数据字典格式的表结构(表名,字段名,字段类型,字段长度,备注)

数据字典格式的表结构(表名,字段名,字段类型,字段长度,备注)

DECLARE @tableName VARCHAR(500);

SET @tableName = '表名';

SELECT one.表名,
       one.字段名,
       one.字段类型,
       two.column_description
FROM
(
    SELECT a.name 表名,
           b.name 字段名,
           c.name 字段类型,
           c.length 字段长度
    FROM sysobjects a,
         syscolumns b,
         systypes c
    WHERE a.id = b.id
          AND a.name = @tableName
          AND a.xtype = 'U'
          AND b.xtype = c.xtype
) one
    LEFT JOIN
    (
        SELECT A.name AS table_name,
               B.name AS column_name,
               C.value AS column_description
        FROM sys.tables A
            INNER JOIN sys.columns B
                ON B.object_id = A.object_id
            LEFT JOIN sys.extended_properties C
                ON C.major_id = B.object_id
                   AND C.minor_id = B.column_id
        WHERE A.name = @tableName
    ) two
        ON one.字段名 = two.column_name;

--快速查看表结构（比较全面的）
DECLARE @tableName NVARCHAR(MAX	)
SET @tableName='表名!!!';--表名!!!!

SELECT CASE WHEN col.colorder = 1 THEN obj.name
ELSE ''
END AS 表名,
col.colorder AS 序号 ,
col.name AS 列名 ,
ISNULL(ep.[value], '') AS 列说明 ,
t.name AS 数据类型 ,
col.length AS 长度 ,
ISNULL(COLUMNPROPERTY(col.id, col.name, 'Scale'), 0) AS 小数位数 ,
CASE WHEN COLUMNPROPERTY(col.id, col.name, 'IsIdentity') = 1 THEN '√'
ELSE ''
END AS 标识 ,
CASE WHEN EXISTS ( SELECT 1
FROM dbo.sysindexes si
INNER JOIN dbo.sysindexkeys sik ON si.id = sik.id
AND si.indid = sik.indid
INNER JOIN dbo.syscolumns sc ON sc.id = sik.id
AND sc.colid = sik.colid
INNER JOIN dbo.sysobjects so ON so.name = si.name
AND so.xtype = 'PK'
WHERE sc.id = col.id
AND sc.colid = col.colid ) THEN '√'
ELSE ''
END AS 主键 ,
CASE WHEN col.isnullable = 1 THEN '√'
ELSE ''
END AS 允许空 ,
ISNULL(comm.text, '') AS 默认值
FROM dbo.syscolumns col
LEFT JOIN dbo.systypes t ON col.xtype = t.xusertype
inner JOIN dbo.sysobjects obj ON col.id = obj.id
AND obj.xtype = 'U'
AND obj.status >= 0
LEFT JOIN dbo.syscomments comm ON col.cdefault = comm.id
LEFT JOIN sys.extended_properties ep ON col.id = ep.major_id
AND col.colid = ep.minor_id
AND ep.name = 'MS_Description'
LEFT JOIN sys.extended_properties epTwo ON obj.id = epTwo.major_id
AND epTwo.minor_id = 0
AND epTwo.name = 'MS_Description'
WHERE obj.name = @tableName--表名
ORDER BY col.colorder ;