SELECT ？ INTO OUTFILE （as CSV）

在select 查询from 前加：

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INTO OUTFILE 'G:/wamp2/bin/mysql/mysql5.5.24/outfile/tst_position.txt'

  FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"'

  LINES TERMINATED BY '\n'

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导出csv

（在Windows ，用正斜线）

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also see mysqldump if not for temp table on-the-fly

also see http://stackoverflow.com/questions/9366875/mysql-insert-into-select-very-slow