Submitted by: @AlexPeshkoff

SFID: 658717#⁠
Submitted By: alexpeshkoff

Alter Table can't expand varchar column.
This bug is specific for firebird 1.5 - in firebird 1.0 this
works fine.
OS - Windows 2000
FIrebird 1.5 Alpha 5 (CVS date - 22-dec-2002)

For example:
Table TableName contains field ColName Varchar(40).
SQL operator:

ALTER TABLE TableName ALTER COLUMN ColName
TYPE VARCHAR(60)

fails with the following message:

Unsuccessful metadata update
New size specified for column X must be at least 40
characters
Statement: alter table tn alter column x type varchar(60)