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sql server遞歸子節(jié)點(diǎn)、父節(jié)點(diǎn)sql查詢表結(jié)構(gòu)的實(shí)例

發(fā)布日期:2021-12-15 06:42 | 文章來(lái)源:gibhub

一、查詢當(dāng)前部門下的所有子部門

WITH  dept
    AS ( SELECT  *
        FROM   dbo.deptTab --部門表
        WHERE  pid = @id
        UNION ALL
        SELECT  d.*
        FROM   dbo.deptTab d
            INNER JOIN dept ON d.pid = dept.id
       )
  SELECT *
  FROM  dept

二、查詢當(dāng)前部門所有上級(jí)部門

WITH  tab
     AS ( SELECT  DepId ,
            ParentId ,
            DepName ,
            [Enable] ,
            0 AS [Level]
        FROM   deptTab WITH ( NOLOCK ) --表名
        WHERE  [Enable] = 1
            AND depId = @depId
        UNION ALL
        SELECT  b.DepId ,
            b.ParentId ,
            b.DepName ,
            b.[Enable] ,
            a.[Level] + 1
        FROM   tab a ,
            deptTab b WITH ( NOLOCK )
        WHERE  a.ParentId = b.depId
            AND b.[enable] = 1
       )
  SELECT *
  FROM  tab WITH ( NOLOCK )
  WHERE  [enable] = 1
  ORDER BY [level] DESC

三、查詢當(dāng)前表的說(shuō)明描述

SELECT tbs.name 表名 ,
    ds.value 描述
FROM  sys.extended_properties ds
    LEFT JOIN sysobjects tbs ON ds.major_id = tbs.id
WHERE  ds.minor_id = 0
    AND tbs.name = 'userTab';--表名

四、查詢當(dāng)前表的表結(jié)構(gòu)(字段名、屬性、默認(rèn)值、說(shuō)明等)

SELECT CASE WHEN col.colorder = 1 THEN obj.name
       ELSE ''
    END AS 表名 ,
    col.colorder AS 序號(hào) ,
    col.name AS 列名 ,
    ISNULL(ep.[value], '') AS 列說(shuō)明 ,
    t.name AS 數(shù)據(jù)類型 ,
    col.length AS 長(zhǎng)度 ,
    ISNULL(COLUMNPROPERTY(col.id, col.name, 'Scale'), 0) AS 小數(shù)位數(shù) ,
    CASE WHEN COLUMNPROPERTY(col.id, col.name, 'IsIdentity') = 1 THEN '√'
       ELSE ''
    END AS 標(biāo)識(shí) ,
    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 主鍵 ,
    CASE WHEN col.isnullable = 1 THEN '√'
       ELSE ''
    END AS 允許空 ,
    ISNULL(comm.text, '') AS 默認(rèn)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 = 'userTab'--表名(點(diǎn)此修改) 
ORDER BY col.colorder;

以上所述是小編給大家介紹的sql server遞歸子節(jié)點(diǎn)、父節(jié)點(diǎn)sql查詢表結(jié)構(gòu)的實(shí)例,希望對(duì)大家有所幫助,如果大家有任何疑問(wèn)請(qǐng)給我留言,小編會(huì)及時(shí)回復(fù)大家的。在此也非常感謝大家對(duì)本站網(wǎng)站的支持!

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