- 求解器
- 優(yōu)化程序;優(yōu)化器
- 最佳化器
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- If the runtime optimizer is disabled ; otherwise ,
如果運(yùn)行庫(kù)優(yōu)化程序已禁用,則為 - Recreate optimizer access plans using db2look
使用db2look重新創(chuàng)建優(yōu)化器訪問(wèn)計(jì)劃 - To disable the optimizer for execution ; otherwise ,
如果禁用執(zhí)行優(yōu)化程序,則為 - Simple instructs the query optimizer to attempt
Simple指示查詢優(yōu)化器嘗試進(jìn)行 - A . viewing statistics on optimizer execution
A .查看有關(guān)優(yōu)化器執(zhí)行的統(tǒng)計(jì)信息 - Tells the optimizer that at that line of code the variable
通知優(yōu)化器,在該行代碼中, - Name of optimizer statistics event . occurrence
優(yōu)化器統(tǒng)計(jì)信息事件的名稱(chēng)。 - The optimizer is the heart and soul of db2
優(yōu)化器是db2的心臟和靈魂。 - Figure 2 illustrates the basic functionality of the optimizer
圖2演示了優(yōu)化器的主要功能。 - Query execution costs are estimated by the query optimizer
由查詢優(yōu)化器估計(jì)查詢執(zhí)行開(kāi)銷(xiāo)。