SELECT 索引名称=a.name
,表名=c.name
,索引字段名=d.name
,索引字段位置=d.colid
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FROM sysindexes a
JOIN sysindexkeys b ON a.id=b.id AND a.indid=b.indid
JOIN sysobjects c ON b.id=c.id
JOIN syscolumns d ON b.id=d.id AND b.colid=d.colid
WHERE a.indid NOT IN(0,255)
-- and c.xtype=\'U\' and c.status>0 --查所有用户表 AND c.name=\'message\' --查指定表
ORDER BY c.name,a.name,d.name
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需创建索引 例如：
根据某列判断是否有重复记录，如果该列为非主键，则创建索引
根据经常查询的列，创建索引
无须创建索引
字段内容大部分一样，例如：男，女
不要给所有的列都创建索引，这样在创建新记录时，增加维护开销时间。
Oracle 查询用户表索引
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select index_name,index_type,table_name from user_indexes where table_name=\'表名\'
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SqlServer查询一个表上的索引
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SELECTTableId=O.[object_id],TableName=O.Name,
IndexId=ISNULL(KC.[object_id],IDX.index_id),
IndexName=IDX.Name,
IndexType=ISNULL(KC.type_desc,\'Index\'),
Index_Column_id=IDXC.index_column_id,ColumnID=C.Column_id,ColumnName=C.Name,
Sort=CASE INDEXKEY_PROPERTY(IDXC.[object_id],IDXC.index_id,IDXC.index_column_id,\'IsDescending\')
WHEN 1 THEN \'DESC\' WHEN 0 THEN \'ASC\' ELSE \'\' END,
PrimaryKey=CASE WHEN IDX.is_primary_key=1 THEN N\'√\'ELSE N\'\' END,
[UQIQUE]=CASE WHEN IDX.is_unique=1 THEN N\'√\'ELSE N\'\' END,
Ignore_dup_key=CASE WHEN IDX.ignore_dup_key=1 THEN N\'√\'ELSE N\'\' END,
Disabled=CASE WHEN IDX.is_disabled=1 THEN N\'√\'ELSE N\'\' END,
Fill_factor=IDX.fill_factor,Padded=CASE WHEN IDX.is_padded=1 THEN N\'√\'ELSE N\'\' END
FROM sys.indexes IDX
INNER JOIN sys.index_columns IDXC
ON IDX.[object_id]=IDXC.[object_id]
AND IDX.index_id=IDXC.index_id
LEFT JOIN sys.key_constraints KC
ON IDX.[object_id]=KC.[parent_object_id]
AND IDX.index_id=KC.unique_index_id
INNER JOIN sys.objects O
ON O.[object_id]=IDX.[object_id]
INNER JOIN sys.columns C
ON O.[object_id]=C.[object_id]
AND O.type=\'U\'
AND O.is_ms_shipped=0
AND IDXC.Column_id=C.Column_id where O.name=\'cz201\' --cz201是你要查询的表
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以上内容就是本文全部所述，希望大家喜欢。