• 查询数据库已存在的索引


    SELECT       TableId=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,      
                 CColumnID=C.Column_id,      
                 CColumnName=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 
                  --    INNER JOIN -- 对于一个列包含多个索引的情况,只显示第1个索引信息  --    (  --        SELECT [object_id], Column_id, index_id=MIN(index_id)  --        FROM sys.index_columns  --        GROUP BY [object_id], Column_id  --    ) IDXCUQ  --        ON IDXC.[object_id]=IDXCUQ.[object_id]  --            AND IDXC.Column_id=IDXCUQ.Column_id
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  • 原文地址:https://www.cnblogs.com/hsyzero/p/4560913.html
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