排他制御に関して知らないSQLが出てきたのでまとめていく SELECT * FROM user_table WHERE user_id = 1 FOR UPDATE; 行ロック(Row-Level Locks): 標準 SQL の FOR UPDATE に加え、FOR SHARE/FOR NO KEY UPDATE/FOR KEY SHARE、SKIP LOCKED/NOWAIT などがある。
Database troubleshooting is not for the faint of heart, especially when it comes to troubleshooting locking and blocking problems. Sometimes the elephant in the room is actually a rhino, a problem ...
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