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存儲過程中的某些字段在其之前有一個「@」符號。這是什麼意思?'@'在SQL存儲過程中意味着什麼?
忽略字段和數據本身。
, cast(hi.date_closed as date) hiclose
, @helloclose:=cast(ifnull(audit.date_created,hello.date_entered)
, cast(@hi-INTERVAL WEEKDAY(@hiclose)DAY as datetime) himonclose
, @oppentered:=cast(opp.date_entered - interval 5 hour as datetime) hicreate
, cast(@oppentered - INTERVAL WEEKDAY(@oppentered)DAY as datetime) himoncreate