SQL语句查询出数据库中所有表的结构

</pre><pre name="code" class="sql">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""),
    Column_id=C.column_id,
    ColumnName=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,
    Type=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"  
    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"  

    LEFT JOIN                      
    (
        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  
        (
            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 


ORDER BY O.name,C.column_id </pre><pre name="code" class="sql">SELECT 
    Tab