Question

我有一个SQLBase-Database，我必须将VARCHAR列修改为LONG VARCHAR列。

由于无法在sqlbase中修改数据类型，我想创建临时列，将数据从varchar列切换到临时列，删除varchar列并重命名临时列。

以下是我的SQL语句：

ALTER TABLE NetworkShares ADD TEMP LONG VARCHAR;
UPDATE NetworkShares SET TEMP = Passwort;
ALTER TABLE NetworkShares DROP Passwort;
ALTER TABLE NetworkShares RENAME TEMP Passwort;

但是使用我的代码我得到了这个错误消息：

Error: 01602 TYP MBB Long must be set to bind variable

我有什么想法可以解决我的问题？

Answer 1

create table TMP_NetworkShares(
    <define all columns here as per NetworkShares>,
    PASSWORT long varchar not null
) pctfree 10;

insert into TMP_NetworkShares(
    <define all columns here as per NetworkShares>,
    PASSWORT ) select
    <define all columns here as per NetworkShares>,
    PASSWORT
        from NetworkShares;

drop table NetworkShares;

alter table TMP_NetworkShares rename table NetworkShares;

grant all on NetworkShares to PUBLIC;

SQLBase varchar col到long varchar col

1 个答案: