So if an access plan is reused, a database server requires less CPU resources to execute the corresponding SQL statement repeatedly.
因此,如果一个访问计划被重用,则数据库服务器重复执行相应sql语句所需的CPU资源将减少。
A script usually contains a sequence of statements. If there is more than one statement, the results appear one at a time as the statements execute.
脚本一般都是包含了一系列的语句。如果语句超过一条,每个语句执行的时候都会显示结果。比如下面这个。
You create a Statement to execute commands to drop and recreate the table, which allows you to reset the database from this program if it becomes corrupted.
创建一个Statement来执行删除和重新创建表的命令,这允许您在数据库受损时通过此程序重置数据库。
Remember that you execute the body of an if statement only if the expression is True, which for this expression happens when the variable I is not evenly divisible by 25.
记住,您只在表达式为True时执行if语句体。该表达式在当变量i不能被25整除时计算为True。
Up to this point, you've seen how the if statement can be used to execute one of two blocks of program statements, depending on the value of a particular Boolean expression.
至此,已经看到了if语句可以如何用于根据一个特定布尔表达式的值,来执行两个程序语句块中的其中一个。
When you execute a prepared statement, IDS now detects changes to underlying objects and re-prepares (re-compiles) the statement if needed.
当执行预编译语句时,IDS检测底层对象的变化,必要时重新准备(重新编译)语句。
When you execute a prepared statement, IDS now detects changes to underlying objects and re-prepares (re-compiles) the statement if needed.
当执行预编译语句时,IDS检测底层对象的变化,必要时重新准备(重新编译)语句。
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