我在想什麼最簡單的方式列出數據庫中所有表的所有索引是。列出所有索引
我應該爲每個表調用sp_helpindex
並將結果存儲在臨時表中,還是有更簡單的方法?
任何人都可以解釋爲什麼約束存儲在sysobjects但索引不是?
我在想什麼最簡單的方式列出數據庫中所有表的所有索引是。列出所有索引
我應該爲每個表調用sp_helpindex
並將結果存儲在臨時表中,還是有更簡單的方法?
任何人都可以解釋爲什麼約束存儲在sysobjects但索引不是?
你可以參考sysindexes
另一個竅門是看的的sp_helpindex文,看看它是如何從底層表重建的信息。
sp_helptext 'sp_helpindex'
我沒有這方面的參考,但我相信約束不存儲在sysobjects中,因爲它們是不同類型的東西; sysindexes包含有關sysobjects中對象的元數據。
如果您需要了解更多信息,這裏是一個很好的SQL腳本,這是我從時間使用時間:
DECLARE @TabName varchar(100)
CREATE TABLE #temp (
TabName varchar(200), IndexName varchar(200), IndexDescr varchar(200),
IndexKeys varchar(200), IndexSize int
)
DECLARE cur CURSOR FAST_FORWARD LOCAL FOR
SELECT name FROM sysobjects WHERE xtype = 'U'
OPEN cur
FETCH NEXT FROM cur INTO @TabName
WHILE @@FETCH_STATUS = 0
BEGIN
INSERT INTO #temp (IndexName, IndexDescr, IndexKeys)
EXEC sp_helpindex @TabName
UPDATE #temp SET TabName = @TabName WHERE TabName IS NULL
FETCH NEXT FROM cur INTO @TabName
END
CLOSE cur
DEALLOCATE cur
DECLARE @ValueCoef int
SELECT @ValueCoef = low FROM Master.dbo.spt_values WHERE number = 1 AND type = N'E'
UPDATE #temp SET IndexSize =
((CAST(sysindexes.used AS bigint) * @ValueCoef)/1024)/1024
FROM sysobjects INNER JOIN sysindexes ON sysobjects.id = sysindexes.id
INNER JOIN #temp T ON T.TabName = sysobjects.name AND T.IndexName = sysindexes.name
SELECT * FROM #temp
ORDER BY TabName, IndexName
DROP TABLE #temp
這裏有您需要的那種查詢的一個例子:
select
i.name as IndexName,
o.name as TableName,
ic.key_ordinal as ColumnOrder,
ic.is_included_column as IsIncluded,
co.[name] as ColumnName
from sys.indexes i
join sys.objects o on i.object_id = o.object_id
join sys.index_columns ic on ic.object_id = i.object_id
and ic.index_id = i.index_id
join sys.columns co on co.object_id = i.object_id
and co.column_id = ic.column_id
where i.[type] = 2
and i.is_unique = 0
and i.is_primary_key = 0
and o.[type] = 'U'
--and ic.is_included_column = 0
order by o.[name], i.[name], ic.is_included_column, ic.key_ordinal
;
這個有點特定於某種目的(我在一個小小的C#應用程序中使用它來查找重複索引並對輸出進行格式化,使其實際上可以被人類讀取)。但是你可以很容易地適應你的需求。
其他答案是特定於SQL Server,使用sysobjects或sys。*目錄視圖 - 您也可以參考ISO標準INFORMATION_SCHEMA視圖。
這些支持多個數據庫供應商,例如, SQL Server,MySQL,PostgreSQL等等。您最可能尋找的是:
SELECT * FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS
這將列出唯一的主鍵和外鍵約束 - 所有變成SQL Server上的索引。
+1兼容ANSI! – 2014-08-01 14:48:30
這是一個腳本,它將返回SQL語句以重新創建數據庫中的所有索引。
SELECT ' CREATE ' +
CASE
WHEN I.is_unique = 1 THEN ' UNIQUE '
ELSE ''
END +
I.type_desc COLLATE DATABASE_DEFAULT + ' INDEX ' +
I.name + ' ON ' +
SCHEMA_NAME(T.schema_id) + '.' + T.name + ' (' +
KeyColumns + ') ' +
ISNULL(' INCLUDE (' + IncludedColumns + ') ', '') +
ISNULL(' WHERE ' + I.filter_definition, '') + ' WITH (' +
CASE
WHEN I.is_padded = 1 THEN ' PAD_INDEX = ON '
ELSE ' PAD_INDEX = OFF '
END + ',' +
'FILLFACTOR = ' + CONVERT(
CHAR(5),
CASE
WHEN I.fill_factor = 0 THEN 100
ELSE I.fill_factor
END
) + ',' +
-- default value
'SORT_IN_TEMPDB = OFF ' + ',' +
CASE
WHEN I.ignore_dup_key = 1 THEN ' IGNORE_DUP_KEY = ON '
ELSE ' IGNORE_DUP_KEY = OFF '
END + ',' +
CASE
WHEN ST.no_recompute = 0 THEN ' STATISTICS_NORECOMPUTE = OFF '
ELSE ' STATISTICS_NORECOMPUTE = ON '
END + ',' +
' ONLINE = OFF ' + ',' +
CASE
WHEN I.allow_row_locks = 1 THEN ' ALLOW_ROW_LOCKS = ON '
ELSE ' ALLOW_ROW_LOCKS = OFF '
END + ',' +
CASE
WHEN I.allow_page_locks = 1 THEN ' ALLOW_PAGE_LOCKS = ON '
ELSE ' ALLOW_PAGE_LOCKS = OFF '
END + ') ON [' +
DS.name + ' ] ' + CHAR(13) + CHAR(10) + ' GO' [CreateIndexScript]
FROM sys.indexes I
JOIN sys.tables T
ON T.object_id = I.object_id
JOIN sys.sysindexes SI
ON I.object_id = SI.id
AND I.index_id = SI.indid
JOIN (
SELECT *
FROM (
SELECT IC2.object_id,
IC2.index_id,
STUFF(
(
SELECT ' , ' + C.name + CASE
WHEN MAX(CONVERT(INT, IC1.is_descending_key))
= 1 THEN
' DESC '
ELSE
' ASC '
END
FROM sys.index_columns IC1
JOIN sys.columns C
ON C.object_id = IC1.object_id
AND C.column_id = IC1.column_id
AND IC1.is_included_column =
0
WHERE IC1.object_id = IC2.object_id
AND IC1.index_id = IC2.index_id
GROUP BY
IC1.object_id,
C.name,
index_id
ORDER BY
MAX(IC1.key_ordinal)
FOR XML PATH('')
),
1,
2,
''
) KeyColumns
FROM sys.index_columns IC2
--WHERE IC2.Object_id = object_id('Person.Address') --Comment for all tables
GROUP BY
IC2.object_id,
IC2.index_id
) tmp3
)tmp4
ON I.object_id = tmp4.object_id
AND I.Index_id = tmp4.index_id
JOIN sys.stats ST
ON ST.object_id = I.object_id
AND ST.stats_id = I.index_id
JOIN sys.data_spaces DS
ON I.data_space_id = DS.data_space_id
JOIN sys.filegroups FG
ON I.data_space_id = FG.data_space_id
LEFT JOIN (
SELECT *
FROM (
SELECT IC2.object_id,
IC2.index_id,
STUFF(
(
SELECT ' , ' + C.name
FROM sys.index_columns IC1
JOIN sys.columns C
ON C.object_id = IC1.object_id
AND C.column_id = IC1.column_id
AND IC1.is_included_column =
1
WHERE IC1.object_id = IC2.object_id
AND IC1.index_id = IC2.index_id
GROUP BY
IC1.object_id,
C.name,
index_id
FOR XML PATH('')
),
1,
2,
''
) IncludedColumns
FROM sys.index_columns IC2
--WHERE IC2.Object_id = object_id('Person.Address') --Comment for all tables
GROUP BY
IC2.object_id,
IC2.index_id
) tmp1
WHERE IncludedColumns IS NOT NULL
) tmp2
ON tmp2.object_id = I.object_id
AND tmp2.index_id = I.index_id
WHERE I.is_primary_key = 0
AND I.is_unique_constraint = 0
--AND T.name NOT LIKE 'mt_%'
--AND I.name NOT LIKE 'mt_%'
--AND I.Object_id = object_id('Person.Address') --Comment for all tables
--AND I.name = 'IX_Address_PostalCode' --comment for all indexes
類型2是非聚集的,你有什麼理由過濾掉了所有其他的索引類型?這個問題並不需要它。 ref https://msdn.microsoft.com/en-us/library/ms173760%28v=sql.110%29.aspx – 2015-06-08 14:26:44