the missing hyphen in the folder name was bothering me...
This commit is contained in:
Thierry Schork
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/*
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Server: ssunb008vm01.sunstore.ch
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Format: GCM
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Business: TPPHAR
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type: DEVE
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Version: 23.1.10016.00066
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01.11.2022, TSC
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*/
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USE Arizona;
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BEGIN TRANSACTION;
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SET XACT_ABORT ON;
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SET NOCOUNT ON;
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IF OBJECT_ID('tempdb..#chkRes') IS NOT NULL BEGIN;
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DROP TABLE #chkRes;
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END
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DECLARE @ref_schema VARCHAR(50) = 'dbo';
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DECLARE @ref_table VARCHAR(100) = 'entry';
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CREATE TABLE #chkRes (
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tbl_name NVARCHAR(128) NOT NULL
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,[schema_name] VARCHAR(50) NOT NULL
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,[type] CHAR(2) NULL
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,index_name NVARCHAR(128) NULL
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,[index_id] INT NOT NULL
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,[Reads] BIGINT NOT NULL
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,[Writes] BIGINT NOT NULL
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,[delta] BIGINT NOT NULL
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,[index_type] NVARCHAR(60) NULL
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,[FillFactor] TINYINT NULL
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,[has_filter] BIT NOT NULL
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,[filter_definition] NVARCHAR(MAX) NULL
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,[last_user_scan] DATETIME NULL
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,[last_user_lookup] DATETIME NULL
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,[last_user_seek] DATETIME NULL
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,[IndexColumns] NVARCHAR(MAX) NULL
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,[IncludedColumns] NVARCHAR(MAX) NULL
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,[primary_table] NVARCHAR(500) NULL
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,[pk_column_name] NVARCHAR(128) NULL
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,[fk_constraint_name] NVARCHAR(128) NULL
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,comp_drop_cmd AS 'DROP INDEX ' + index_name + ' ON ' + [schema_name] + '.' + tbl_name + ';'
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);
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;WITH ColInfo
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AS (
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SELECT
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o.name AS TblName
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,s.name + '.' + o.name AS SchemaTbl
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,i.name AS IndexName
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,i.is_primary_key AS IsPrimaryKey
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,i.is_unique_constraint AS IsUniqueConstraint
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,i.is_unique AS IsUnique
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,c.name AS ColName
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,c.is_computed AS IsComputedCol
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,ic.is_included_column AS IsIncludedCol
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,ic.key_ordinal
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,i.filter_definition AS FilterDefinition
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FROM sys.objects o
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INNER JOIN sys.schemas s
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ON o.schema_id = s.schema_id
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INNER JOIN sys.columns c
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ON o.object_id = c.object_id
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INNER JOIN sys.indexes i
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ON c.object_id = i.object_id
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INNER JOIN sys.index_columns ic
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ON i.index_id = ic.index_id
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AND o.object_id = ic.object_id
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AND c.column_id = ic.column_id
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)
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--- Index Read/Write stats (all tables in current DB) ordered by Reads (Query 62) (Overall Index Usage - Reads)
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INSERT INTO #chkRes (
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tbl_name
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,[schema_name]
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,[type]
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,index_name
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,index_id
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,Reads
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,Writes
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,delta
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,index_type
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,[FillFactor]
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,has_filter
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,filter_definition
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,last_user_scan
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,last_user_lookup
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,last_user_seek
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,IndexColumns
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,IncludedColumns
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,primary_table
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,pk_column_name
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,fk_constraint_name
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)
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SELECT
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o.name AS [tbl_Name]
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,SCHEMA_NAME(o.schema_id) AS [schema_name]
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,o.type
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,i.name AS [index_name]
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,i.index_id
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,user_seeks + user_scans + user_lookups AS [Reads]
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,s.user_updates AS [Writes]
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,CASE
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WHEN s.user_updates > user_seeks + user_scans + user_lookups THEN
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s.user_updates - (user_seeks + user_scans + user_lookups)
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ELSE (user_seeks + user_scans + user_lookups) - s.user_updates
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END AS delta
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,i.type_desc AS [index_type]
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,i.fill_factor AS [fill_factor]
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,i.has_filter
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,i.filter_definition
