sql - SQL 查询：游戏服务器。如果我分解查询，它会起作用。如果我把它们放在一起，它会失败

Question

查询是：

插入 char_inventory (charid,location,slot,itemid,quantity) 值（从 charid 不在的字符中选择 charid（从 char_inventory 中选择 charid，其中 itemid=65535），0,0,65535,10000）；

Answer 1

使用INSERT INTO...SELECT语句LEFT JOIN

INSERT INTO char_inventory (charid, location, slot, itemid, quantity) 
SELECT  chars.charid, 0 , 0, 65535, 10000
FROM    chars
        LEFT JOIN char_inventory
            ON  chars.charid = char_inventory.charid AND
                char_inventory.itemid = 65535
WHERE   char_inventory.charid IS NULL

Answer 2

这个怎么样

insert into char_inventory (charid,location,slot,itemid,quantity) 
select charid,0,0,65535,10000 from chars where charid not in (select charid from char_inventory where itemid=65535)

Answer 3

试试这个：

insert into char_inventory (charid,location,slot,itemid,quantity)
    select charid,0,0,65535,10000
    from chars
    where charid not in (select charid from char_inventory where itemid=65535)