MySql、PostGreSql中关于Char和VarChar的设定_postgre mchar-CSDN博客

网站介绍:文章浏览阅读843次。MySqlcreate tablecreate table table_char_test(charColumn char(3) null,varCharColumn varchar(3) null);insert into calcite.table_char_test values ('a','a');insert into calcite.table_char_test values ('ab','ab');insert into calcite.table_char__postgre mchar