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  4. Insert Fails W/Unique Constraint

Insert Fails W/Unique Constraint

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  • R Offline
    R Offline
    rich_wenger
    wrote on last edited by
    #1

    Hi, I keep getting an error when I try to insert a new record into a table (SQL 2000) that has a column that I've configured as 'Unique Null Allowed'. I used Visual Studio (2003) IDE SQL Data Adapter Wizard to create the stored procedures, data adapter, and dataset using a simple select statement with one paramater. Everything works fine except the 'Unique Null Allowed' column requires a value on Insert or I get an error. What am I doing wrong?

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    • R rich_wenger

      Hi, I keep getting an error when I try to insert a new record into a table (SQL 2000) that has a column that I've configured as 'Unique Null Allowed'. I used Visual Studio (2003) IDE SQL Data Adapter Wizard to create the stored procedures, data adapter, and dataset using a simple select statement with one paramater. Everything works fine except the 'Unique Null Allowed' column requires a value on Insert or I get an error. What am I doing wrong?

      M Offline
      M Offline
      Mohamad Al Husseiny
      wrote on last edited by
      #2

      If you have a column which is Unique and Allow nulls then only one record will be allowed to have null value in this columns because if other record was inserted with null value in this unique columns it will not be allowed because this column is unique and other record already have null value in this column MCAD -- modified at 20:54 Friday 2nd September, 2005

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