我想要一个存储过程来创建一个临时表,使用数据填充表,然后返回表。这是我的:为什么这个MySQL存储过程不按照我的要求工作?
CREATE PROCEDURE sp_create_r3(p_panel_id INT)
BEGIN
-- create new temporary table
DROP TABLE IF EXISTS temp;
CREATE TEMPORARY TABLE temp(assembly_id INT, cost1 DECIMAL(10,2), cost2 DECIMAL(10,2));
-- populate table
SELECT sf_assembly_breakdown(assembly_id) AS dummy FROM panel_assembly WHERE panel=p_panel_id;
-- return table
SELECT * FROM temp;
END
CREATE FUNCTION sf_assembly_breakdown (p_assembly_id INT) RETURNS INT
BEGIN
DECLARE cost1 DECIMAL(10,2);
DECLARE cost2 DECIMAL(10,2);
-- calculate cost1, cost2 here
...
-- insert data into temporary table
INSERT INTO temp SELECT p_assembly_id , cost1, cost2;
-- return dummy value
RETURN NULL;
END
虽然这并不奏效!由sp_create_r3
返回的结果集是生成者:
SELECT sf_assembly_breakdown(assembly_id) AS dummy FROM panel_assembly WHERE panel=p_panel_id;
我不想返回这个。我想返回SELECT * FROM temp
;
这可能吗?如果不是什么选择?