The code below does the following:1) Creates a database play_partition in C:\TEMP2) Creates two identical partitioned tables play_table and archive_play_table3) Switches play_table partition 1 to archive_play_table partition 14) Creates a new unpartitioned table temp_table with the same structure as play_table on the same filegroup as play_table partition 25) Switches play_table_partition 2 to temp_table6) Tries to switch temp_table back to play_table partition 2 and fails with[code="plain"]Msg 4982, Level 16, State 1, Line 64ALTER TABLE SWITCH statement failed. Check constraints of source table 'play_partition.dbo.temp_table' allow values that are not allowed byrange defined by partition 2 on target table'play_partition.dbo.play_table'.[/code]Why does it fail?I am using SQL Server 2014 (Enterprise Edition Trial).Regards,Colin Daleyhttp://www.colindaley.com/translator[code="sql"]/* Playing with partitioned tables */USE master;GODROP DATABASE play_partition;GOCREATE DATABASE play_partition ON PRIMARY( NAME = play_partition , FILENAME = 'C:\TEMP\play_partition.mdf') ,FILEGROUP play_fg1( NAME = play_fg1 ,FILENAME = 'C:\TEMP\play_fg1f1.ndf') ,FILEGROUP play_fg2( NAME = play_fg2f1 ,FILENAME = 'C:\TEMP\play_fg2f1.ndf');GOUSE play_partition;CREATE PARTITION FUNCTION play_range(INT) AS RANGE LEFT FOR VALUES(3);-- Partition schemeCREATE PARTITION SCHEME play_scheme AS PARTITION play_range TO (play_fg1, play_fg2);-- Partitioned tablesCREATE TABLE dbo.play_table( c1 INT NOT NULL CONSTRAINT PK_play_table_c1 PRIMARY KEY CLUSTERED) ON play_scheme(c1);CREATE TABLE dbo.archive_play_table( c1 INT NOT NULL CONSTRAINT PK_archive_play_table_c1 PRIMARY KEY CLUSTERED) ON play_scheme(c1);-- partition 1 = {1, 2, 3}, partiion 2 = {4, 5, 6}INSERT INTO dbo.play_table(c1) VALUES (1), (2), (3), (4), (5), (6);-- move partition 1 from play_table to archive play_tableALTER TABLE dbo.play_table SWITCH PARTITION 1 to dbo.archive_play_table PARTITION 1;-- create empty table with same structure as dbo.play_tableSELECT * INTO dbo.temp_table FROM dbo.play_table WHERE 1 = 0;-- move temp_table to filegroup play_fg2ALTER TABLE dbo.temp_table ADD CONSTRAINT PK_temp_table_c1 PRIMARY KEY CLUSTERED(c1) ON play_fg2;-- move contents of play_table to temp_table, which is not partitioned-- but is in the same filegroupALTER TABLE dbo.play_table SWITCH PARTITION 2 TO temp_table;PRINT 'Switched from partitioned table to non-partitioned table';-- move data back to partitioned play_table from unpartitioned temp_table-- FAILALTER TABLE dbo.temp_table SWITCH TO play_table partition 2;PRINT 'Switched from non-partitioned table to partitioned table';SELECT 'archive_play_table' as table_name, t1.c1 FROM dbo.archive_play_table AS t1 UNION ALL SELECT 'temp_table' AS table_name, t1.c1 FROM dbo.temp_table as t1 ORDER BY 1, 2;[/code]
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