BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Determining Blob field size          BorlandTalk.com Forum Index -> Delphi Databases (SQL Servers) View previous topic :: View next topic   Author Message Fabio Dalle Ave Guest Posted: Tue Jul 13, 2004 1:17 pm    Post subject: Determining Blob field size Hi, I need to determine the size of the contents of blob fields stored it a table. I would like to do this server side, without having to loop through each record, retrieving the content of the blob field and finding its size (this is *MOST* inefficient, especially in a WAN environment). I need both MS SQL Server 2000 and Firebird 1.5 support. Is there any server function to do that? I guess I could write a delphi UDF for firebird somehow to do this, but I wouldn't know how to do so in MS SQL Server. Thanks for any clue. Fabio Back to top Eric Hill Guest Posted: Tue Jul 13, 2004 2:50 pm    Post subject: Re: Determining Blob field size Oracle uses LENGTH(blob_field) to give BLOB size. I'm sure SQL Server and IB have something similar. Eric Back to top Alain Quesnel Guest Posted: Tue Jul 13, 2004 3:32 pm    Post subject: Re: Determining Blob field size Use DATALENGTH() for MSSQL 2000. Returns the size in bytes. -- Alain Quesnel [email]alainsansspam (AT) logiquel (DOT) com[/email] www.logiquel.com "Fabio Dalle Ave" <fdalleave_no_spam*@softsys.it> wrote Quote: Hi, I need to determine the size of the contents of blob fields stored it a table. I would like to do this server side, without having to loop through each record, retrieving the content of the blob field and finding its size (this is *MOST* inefficient, especially in a WAN environment). I need both MS SQL Server 2000 and Firebird 1.5 support. Is there any server function to do that? I guess I could write a delphi UDF for firebird somehow to do this, but I wouldn't know how to do so in MS SQL Server. Thanks for any clue. Fabio Back to top Fabio Dalle Ave Guest Posted: Tue Jul 13, 2004 4:25 pm    Post subject: Re: Determining Blob field size Alain Quesnel wrote: Quote: DATALENGTH() Awesome!!! Now... if anybody has a clue about Firebird ;) Thanks guys!! Back to top Aage Johansen Guest Posted: Tue Jul 13, 2004 9:34 pm    Post subject: Re: Determining Blob field size Fabio Dalle Ave wrote: Quote: Hi, I need to determine the size of the contents of blob fields stored it a table. I would like to do this server side, without having to loop through each record, retrieving the content of the blob field and finding its size (this is *MOST* inefficient, especially in a WAN environment). I need both MS SQL Server 2000 and Firebird 1.5 support. Is there any server function to do that? I guess I could write a delphi UDF for firebird somehow to do this, but I wouldn't know how to do so in MS SQL Server. Thanks for any clue. I think there is an API call for Fb/1.5 (I've never used the API myself). If no one answers here, take a trip to the Firebird support NG. Start here: http://www.ibphoenix.com/main.nfs?a=ibphoenix&s=1089745825:22319&page=ibp_groups -- Aage J. Back to top Fabio Dalle Ave Guest Posted: Wed Jul 14, 2004 7:41 am    Post subject: Re: Determining Blob field size Aage Johansen wrote: Quote: Fabio Dalle Ave wrote: Hi, I need to determine the size of the contents of blob fields stored it a table. I would like to do this server side, without having to loop through each record, retrieving the content of the blob field and finding its size (this is MOST inefficient, especially in a WAN environment). I need both MS SQL Server 2000 and Firebird 1.5 support. Is there any server function to do that? I guess I could write a delphi UDF for firebird somehow to do this, but I wouldn't know how to do so in MS SQL Server. Thanks for any clue. I think there is an API call for Fb/1.5 (I've never used the API myself). If no one answers here, take a trip to the Firebird support NG. Start here: http://www.ibphoenix.com/main.nfs?a=ibphoenix&s=1089745825:22319&page= ibp_groups Thanks. I was able to find a BlobSize function is the FreeUDFLib package. I just used that and it seems to work just fine. Thanks for the hint. 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