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![MySQL :: MySQL 5.0 Reference Manual :: 13.2.8 SELECT Syntax]()
dev.mysql.comA select_expr can be given an alias using AS alias_name. The alias is used as the expression's column name and can be used in GROUP BY, ORDER BY, or HAVING clauses. For example: SELECT CONCAT(last_name ...瀏覽：1452 -
![[MySQL] 使用SELECT ... FOR UPDATE 做交易寫入前的確認: Neo 's ...]()
www.neo.com.tw2006年3月4日 ... 這二種方式在交易(Transaction) 進行當中SELECT 到同一個資料表時，都必須等待 它方交易資料被送交(Commit)後才會執行。而主要的不同 ...瀏覽：1264
![[MySQL] 使用SELECT ... FOR UPDATE 做交易寫入前的確認: Neo 's ...](https://www.iarticlesnet.com/pub/img/site/s_43.jpeg)
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日期：2024-10-11
假設我們有一套出貨系統，在出貨時必須確認還有貨，那我們會下下面這樣的兩行
SQL ︰ SELECT quantity FROM product WHERE product_id = 5; UPDATE ......
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日期：2024-10-09
This Oracle tutorial explains how to use the Oracle/PLSQL SELECT FOR
UPDATE statement with syntax and examples. The SELECT FOR UPDATE
statement ......
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日期：2024-10-07
For index records the search encounters, SELECT ... FOR UPDATE blocks other
sessions from doing SELECT ... LOCK IN SHARE MODE or from reading in ......
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日期：2024-10-06
If you query data and then insert or update related data within the same
transaction, the regular SELECT statement does not give enough protection....
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日期：2024-10-10
If you query data and then insert or update related data within the same
transaction, the regular SELECT statement does not give enough protection....
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日期：2024-10-07
If you query data and then insert or update related data within the same
transaction, the regular SELECT statement does not give enough protection....
瀏覽：392
日期：2024-10-11
If you query data and then insert or update related data within the same
transaction, the regular SELECT statement does not give enough protection....
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日期：2024-10-05
The only portable way to achieve consistency between rooms and tags and
making sure rooms are never returned after they had been deleted is ......
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