试图查询确实的索引
CREATE VIEW [dbo].[vw_Index_MissingIndex] ASSELECT '[' + d.name + ']' as DBName,[dbo].[fn_Index_CreateIndexName](mid.equality_columns,mid.Inequality_columns,mid.index_handlE) AS ID,REPLACE(mid.equality_columns,',',' ASC,') AS equality_columns,REPLACE(mid.Inequality_columns,',',' ASC,') AS Inequality_columns,mid.Included_columns,mid.[statement]FROM sys.dm_db_missing_index_details as midINNER JOIN sys.databases don d.database_id = mid.database_idGO给索引命名
CREATE FUNCTION [dbo].[fn_Index_CreateIndexName] (@equality_columns NVARCHAR(4000), @Inequality_columns NVARCHAR(max), @index_handlE INT) RETURNS VARCHAR(max)ASBEGINdeclare @IndexName NVARCHAR(MAX)SET @IndexName = ISNULL(@equality_columns,@Inequality_columns)SET @IndexName = LTRIM(REPLACE(@IndexName,'[','_'))SET @IndexName = RTRIM(REPLACE(@IndexName,']','_'))SET @IndexName = REPLACE(@IndexName,',','')SET @IndexName = REPLACE(@IndexName,'_ _','_')IF LEN(@IndexName) > 120BEGINSET @IndexName = SUBSTRING(@IndexName,0,120)END SET @IndexName = @IndexName + CAST(@index_handlE AS NVARCHAR(15))RETURN @IndexName ENDGO创建索引语句,按查询表方式返回
/*注意@DBNAME 为[数据库名字]*/
create PROCEDURE [dbo].[usp_Index_MissingIndexCreationStatements](@DBNAME VARCHAR(100))ASDECLARE @IndexCreationPlaceholder_Start AS NVARCHAR(MAX)DECLARE @IndexCreationPlaceholder_End AS NVARCHAR(MAX)-- PREPARE PLACEHOLDERSET @IndexCreationPlaceholder_Start = 'IF NOT EXISTS (SELECT * FROM {2}.sys.indexes WHERE [name] = ''IX_{0}'' ) BEGINCREATE NONCLUSTERED INDEX [IX_{0}] ON {1}';SET @IndexCreationPlaceholder_End = ' WITH (PAD_INDEX = OFF,STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF,ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)ON [PRIMARY]END;' + char(13) + char(10)-- STATEMENT CREATIONSELECT DBName,CASEWHEN NOT mid.equality_columns IS NULL AND NOT mid.Inequality_columns IS NULL THENREPLACE(REPLACE(REPLACE(@IndexCreationPlaceholder_Start,'{0}', mid.ID),'{1}',mid.[statement]),'{2}',mid.DBName)+ '( ' + COALESCE(mid.equality_columns,'') + ' ASC,' + COALESCE(mid.Inequality_columns,'') + ' ASC )' +COALESCE('INCLUDE ( ' + mid.Included_columns + ' ) ','')+ @IndexCreationPlaceholder_EndWHEN mid.equality_columns IS NULL AND NOT mid.Inequality_columns IS NULL THENREPLACE(REPLACE(REPLACE(@IndexCreationPlaceholder_Start,'{0}', mid.ID),'{1}',mid.[statement]),'{2}',mid.DBName)+ ' ( ' + COALESCE(mid.Inequality_columns,'') + ' ASC ) ' +COALESCE('INCLUDE ( ' + mid.Included_columns + ' ) ','')+ @IndexCreationPlaceholder_EndWHEN NOT mid.equality_columns IS NULL AND mid.Inequality_columns IS NULL THENREPLACE(REPLACE(REPLACE(@IndexCreationPlaceholder_Start,'{0}', mid.ID),'{1}',mid.[statement]),'{2}',mid.DBName)+ ' ( ' + COALESCE(mid.equality_columns,'') + ' ASC) '+COALESCE('INCLUDE ( ' + mid.Included_columns + ' ) ','')+ @IndexCreationPlaceholder_EndELSE NULLEND AS Index_Creation_Statement,' DROP INDEX [IX_' + mid.ID + '] ON ' + mid.[statement] + char(13) + char(10) AS Index_Drop_Statement FROM [dbo].[vw_Index_MissingIndex] AS midWHERE DBName = @DBNAME GO创建索引，直接打印为日志，复制日志直接执行
