mysql程序

Question

DELIMITER $$

DROP PROCEDURE IF EXISTS
`ufdc_sales`.`depot_stack_register3_7_2` $$
CREATE DEFINER=`root`@`%` PROCEDURE `enter code here`
`depot_stack_register3_7_2`( IN stackId BIGINT,IN speciesId 
BIGINT,IN fromdate DATE,IN todate DATE)
BEGIN
set @mysql='select  sdt.depot_lot_no

from stack st , stock_detail_trans  sdt 

where sdt.stack_id=st.id 
      SET @mysql = @mysql+' AND st.SPECIES_ID='+1;
END $$
DELIMITER ;

追加错误。我想知道如何添加此查询。

Answer 1

尝试，

SET @mysql='select  sdt.depot_lot_no
            from stack st , stock_detail_trans  sdt 
            where sdt.stack_id=st.id';
SET @mysql = CONCAT(@mysql, ' AND st.SPECIES_ID = 1');

Answer 2

行情成对出现。而不是：

set @mysql='select  sdt.depot_lot_no
from stack st , stock_detail_trans  sdt 
where sdt.stack_id=st.id 
      SET @mysql = @mysql+' AND st.SPECIES_ID='+1;

...尝试：

set @mysql='select  sdt.depot_lot_no
    from stack st , stock_detail_trans  sdt 
    where sdt.stack_id=st.id ';
SET @mysql = @mysql+' AND st.SPECIES_ID='+1;

请不要忽略错误消息。他们在这里帮助你！