keyset中文什么意思

索引键集

• keyset-driven:    键集驱动
• keyset-type:    键集类型
• keyset-driven cursor:    键集驱动游标; 由键集驱动的游标

例句与用法

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1. If the query references at least one table without a unique index , the keyset cursor is converted to a static cursor
   如果查询引用了至少一个无唯一索引的表，则键集游标将转换为静态游标。
2. Two unique sets of self - work controling circuit are the unlocked circuits of both password keyset and electronic key
   独特的两套独立工作的控制电路，即密码键盘开锁电路及电子钥匙开锁电路。
3. Lists scenarios in which you might or might not be able to update results obtained through an updatable keyset - driven cursor
   列出您能够更新（或不能够更新）通过可更新键集驱动游标获得的结果的情形。
4. The keyset is locked one minute after 5 times wrong words . if it is moved , knocked or hitted strongly , it ' ll give out a high - decibel alarm
   5次错码锁住键盘1分钟。搬移、敲击、大力碰撞都将发出高分贝报警声。
5. When cursors generate a keyset for a result set , the query optimizer estimates the number of rows that will be returned for that result set
   游标为某个结果集生成键集时，查询优化器将估计为该结果集返回的行数。