Welcome to ShenZhenJia Knowledge Sharing Community for programmer and developer-Open, Learning and Share
menu search
person
Welcome To Ask or Share your Answers For Others

Categories

I'm trying to update row in a table using values from a different row (and different columns) in the same table. Something along the lines of this, although my syntax produces no results: Here is the code (updated):

UPDATE table1 AS t1 INNER JOIN
(SELECT field_id_46,field_id_47 FROM table1 WHERE entry_id = 36) AS t2
SET t1.field_id_60 = t2.field_id_46, t1.field_id_61 = t2.field_id_47
WHERE t1.entry_id = 45;
See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
thumb_up_alt 0 like thumb_down_alt 0 dislike
408 views
Welcome To Ask or Share your Answers For Others

1 Answer

update table as t1
inner join (
select field_id_46,field_id_47 from table where entry_id = 36) as t2
set t1.field_id_60 = t2.field_id_46,
    t1.field_id_61 = t2.field_id_47
where t1.entry_id = 45

or, simply

update table as t1,
(
select field_id_46,field_id_47 from table where entry_id = 36) as t2
set t1.field_id_60 = t2.field_id_46,
    t1.field_id_61 = t2.field_id_47
where t1.entry_id = 45

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
thumb_up_alt 0 like thumb_down_alt 0 dislike
Welcome to ShenZhenJia Knowledge Sharing Community for programmer and developer-Open, Learning and Share
...