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authorRyuta Kamizono <kamipo@gmail.com>2018-09-16 05:02:40 +0900
committerRyuta Kamizono <kamipo@gmail.com>2018-09-16 08:57:09 +0900
commitd681adbbb5e945994580a4e3b5103081888491b9 (patch)
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Use table name qualified column name for update counters
MySQL supports JOINs to UPDATE, so if column name isn't qualified by table name, it would cause an ambiguous error: ``` Mysql2::Error: Column 'integer' in field list is ambiguous: UPDATE `pets` INNER JOIN `toys` ON `toys`.`pet_id` = `pets`.`pet_id` SET `integer` = COALESCE(`integer`, 0) + 1 WHERE `toys`.`name` = ? ```
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