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,s.last_user_scan
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,s.last_user_lookup
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,s.last_user_seek
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,idx_cols.IndexColumns
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,idx_cols.IncludedColumns
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,fk.primary_table
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,fk.pk_column_name
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,fk.fk_constraint_name
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FROM sys.dm_db_index_usage_stats AS s WITH (NOLOCK)
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INNER JOIN sys.indexes AS i WITH (NOLOCK)
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ON s.object_id = i.object_id
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INNER JOIN sys.objects o WITH (NOLOCK)
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ON s.object_id = o.object_id
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OUTER APPLY (
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SELECT DISTINCT
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x.TblName
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,x.IndexName
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,x.IsPrimaryKey
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,x.IsUniqueConstraint
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,x.IsUnique
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--,size.IndexSizeKB
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,c.IndexColumns
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,ci.IncludedColumns
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,cc.ComputedColumns
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,x.FilterDefinition
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FROM ColInfo x
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CROSS APPLY (
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SELECT STUFF(sq.strXML, 1, 2, '') AS IndexColumns
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FROM (
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SELECT ', ' + ISNULL(x2.ColName, '')
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FROM ColInfo x2
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WHERE x.TblName = x2.TblName
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AND x.IndexName = x2.IndexName
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AND x2.IsIncludedCol = 0
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ORDER BY x2.key_ordinal
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FOR XML PATH('')
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) sq(strXML)
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) c
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OUTER APPLY (
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SELECT STUFF(sq.strXML, 1, 2, '') AS IncludedColumns
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FROM (
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SELECT ', ' + ISNULL(x2.ColName, '')
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FROM ColInfo x2
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WHERE x.TblName = x2.TblName
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AND x.IndexName = x2.IndexName
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AND x2.IsIncludedCol = 1
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ORDER BY x2.key_ordinal
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FOR XML PATH('')
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) sq(strXML)
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) ci
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OUTER APPLY (
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SELECT STUFF(sq.strXML, 1, 2, '') AS ComputedColumns
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FROM (
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SELECT ', ' + ISNULL(x2.ColName, '')
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FROM ColInfo x2
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WHERE x.TblName = x2.TblName
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AND x.IndexName = x2.IndexName
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AND x2.IsComputedCol = 1
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ORDER BY x2.key_ordinal
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FOR XML PATH('')
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) sq(strXML)
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) cc
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WHERE x.TblName = o.name
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AND x.IndexName = i.name
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) idx_cols
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LEFT OUTER JOIN (
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SELECT
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SCHEMA_NAME(tab.schema_id) + '.' + tab.name AS [table]
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,col.column_id
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,col.name AS column_name
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,CASE
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WHEN fk.object_id IS NOT NULL THEN '>-'
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ELSE NULL
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END AS rel
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,SCHEMA_NAME(pk_tab.schema_id) + '.' + pk_tab.name AS primary_table
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,pk_col.name AS pk_column_name
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,fk_cols.constraint_column_id AS NO
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,fk.name AS fk_constraint_name
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,tab.name AS tbl_name
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FROM sys.tables tab
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INNER JOIN sys.columns col
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ON col.object_id = tab.object_id
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LEFT OUTER JOIN sys.foreign_key_columns fk_cols
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ON fk_cols.parent_object_id = tab.object_id
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AND fk_cols.parent_column_id = col.column_id
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LEFT OUTER JOIN sys.foreign_keys fk
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ON fk.object_id = fk_cols.constraint_object_id
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LEFT OUTER JOIN sys.tables pk_tab
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ON pk_tab.object_id = fk_cols.referenced_object_id
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LEFT OUTER JOIN sys.columns pk_col
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ON pk_col.column_id = fk_cols.referenced_column_id
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AND pk_col.object_id = fk_cols.referenced_object_id
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WHERE fk.object_id IS NOT NULL
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) fk
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ON fk.tbl_name = o.name
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AND idx_cols.IndexColumns LIKE '%' + fk.column_name + '%'
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WHERE o.type = 'U' -- user table
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AND i.index_id = s.index_id
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AND s.database_id = DB_ID()
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AND o.name = @ref_table
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AND SCHEMA_NAME(o.schema_id) = @ref_schema
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ORDER BY delta DESC
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--ORDER BY user_seeks + user_scans + user_lookups DESC -- Order by reads
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--ORDER BY s.user_updates DESC OPTION -- Order by writes
