I am confused about how to copy a column from one table to another table using where. I wrote SQL query but it says transaction lock time exceeded or query returns more than one row.
using mysql
Basically,
I have:
Table 1: Results
BuildID platform_to_insert
Table 2: build
BuildID correct_platform
update results set results.platform_to_insert
= (select correct_platform from
build where results.BuildID = build.BuildID)
I do not believe you need a sub query.
UPDATE results, build
SET results.platform_to_insert = build.correct_platform
WHERE results.BuildID = build.BuildID
There are two options here:
BuildID
as a primary key (to avoid duplicates) update your subquery to only return one result
UPDATE results SET results.platform_to_insert = ( SELECT correct_platform FROM build WHERE results.BuildID=build.BuildID LIMIT 1 );
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