在MySQL的where子句中使用多个表更新查询

Question

I want to set the term_taxonomy_id = '4' in table lp_term_relationships where post_title

Like '%Apple%'. Column post_title is in the table lp_posts . But it is giving me the syntax error. Any help ??

This is my Query:

Update `lp_term_relationships`     
set `lp_term_relationships`.`term_taxonomy_id` = '4'   
FROM `lp_term_relationships`, `lp_posts `  
WHERE  `lp_posts`.`post_title` Like '%Apple%';

Answer 1

you need to perform a proper join here. You have not mentioned the foreign key relation that links both of them...Add the foreign key relationship in the where clause as well..Your final query would be something like this:

update table1, table2 
set table1.col=1
where table1.id= table2.fkey_id
and table1.column2 like '%APPLE%'

you need to write the correct column names and relationship that links the tables.