History Table, DDL Operations on Temporal Table, Disabling System-Versioning, Drop Column from Temporal Table, Drop Temporal Table, Sql, Sql 2016, Sql Server 2016, System Versioned Table, System Versioned Temporal Table, Temporal Table, Updating Period Columns This is the fourth article in the series of articles on the Temporal Tables, below is the complete list of articles on System-Versioned Temporal Tables.
This article will cover DDL operations on the System-Versioned Temporal Table with extensive list of examples --Create demo database if it is not present IF DB_ID(' Sqlhints Temporal Demo DB') IS NULL BEGIN CREATE DATABASE Sqlhints Temporal Demo DB END GO USE Sqlhints Temporal Demo DB GO --Create System-Versioned Temporal Table CREATE TABLE dbo. For best performance, we recommend that data be inserted or updated in chunk sizes that are multiples of 8040 bytes. For example, a partial update of a varchar(max) column might delete or modify only the first 200 characters of the column, whereas a full update would delete or modify all the data in the column.The results of an UPDATE statement are undefined if the statement includes a FROM clause that is not specified in such a way that only one value is available for each column occurrence that is updated, that is, if the UPDATE statement is not deterministic. For example, in the UPDATE statement in the following script, both rows in Table1 meet the qualifications of the FROM clause in the UPDATE statement; but it is undefined which row from Table1 is used to update the row in Table2. When you update a FILESTREAM field, you modify the underlying BLOB data in the file system. Table1 (Col A int NOT NULL, Col B decimal(10,3) NOT NULL); GO CREATE TABLE dbo. @Offset and @Length are specified in bytes for varbinary and varchar data types and in characters for the nvarchar data type.Customer ( Id INT NOT NULL PRIMARY KEY CLUSTERED, Name NVARCHAR(100) NOT NULL, Start Time DATETIME2 GENERATED ALWAYS AS ROW START HIDDEN NOT NULL, End Time DATETIME2 GENERATED ALWAYS AS ROW END HIDDEN NOT NULL, PERIOD FOR SYSTEM_TIME (Start Time, End Time) ) WITH(SYSTEM_VERSIONING= ON (HISTORY_TABLE=dbo.