mysql关键字AFTER

myql 关键字after表示在某列的后面增长一列。html

示例入下code

USE database1

ALTER TABLE table1 ADD COLUMN `col_a` text COLLATE utf8_bin AFTER `col_x`,
 ADD COLUMN `col_b` text COLLATE utf8_bin AFTER `col_a`
ADD COLUMN `col_c` text COLLATE utf8_bin AFTER `col_b`
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