SQL表结构信息,应该如何查询呢?下面就教您SQL表结构信息查询的方法,如果您对SQL表结构方面感兴趣的话,不妨一看。
- SELECT
- TableName=CASE WHEN C.column_id=1 THEN O.name ELSE N'' END,
- TableDesc=ISNULL(CASE WHEN C.column_id=1 THEN PTB.[value] END,N''),
- CColumn_id=C.column_id,
- CColumnName=C.name,
- PrimaryKey=ISNULL(IDX.PrimaryKey,N''),
- [IDENTITY]=CASE WHEN C.is_identity=1 THEN N'√'ELSE N'' END,
- Computed=CASE WHEN C.is_computed=1 THEN N'√'ELSE N'' END,
- TType=T.name,
- Length=C.max_length,
- Precision=C.precision,
- Scale=C.scale,
- NullAble=CASE WHEN C.is_nullable=1 THEN N'√'ELSE N'' END,
- [Default]=ISNULL(D.definition,N''),
- ColumnDesc=ISNULL(PFD.[value],N''),
- IndexName=ISNULL(IDX.IndexName,N''),
- IndexSort=ISNULL(IDX.Sort,N''),
- Create_Date=O.Create_Date,
- Modify_Date=O.Modify_date
- FROM sys.columns C
- INNER JOIN sys.objects O
- ON C.[object_id]=O.[object_id]
- AND O.type='U'
- AND O.is_ms_shipped=0
- INNER JOIN sys.types T
- ON C.user_type_id=T.user_type_id
- LEFT JOIN sys.default_constraints D
- ON C.[object_id]=D.parent_object_id
- AND C.column_id=D.parent_column_id
- AND C.default_object_id=D.[object_id]
- LEFT JOIN sys.extended_properties PFD
- ON PFD.class=1
- AND C.[object_id]=PFD.major_id
- AND C.column_id=PFD.minor_id
- -- AND PFD.name='Caption' -- 字段说明对应的描述名称(一个字段可以添加多个不同name的描述)
- LEFT JOIN sys.extended_properties PTB
- ON PTB.class=1
- AND PTB.minor_id=0
- AND C.[object_id]=PTB.major_id
- -- AND PFD.name='Caption' -- 表说明对应的描述名称(一个表可以添加多个不同name的描述)
- LEFT JOIN -- 索引及主键信息
- (
- SELECT
- IDXC.[object_id],
- IDXC.column_id,
- 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,
- IndexName=IDX.Name
- 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 -- 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
- AND IDXC.index_id=IDXCUQ.index_id
- ) IDX
- ON C.[object_id]=IDX.[object_id]
- AND C.column_id=IDX.column_id
- -- WHERE O.name=N'要查询的表' -- 如果只查询指定表,加上此条件
- ORDER BY O.name,C.column_id
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