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Computed By Fields

Discuss Computed By Fields in the Firebird SQL Development forum on Dev Shed.
Computed By Fields Firebird SQL Development forum discussing administration, Firebird SQL syntax, or other Firebird SQL-related topics. Firebird is the evolution of Borland's Interbase product.

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  #1  
Old February 13th, 2005, 08:03 PM
Alexandre Kogut Alexandre Kogut is offline
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Unhappy Computed By Fields
How can i change the expression of a "computed by" field without dropping it? ALTER TABLE is not working...
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  #2  
Old February 15th, 2005, 12:28 AM
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SilverDB SilverDB is offline
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try UPDATE TABLE SET ...
I'm not sure it works cause I can't test it right now.
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Old February 15th, 2005, 06:56 AM
upscene upscene is offline
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Actually, you cannot via a normal ALTER TABLE statement.

You can use Database Workbench to do it ( www.upscene.com ), it uses a direct system tables update to do this.

With regards,

Martijn Tonies
Database Workbench - developer tool for InterBase, Firebird, MySQL & MS SQL Server
Upscene Productions
http://www.upscene.com
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Martijn Tonies
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Upscene Productions
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Old February 15th, 2005, 07:09 PM
Alexandre Kogut Alexandre Kogut is offline
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Quote:
Originally Posted by SilverDB
try UPDATE TABLE SET ...
I'm not sure it works cause I can't test it right now.


No, it doesnŽt. The Update command can only set new values to fields, not change an expression. Thank you, anyway.
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Old February 15th, 2005, 07:57 PM
Alexandre Kogut Alexandre Kogut is offline
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Quote:
Originally Posted by upscene
Actually, you cannot via a normal ALTER TABLE statement.

You can use Database Workbench to do it ( www.upscene.com ), it uses a direct system tables update to do this.


IŽve just downloaded it, and it really works! IŽll be doing some other tests during the trial period, but it seems to be a very nice tool. Thank you.
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Old February 17th, 2005, 03:36 AM
fikret fikret is offline
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Quote:
Originally Posted by Alexandre Kogut
... but it seems to be a very nice tool. Thank you.


Sure it is VERY NICE TOOL

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Fikret Hasovic http://fikret.fbtalk.net

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