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http://issues.apache.org/jira/browse/DDLUTILS-118?page=comments#action_12422923
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Niklas Ekman commented on DDLUTILS-118:
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I'm using the DdlUtils trunk, newly checked out and built with ant. And also,
I've checked that it is the
org.apache.ddlutils.platform.postgresql.PostgreSqlBuilder that's used when I
call PlatformFactory.createNewPlatformInstance(dataSource) (I called
platform.getSqlBuilder().getClass().getName() to find out).
According to the help file for PostgreSQL 8.1 the following statement is used
for modifying columns:
ALTER TABLE [ ONLY ] name [ * ]
action [, ... ]
where action is one of:
....
ALTER [ COLUMN ] column TYPE type [ USING expression ]
.....
Examples
To change the types of two existing columns in one operation:
ALTER TABLE distributors
ALTER COLUMN address TYPE varchar(80),
ALTER COLUMN name TYPE varchar(100);
This is directly from the help file, I've stripped away stuff that's not
important.
> Modifying columns generates wrong SQL statement
> -----------------------------------------------
>
> Key: DDLUTILS-118
> URL: http://issues.apache.org/jira/browse/DDLUTILS-118
> Project: DdlUtils
> Issue Type: Bug
> Components: Core - PostgreSql
> Environment: PostgreSQL Database Server 8.1, Windows XP SP2, JDBC
> driver version 8.1-407 JDBC3
> Reporter: Niklas Ekman
> Assigned To: Thomas Dudziak
> Priority: Minor
>
> When changing a column size the following SQL statement is generated:
> ALTER TABLE testtable MODIFY test VARCHAR(100)
> But according to the PostgreSQL manual it should look like
> ALTER TABLE testtable ALTER COLUMN test TYPE VARCHAR(111)
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