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OPTION (RECOMPILE);
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/* list back data */
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SELECT cr.tbl_name
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,cr.[schema_name]
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,cr.[type]
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,cr.index_name
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,cr.index_id
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,cr.Reads
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,cr.Writes
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,cr.delta
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,cr.index_type
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,cr.[FillFactor]
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,cr.has_filter
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,cr.filter_definition
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,cr.last_user_scan
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,cr.last_user_lookup
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,cr.last_user_seek
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,cr.IndexColumns
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,cr.IncludedColumns
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,cr.primary_table
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,cr.pk_column_name
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,cr.fk_constraint_name
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FROM #chkRes cr
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ORDER BY IndexColumns
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;
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ROLLBACK TRANSACTION
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RETURN
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--/* Check if index with FK are in the list, alert if it's the case */
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--IF EXISTS(
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-- SELECT 1
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-- FROM #chkRes cr
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-- WHERE cr.Reads = 0 --not used
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-- AND cr.Writes > 100 --but maintained
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-- AND cr.fk_constraint_name IS NOT NULL --is part of a FK
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--) BEGIN
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-- SELECT
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-- 'This index is tied to a column part of a FK, check if dropping is to be done.' AS msg
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-- ,cr.[schema_name]
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-- ,cr.tbl_name
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-- ,cr.index_name
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-- ,cr.Reads
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-- ,cr.Writes
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-- ,cr.primary_table
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-- ,cr.pk_column_name
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-- ,cr.fk_constraint_name
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-- FROM #chkRes cr
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-- WHERE cr.Reads = 0 --not used
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-- AND cr.Writes > 100 --but maintained
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-- AND cr.fk_constraint_name IS NOT NULL --is part of a FK
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-- AND cr.index_type = 'NONCLUSTERED'
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--END
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--/* declare variables */
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--DECLARE
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-- @table_name VARCHAR(MAX)
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-- ,@schema_name VARCHAR(20)
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-- ,@index_name VARCHAR(500)
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-- ,@drop_cmd VARCHAR(MAX)
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-- ;
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--DECLARE dropIdx CURSOR LOCAL FORWARD_ONLY FAST_FORWARD READ_ONLY FOR
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-- SELECT
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-- cr.tbl_name
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-- ,cr.[schema_name]
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-- ,cr.index_name
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-- ,cr.comp_drop_cmd
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-- FROM #chkRes cr
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-- WHERE cr.Reads = 0 --not used on select
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-- AND cr.Writes > 100 --but maintained on insert / update
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-- AND cr.fk_constraint_name IS NULL --not part of a FK
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-- AND cr.index_type = 'NONCLUSTERED' --ignore clustered & heaps
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-- ;
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--OPEN dropIdx;
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--FETCH NEXT FROM dropIdx
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--INTO
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-- @table_name
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-- ,@schema_name
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-- ,@index_name
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-- ,@drop_cmd
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-- ;
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--WHILE @@FETCH_STATUS = 0 BEGIN
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-- PRINT @drop_cmd;--'Dropping index ' + @index_name + ' on ' + @schema_name + '.' + @table_name;
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-- --EXEC(@drop_cmd);
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-- FETCH NEXT FROM dropIdx
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-- INTO
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-- @table_name
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-- ,@schema_name
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-- ,@index_name
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-- ,@drop_cmd
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-- ;
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--END
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--CLOSE dropIdx;
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--DEALLOCATE dropIdx;
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--SELECT cr.tbl_name
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-- ,cr.[schema_name]
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-- ,cr.index_name
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-- ,cr.Reads
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-- ,cr.Writes
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-- ,cr.delta
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-- ,cr.index_type
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-- ,cr.last_user_scan
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-- ,cr.last_user_lookup
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-- ,cr.last_user_seek
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-- ,cr.IndexColumns
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-- ,cr.IncludedColumns
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-- ,cr.primary_table
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-- ,cr.pk_column_name
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-- ,cr.fk_constraint_name
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--FROM #chkRes cr
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--ORDER BY cr.delta DESC
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--;
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--ROLLBACK TRANSACTION;
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