MySQL内部连接查询给出错误

Question

I have two Tables - char_items and items . item_id is a common field among the two tables.

I want read the item_id from 'char_items' table and use that to obtain other information from the 'items' table based on that item_id. But my query is showing up as incorrect in MySQL. Please help --

SELECT * FROM `char_items` WHERE char_id=$char_id && isSlotted=1 INNER JOIN `items` ON char_items.item_id=items.item_id

I keep getting the message:

#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'INNER JOIN `items` ON char_items.item_id=items.item_id

LIMIT 0, 30' at line 1

Answer 1

Joins need to happen before the where clause

SELECT * 
  FROM char_items c
 INNER 
  JOIN items i
    ON c.item_id = i.item_id
 WHERE char_id = $char_id 
   AND isSlotted = 1 

Answer 2

应该在join子句之后的位置，如下所示。

SELECT * FROM `char_items` INNER JOIN `items` ON char_items.item_id=items.item_id WHERE char_id=$char_id && isSlotted=1;