SQL - 为每条记录调用存储过程

Question

我正在寻找一种方法来为 select 语句的每条记录调用存储过程。

SELECT @SomeIds = (
    SELECT spro.Id 
    FROM SomeTable as spro
    INNER JOIN [Address] addr ON addr.Id = spro.Id 
    INNER JOIN City cty ON cty.CityId = addr.CityId
    WHERE cty.CityId = @CityId
)


WHILE @SomeIds  IS NOT NULL
BEGIN
    EXEC UpdateComputedFullText @SomeIds
END

上面的这样的事情当然是行不通的，但是有没有办法做到这样的事情呢？

Answer 1

您需要使用光标。

DECLARE @oneid int -- or the appropriate type

DECLARE the_cursor CURSOR FAST_FORWARD
FOR SELECT spro.Id  
    FROM SomeTable as spro 
        INNER JOIN [Address] addr ON addr.Id = spro.Id  
        INNER JOIN City cty ON cty.CityId = addr.CityId 
    WHERE cty.CityId = @CityId

OPEN the_cursor
FETCH NEXT FROM the_cursor INTO @oneid

WHILE @@FETCH_STATUS = 0
BEGIN
    EXEC UpdateComputedFullText @oneid

    FETCH NEXT FROM the_cursor INTO @oneid
END

CLOSE the_cursor
DEALLOCATE the_cursor