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  • 比较两个数据库中表和字段的差异

    -- 比较两个数据库中表的差异
    -- u表,p存储过程,v视图
    -- INTFSIMSNEW新库,INTFSIMS旧库
    SELECT NTABLE = A.NAME, OTABLE = B.NAME
    FROM INTFSIMSNEW..SYSOBJECTS A
      LEFT JOIN INTFSIMS..SYSOBJECTS B
        ON A.NAME = B.NAME
    WHERE ISNULL(B.NAME, '') = ''
      AND A.XTYPE = 'U'

    UNION ALL

    SELECT NTABLE = B.NAME, OTABLE = A.NAME
    FROM INTFSIMS..SYSOBJECTS A
      LEFT JOIN INTFSIMSNEW..SYSOBJECTS B
        ON A.NAME = B.NAME
    WHERE ISNULL(B.NAME, '') = ''
      AND A.XTYPE = 'U'
    ORDER BY 1, 2

    -- 比较两个数据库中每个表字段的差异
    SELECT
      表名A = CASE WHEN ISNULL(A.TABLENAME, '') <> '' THEN A.TABLENAME ELSE B.TABLENAME END,
      字段名A = A.FIELDNAME,
      字段名B = B.FIELDNAME,
      顺序= A.FIELDSNO,
      说明= CASE WHEN A.FIELDTYPE <> B.FIELDTYPE THEN '类型: ' + A.FIELDTYPE + '-->' + B.FIELDTYPE
                  WHEN A.FIELDSNO <> B.FIELDSNO THEN '顺序: ' + str(A.FIELDSNO) + '-->' + str(B.FIELDSNO)
                  WHEN A.LENGTH <> B.LENGTH THEN '长度: ' + str(A.LENGTH) + '-->' + str(B.LENGTH)
                  WHEN A.LENSEC <> B.LENSEC THEN '小数位: ' + str(A.LENSEC) + '-->' + str(B.LENSEC)
                  WHEN A.ALLOWNULL <> B.ALLOWNULL THEN '允许空值: ' + str(A.ALLOWNULL) + '-->' + str(B.ALLOWNULL)
             END
    FROM (SELECT
            TABLENAME = B.NAME,
            FIELDNAME = A.NAME,
            FIELDSNO = A.COLID,
            FIELDTYPE = C.NAME,
            LENGTH = A.LENGTH,
            LENSEC = A.XSCALE,
            ALLOWNULL = A.ISNULLABLE
          FROM INTFSIMSNEW..SYSCOLUMNS A
            LEFT JOIN INTFSIMSNEW..SYSOBJECTS B
              ON A.ID = B.ID
            LEFT JOIN INTFSIMSNEW..SYSTYPES C
              ON A.XUSERTYPE = C.XUSERTYPE
          WHERE B.XTYPE = 'U') A
      FULL JOIN (SELECT
                   TABLENAME = B.NAME,
                   FIELDNAME = A.NAME,
                   FIELDSNO = A.COLID,
                   FIELDTYPE = C.NAME,
                   LENGTH = A.LENGTH,
                   LENSEC = A.XSCALE,
                   ALLOWNULL = A.ISNULLABLE
                 FROM INTFSIMS..SYSCOLUMNS A
                   LEFT JOIN INTFSIMS..SYSOBJECTS B
                     ON A.ID = B.ID
                   LEFT JOIN INTFSIMS..SYSTYPES C
                     ON A.XUSERTYPE = C.XUSERTYPE
                 WHERE B.XTYPE = 'U') B
        ON A.TABLENAME = B.TABLENAME
          AND A.FIELDNAME = B.FIELDNAME
    WHERE ISNULL(A.TABLENAME, '') = ''
      OR ISNULL(B.TABLENAME, '') = ''
      OR A.FIELDTYPE <> B.FIELDTYPE
      OR A.FIELDSNO <> B.FIELDSNO
      OR A.LENGTH <> B.LENGTH
      OR A.LENSEC <> B.LENSEC
      OR A.ALLOWNULL <> B.ALLOWNULL
    ORDER by 1, 4

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      作      者:温景良
      文章出处:http://wenjl520.cnblogs.com/  或  http://www.cnblogs.com/

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  • 原文地址:https://www.cnblogs.com/wenjl520/p/1317737.html
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