24 lines
1.4 KiB
MySQL
24 lines
1.4 KiB
MySQL
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-- diagnotsic des index a créer
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--!!!!!!!!!!!!!!!!!!!!!!!!! ATTENTION : ne pas utiliser si moins de 30 jours de fonctionnement CONTINU du SGBDR
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SELECT sqlserver_start_time FROM sys.dm_os_sys_info
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-- 2 moyens
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-- 1) grossier : je prend le top n des index qui me font ganger le MAX
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SELECT TOP (SELECT COUNT(*) / 3 FROM [dbo].[sys_dm_db_missing_index_details])
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statement, equality_columns, inequality_columns, included_columns
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FROM [dbo].[sys_dm_db_missing_index_details] AS mid
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JOIN [dbo].[sys_dm_db_missing_index_groups] AS mig ON mid.index_handle = mig.index_handle
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JOIN [dbo].[sys_dm_db_missing_index_group_stats] AS mis ON mig.index_group_handle = mis.group_handle
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ORDER BY statement, equality_columns, inequality_columns, included_columns
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-- 2) analyse des pertinence des index à créer...
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SELECT statement, equality_columns, inequality_columns, included_columns
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FROM [dbo].[sys_dm_db_missing_index_details] AS mid
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ORDER BY statement, COALESCE(equality_columns+ ', ' + inequality_columns, equality_columns, inequality_columns)
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CREATE INDEX XYZ ON [Anthadine_prod].[dbo].[C_C_CSTPAT] ([CSTTYP_CODE], [INDI_CODE] [CSTPAT_DATE], [CSTPAT_ESTREF])
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INCLUDE ([CSTPAT_CODE], [UTIL_INDI_CODE], [CSTPAT_HEURE], [IDENT], [CSTPAT_TEXTE], [CSTPAT_VALE], [CSTPAT_ESTREF], [TRACE_INS_INDI_CODE], [TRACE_UPD_INDI_CODE], [TRACE_INS_DATE], [TRACE_UPD_DATE], [TRACE_FLAG_DELETE], [EFEV_CODE])
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