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Error Code: 1175. You are using safe update mode and you tried to update a table without a WHERE that uses a KEY column To disable safe mode, toggle the option in Preferences -> SQL Editor and reconnect.

mysql增加列，修改列名、列属性，删除列语句 mysql修改表名，列名，列类型，添加表列，删除表列   alter table test rename test1; --修改表名   alter table test add  column name varchar(10); --添加表列    www.2cto.com  alter table test d

update语法Single-table语法：UPDATE [LOW_PRIORITY] [IGNORE] tbl_name SET col_name1=expr1 [, col_name2=expr2 ...] [WHERE where_definition] [ORDER BY ...] [LIMIT row_count]Multip