自己写代码工具必备sql语句，获得表属性全部内容

SELECT
表名 = CASE WHEN A.COLORDER=1 THEN D.NAME ELSE '' END,
表說明 = CASE WHEN A.COLORDER=1 THEN ISNULL(F.VALUE,'') ELSE '' END,
欄位序號 = A.COLORDER,
欄位名 = A.NAME,
標識 = CASE WHEN COLUMNPROPERTY( A.ID,A.NAME,'ISIDENTITY')=1 THEN '√'ELSE '' END,
主鍵 = CASE WHEN EXISTS(SELECT 1 FROM SYSOBJECTS WHERE XTYPE='PK' AND PARENT_OBJ=A.ID AND NAME IN (
SELECT NAME FROM SYSINDEXES WHERE INDID IN(
SELECT INDID FROM SYSINDEXKEYS WHERE ID = A.ID AND COLID=A.COLID))) THEN '√' ELSE '' END,
類型 = B.NAME,
佔用位元組數 = A.LENGTH,
長度 = COLUMNPROPERTY(A.ID,A.NAME,'PRECISION'),
小數位數 = ISNULL(COLUMNPROPERTY(A.ID,A.NAME,'SCALE'),0),
允許空 = CASE WHEN A.ISNULLABLE=1 THEN '√'ELSE '' END,
預設值 = ISNULL(E.TEXT,''),
欄位說明 = ISNULL(G.[VALUE],'')
FROM
SYSCOLUMNS A
LEFT JOIN
SYSTYPES B
ON
A.XUSERTYPE=B.XUSERTYPE
INNER JOIN
SYSOBJECTS D
ON
A.ID=D.ID AND D.XTYPE='U' AND D.NAME<>'DTPROPERTIES'
LEFT JOIN
SYSCOMMENTS E
ON
A.CDEFAULT=E.ID
LEFT JOIN
sys.extended_properties G
ON
A.ID=G.major_id AND A.COLID=G.minor_id
LEFT JOIN
sys.extended_properties F
ON
D.ID=F.major_id AND F.minor_id=0
ORDER BY
A.ID,A.COLORDER