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Dynamics 365 Community / Forums / Microsoft Dynamics AX (Archived) / AX creates columns wit...
Microsoft Dynamics AX (Archived)

AX creates columns with differing collation in SQL Database

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Posted on by Community Member

Hi there,

as I read the Dynamics 2012 System Requirements Whitepaper, SQL-Server collation Latin1_General_CI_AS should be fine for a German System. Unfortunately, there seem to be columns, where AX uses SQL_Latin1_General_CP1_CI_AS regardless of the Server collation and this leeds to error messages when trying to join tables.

Gino Deschênes basically had the same question some time ago here.

Can anyone confirm this as "normal" behaviour requiring some workaround or is there some other recommendation we might have missed?

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  • Vilmos Kintera Profile Picture
    Vilmos Kintera 46,149 on at

    Hi

    I can confirm that our Ax 2012 R1 production SQL database has the same layout as yours including the discordant collations, however everything is working fine.

    Can you please explain the situation and maybe give an example, where you would get error messages if you construct SQL Queries / Statements inside AX and get errors for the joins?

    You could construct direct SQL statements, or Views with computed columns in AX and force using a specific collation, so a join would not be broken in T-SQL using the COLLATE DATABASE_DEFAULT keyword after the column. Here is the documentation: msdn.microsoft.com/.../ms184391.aspx

  • Community Member Profile Picture
    Community Member on at

    Hi and thanx so far!

    The following select returns a SQL error along the lines of "collation conflict":

       SysEDTMigrationTable table;

       SysModelElement sme;

       select table

           join sme

               where   sme.Name == table.Name;

  • Vilmos Kintera Profile Picture
    Vilmos Kintera 46,149 on at

    Yes I can confirm the error exists. Also I wrote some code to see if it works as a Direct SQL statement from AX, that you need to run in a class, and that fails as well. The same executed as a T-SQL in SSMS works fine, so it is quite intriguing.

    server static void run()
{
    SysEDTMigrationTable            edtMigrationTable;
    SysModelElement                 sysModelElement;

    SqlStatementExecutePermission   sqlStatementExecutePermission;
    Connection                      connection;
    str                             statement;
    Statement                       sqlStatement;
    ResultSet                       retResultSet;

    // Error if DB collation is not SQL_Latin1_General_CP1_CI_AS
    select
        generateonly
        firstOnly Name from edtMigrationTable
        join sysModelElement
        where  sysModelElement.Name         == edtMigrationTable.Name
            && sysModelElement.ElementType  == UtilElementType::Table;

    statement = edtMigrationTable.getSQLStatement();
    statement = strReplace(statement, '=T1.NAME', '=T1.NAME COLLATE DATABASE_DEFAULT');
    //info(statement);
    
    connection      = new Connection();
    sqlStatementExecutePermission = new SqlStatementExecutePermission(statement);
    sqlStatementExecutePermission.assert();
    sqlStatement    = connection.createStatement();
    retResultSet    = sqlStatement.executeQuery(statement);

    if (retResultSet)
    {
        while (retResultSet.next())
        {
            info(retResultSet.getString(1));
        }
    }

    sqlStatement.close();
    CodeAccessPermission::revertAssert();
}

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