Often developers will add many fields to classes without realizing that each int field they add to a class will be multiplied by a large factor (the number of instances) at run time.
通常，开发人员会为类添加很多字段，而未意识到为类所添加的每个整型字段都会在运行时与一个较大的因数（实例数量）相乘。
Run an SQL script to build the indexes for all multiline text fields that will be used for queries.
运行一个sql脚本来为所有将要被查询的多行文本域建立索引。
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