PHP查询 - 当用户ID存储在另一个表中时,如何在表中添加新列并插入用户信息? [英]PHP queries - How to add new column and insert user info in table, when user id is stored in another table?
PHP连接两个表,其中一个表中的两列包含from_ID和to_ID引用另一表中的id [英]PHP join two table where two column in one table contains from_ID and to_ID refer to id in another table
当在另一张表中添加行(列名=行ID)时,如何同时更改表(添加列)? [英]How to alter a table (add a column) simultaneously when a row is added (column name = row id) in another table?
PHP MySQL“从`table` WHERE`id` = |未知列`id`中删除 [英]PHP MySQL "DELETE FROM `table` WHERE `id` = | unknown column `id`
Laravel:如何查询表,从每个唯一 item_id 的列中获取第一个值并将其分配给另一个表列 [英]Laravel: how to query a table, take the first value of from a column for each unique item_id and assign it to another table column