[英]How to use insert query with select sub query and where clause?
我正在使用它,但是出了錯
$sql="INSERT INTO `shopping_cart`
(userid`,`product_id`,`pr_name`, `pr_price`)
VALUES('$us_id','$pr_id','$pname','$prprice')
WHERE(SELECT `product_id` FROM `product_tb_men`
JOIN `shopping_cart` ON product_tb_men.pr_id= shopping_cart.product_id
WHERE product_tb_men.pr_id=$pr_id)";
可能是您需要這個:
UPDATE `shopping_cart`
SET userid = '$us_id',
`product_id` = '$pr_id',
`pr_name` = '$pname',
`pr_price` = '$prprice'
WHERE <field_name_for_id> IN (SELECT `product_id` FROM `product_tb_men`
JOIN `shopping_cart` ON product_tb_men.pr_id= shopping_cart.product_id
WHERE product_tb_men.pr_id='$pr_id')
WHERE子句不能與INSERT一起使用。 SELECT下面的子查詢我一直保持不變,這就是你給的。 更改位於剩余的主查詢中
UPDATE `shopping_cart`
SET `userid` = '$us_id',
`product_id` = '$pr_id',
`pr_name` = '$pname',
`pr_price` = '$prprice'
WHERE `product_id` in (SELECT `product_id` FROM `product_tb_men`
JOIN `shopping_cart` ON product_tb_men.pr_id= shopping_cart.product_id
WHERE product_tb_men.pr_id=$pr_id);
試試這個查詢:
"INSERT INTO `shopping_cart` (`userid`,`product_id`,`pr_name`, `pr_price`)
SELECT '$us_id', '$pr_id','$pname','$prprice' FROM `product_tb_men`
JOIN `shopping_cart` ON product_tb_men.pr_id= shopping_cart.product_id
WHERE product_tb_men.pr_id= $pr_id"
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