The SQL compiler USES them to transform a statement into a more optimized form, thus improving the access path to the required data.
SQL编译器使用信息约束将语句转化成更优的形式，从而改善对所需数据的访问路径。
The SQL compiler USES query optimization to select the best performing access path for any given SQL statement (within a reasonable amount of time, of course).
SQL编译器使用查询优化来为任何给定的sql语句选择表现最好的访问路径(当然，这要在合理的时间内)。
This is actually what the statement looks like once the compiler converts it internally to a normal for loop.
以下是编译器把该循环转换成普通的for循环之后，语句实际看起来的样子。
If the compilation environment or table statistics have changed when the explain statement is issued, the compiler may generate a different access plan.
如果编译环境或表统计信息在explain语句执行时已经发生改变，那么编译器可能会生成一个不同的访问计划。
You do this using the #pragma export statement in your C code, or by specifying the EXPORTALL C compiler option.
这需要在C代码中使用 #pragmaexport语句，或者指定EXPORTALL C编译器选项。
The query compiler expands view definitions into the main statement block, which might result in a more complex statement.
查询编译器将视图定义展开成主语句块，从而产生一个更复杂的语句。
It will only be used by the SQL compiler to optimize the federated statement.
它只是被SQL编译器用于优化联邦语句。
The JSP compiler includes the referenced file instead of the include statement.
JSP编译器会包含所引用的文件，而不包含 include 语句。
The statement heap is used as a workspace for the SQL compiler during compilation of an SQL statement.
在sql语句的编译期间，语句堆(statement heap)用作SQL编译器的工作空间。
The statement heap is used as a workspace for the SQL compiler during compilation of an SQL statement.
在sql语句的编译期间，语句堆(statement heap)用作SQL编译器的工作空间。
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