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sElECt For upDAtE

号夸頁FOR UPDATE囂鞘繍迄廖臥儂潤惚嶄議圷怏宸乂圷怏繍音嬬瓜凪麿並暦議UPDATEDELETE才FOR UPDATE荷恬岷欺云並暦戻住。 侭參 1、辛參 2、頁議

麿断厮将傍阻犢惶超廉阻 厘壅温割叱泣 蛍撹曾窃瑳嗚袈律徨鞘才紗迄佩葎徨鞘 紗迄袈律徨鞘 壓select´for update岻朔辛參聞喘of徨鞘僉夲斤select議蒙協方象燕序佩紗迄荷恬。潮範秤趨和音聞喘of徨鞘燕幣壓select侭嗤議方象燕嶄紗迄 紗...

旗鷹泌和: vipMember = SELECT * FROM vip_member WHERE uid=1001 LIMIT 1 # 臥uid葎1001議氏埀if vipMember.end_at < NOW(): UPDATE vip_member SET start_at=NOW(), end_at=DATE_ADD(NOW(), INTERVAL 1 MONTH), active_status=1, updated_at=N...

1. 壓ORACLE嶄喘ROWID栖協了芝村頁恷酔議曳沫哈珊酔侭參泌惚枠喘SELECT ROWID僉竃勣厚仟議佩慧秘COLLECTION嶄壅喘 FORALL UPDATE 栖答楚厚仟辛參戻互堀業。貫宸泣栖讐頁曳凪麿圭隈挫匯泣 2. SELECT FOR UPDATE壓厚仟念氏迄協芝村宸壓...

糞嵋実珪擁罵┨曾倖燕議購選忖粁岻朔繍潤惚厚仟欺総翌匯倖燕嶄 sqlupdate b set a3=(select a3 from a where a.a1=b.b1 and a.a2=b.b2) 姥廣妻荒檀榔灑鐓筍音贋壓b燕嶄議a燕方象音氏瓜厚仟。

1 update B1 set strNum = strNum - B2.intNum where strId IN (select intId from B2 where B2.intId =B1.strId ) 2 update B1 set strNum = strNum - B2.intNum from B1 INNER JOIN B2 on B2.intId=B1.strId

辛參斤宸粁卦指議潤惚鹿序佩俐個 埋傍糞縞貧頁宸劔徽頁荷恬嶄頁音塋俯嗤鹸墫┥杠蓮∩俊柴麻議匯違峪頁select 匯嫖燕割凪楚紗貧乂where囂鞘隼朔祥辛參序佩俐個方象俐個頼撹朔辛參commit 貫圻尖貧栖傍 for update祥頁匯嶄旺窟來議佩...

恬喘:辛參岷俊俐個低 SELECT 竃栖議方象 嶬敲荒select for update栖臥儂方象參器欺電麿響議朕議。徽頁窟孱壓嗤屎械潤惚方象扮夛撹議迄燕斤狼由來嬬嗤苧垉慯囲譟 觜壓dao坪喘synchronized序佩揖化徽壓謹岬捲暦匂貧珊頁氏贋壓諒籾。 ...

捲暦匂2 頁倦蝕尼並暦峇佩 select for update

曾宀脅頁sql喘噐厚仟方象燕坪否議囂鞘凪嶄nowait購囚忖,頁宥岑Oracle乎sql囂鞘寡喘掲怦毘議圭塀俐個賜評茅方象,泌惚窟嵒羲圧週鎚象瓜媼嗤(瓜迄),夸羨軸宥岑Oracle乎彿坿瓜媼喘,卦指危列佚連。 宥没栖傍 遍枠匯泣泌惚峪頁select 議三Orac...

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