create PROCEDURE [dbo].[usp_Index_MissingIndexCreationStatements_PRINT](@DBNAME VARCHAR(100))ASDECLARE @IndexCreationPlaceholder_Start AS NVARCHAR(MAX)DECLARE @IndexCreationPlaceholder_End AS NVARCHAR(MAX)-- PREPARE PLACEHOLDERSET @IndexCreationPlaceholder_Start = 'IF NOT EXISTS (SELECT * FROM {2}.sys.indexes WHERE [name] = ''IX_{0}'' ) BEGINCREATE NONCLUSTERED INDEX [IX_{0}] ON {1} ';SET @IndexCreationPlaceholder_End = ' WITH (PAD_INDEX = OFF,STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF,ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)ON [PRIMARY]END;' + char(13) + char(10)-- STATEMENT CREATIONdeclare @Index_Creation_Statement varchar(max)declare @Index_Drop_Statement varchar(max)SELECT CASEWHEN NOT mid.equality_columns IS NULL AND NOT mid.Inequality_columns IS NULL THENREPLACE(REPLACE(REPLACE(@IndexCreationPlaceholder_Start,'{0}', mid.ID),'{1}',mid.[statement]),'{2}',mid.DBName)+ '( ' + COALESCE(mid.equality_columns,'') + ' ASC,' + COALESCE(mid.Inequality_columns,'') + ' ASC ) ' + char(13) + char(10) + '' +COALESCE('INCLUDE ( ' + mid.Included_columns + ' ) ','')+ @IndexCreationPlaceholder_EndWHEN mid.equality_columns IS NULL AND NOT mid.Inequality_columns IS NULL THENREPLACE(REPLACE(REPLACE(@IndexCreationPlaceholder_Start,'{0}', mid.ID),'{1}',mid.[statement]),'{2}',mid.DBName)+ ' ( ' + COALESCE(mid.Inequality_columns,'') + ' ASC ) ' + COALESCE('INCLUDE ( ' + mid.Included_columns + ' ) ','')+ @IndexCreationPlaceholder_EndWHEN NOT mid.equality_columns IS NULL AND mid.Inequality_columns IS NULL THENREPLACE(REPLACE(REPLACE(@IndexCreationPlaceholder_Start,'{0}', mid.ID),'{1}',mid.[statement]),'{2}',mid.DBName)+ ' ( ' + COALESCE(mid.equality_columns,'') + ' ASC) '+COALESCE('INCLUDE ( ' + mid.Included_columns + ' ) ','')+ @IndexCreationPlaceholder_EndELSE NULLEND AS Index_Creation_Statement,' DROP INDEX [IX_' + mid.ID + '] ON ' + mid.[statement] + char(13) + char(10) AS Index_Drop_Statement INTO #TEST_INDEX_TMP FROM [dbo].[vw_Index_MissingIndex] AS midWHERE DBName = @DBNAMEDECLARE INDEX_CURSOR CURSOR FOR SELECT * FROM #TEST_INDEX_TMPOPEN INDEX_CURSORfetch NEXT FROM INDEX_CURSOR into @Index_Creation_Statement,@Index_Drop_Statementprint 'use' + @DBNAMEprint 'Go'while @@FETCH_STATUS = 0 beginprint @Index_Creation_Statementprint 'Go'fetch NEXT FROM INDEX_CURSOR into @Index_Creation_Statement,@Index_Drop_Statement;endclose INDEX_CURSORdeallocate INDEX_CURSORSELECT * FROM #TEST_INDEX_TMPTRUNCATE TABLE #TEST_INDEX_TMP;DROP TABLE #TEST_INDEX_TMP;GO执行
exec [usp_Index_MissingIndexCreationStatements_PRINT] '[TEST]'
