CSV的样例中Select ... into outfile...是不带字段名的，只导出数据，所以需要自己想另外的办法实现，这里有一个笨招，自己构造一个字段列，示例如下：
1，创建测试表数据 CREATE TABLE test.c SELECT 1 AS pid,1 AS item,15.0 AS wgt UNION ALL SELECT 1 AS pid,2 AS item,20.0 AS wgt UNION ALL SELECT 1 AS pid,3 AS item,30.0 AS wgt UNION ALL SELECT 1 AS pid,4 AS item,29.0 AS wgt; SELECT * FROM test.c;
SELECT * FROM ( SELECT ‘pid‘ AS pid,‘item‘ AS item,‘wgt‘ AS wgt UNION ALL SELECT * FROM test.c )a INTO OUTFILE ‘/tmp/c.csv‘ FIELDS TERMINATED BY ‘,‘ OPTIONALLY ENCLOSED BY ‘"‘ LINES TERMINATED BY ‘\n‘;
执行如下： mysql> SELECT * FROM ( -> SELECT ‘pid‘ AS pid,‘item‘ AS item,‘wgt‘ AS wgt -> UNION ALL -> SELECT * FROM test.c -> )a INTO OUTFILE ‘/tmp/c.csv‘ -> FIELDS TERMINATED BY ‘,‘ -> OPTIONALLY ENCLOSED BY ‘"‘ -> LINES TERMINATED BY ‘\n‘; Query OK, 5 rows affected (0.00 sec)
