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check constraint in sql

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check constraint in sql, ckeck constraint

ankur	8 May, 2005 - 11:00 PM Post #1
New D.I.C Head Joined: 24 Apr, 2005 Posts: 2	i want to create a check constraint in sql to validate field contains only values such as 'A1234' etc the first character of value is always character and all other are numeric in oracle 8i. i have tried check( id like '[A-Z][0-9][0-9][0-9][0-9]' ) please help me! This post has been edited by ankur: 10 May, 2005 - 09:10 PM
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Amadeus	RE: Check Constraint In Sql 9 May, 2005 - 05:42 AM Post #2
g++ -o drink whiskey.cpp Joined: 12 Jul, 2002 Posts: 12,351 Thanked: 51 times Dream Kudos: 25 My Contributions	While SQL as a whole supports many standard options, some flavours of SQL software support additonal, helpful functions...can you specify what db software you are using (MySQL, SQLServer,etc...)?
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blue basil	RE: Check Constraint In Sql 9 Nov, 2007 - 03:21 PM Post #3
New D.I.C Head Joined: 9 Nov, 2007 Posts: 1 My Contributions	[I think you could use the substr and is numeric functions in oracle like this CODE Is_numeric(substr(X,first_position_of_the_char,last_position_of_the_char));
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