使用SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;修改數據庫隔離級別, 而後執行SELECT @@TX_ISOLATION;後發現數據庫的隔離級別並無發生改變
mysql
因而google了一下, https://dba.stackexchange.com/questions/50716/why-cant-i-change-the-isolation-levels-of-my-connection-in-mysqlsql
發現可使用其餘命令來改變數據庫隔離級別:數據庫
SET tx_isolation = 'READ-UNCOMMITTED';
或google
SET SESSION tx_isolation = 'READ-UNCOMMITTED';