统计数据库中符合条件的表中记录的总数

DECLARE   @tableName   VARCHAR ( 30 ), @selestr   NVARCHAR ( 100 )
DECLARE   @i   int , @total   INT
DECLARE ourcur CURSOR   FOR   SELECT name FROM sysobjects WHERE xtype = ' U '
OPEN ourcur
FETCH   NEXT   FROM ourcur INTO   @tableName
SET   @total = 0
WHILE   @@FETCH_STATUS = 0
BEGIN
      IF   @tableName   LIKE statemen_1            -- 符合第一个条件的表
     BEGIN
         SET   @selestr = ' SELECT @m=COUNT(*) FROM ' + @tableName
         EXEC sp_executesql @selestr ,N ' @m INT OUTPUT ' , @i OUTPUT
         SET   @total = @total + @i
      END

      ELSE   IF   @tableName   LIKE statement_2       -- 符合第二个条件的表
     BEGIN
         SET   @selestr = ' SELECT @m=COUNT(*) FROM ' + @tableName
         EXEC sp_executesql @selestr ,N ' @m INT OUTPUT ' , @i OUTPUT
         SET   @total = @total + @i
      END

      ELSE   IF   @tableName   LIKE statement_3       -- 符合第三个条件的表
     BEGIN
         SET   @selestr = ' SELECT @m=COUNT(*) FROM ' + @tableName
         EXEC sp_executesql @selestr ,N ' @m INT OUTPUT ' , @i OUTPUT
         SET   @total = @total + @i
      END
      FETCH   NEXT   FROM ourcur INTO   @tableName
END
DEALLOCATE ourcur
SELECT   @total   AS TotalDataNum                  -- 显示记录总数

 

statement_1/_2/_3…可以插入多个条件来进行匹配操作，期货总的sql语句也可以替换成插入、更新等，批量处理，很方便！