SQL Statement

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Hi

Below is the SQL statement I wrote but I get an error that says "ORDER BY clause (RecordNumber) conflicts with DISTINCT" and the RecordNumber is generated Automaticaly in my database. What might be the problem???

SQL

sql = "SELECT DISTINCT  membersTable.StudentNumber, membersTable.Name,membersTable.Surname,StudentMarks.SubjectCode,StudentMarks.DPMark,StudentMarks.ExamMark "
           + "FROM StudentMarks, membersTable, SubjectTable WHERE membersTable.StudentNumber = StudentMarks.StudentNumber AND StudentMarks.SubjectCode = SubjectTable.SubjectCode Order By RecordNumber ASC";

Posted 6-Sep-10 3:15am

Anele Ngqandu

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T.Saravanann · Answer 1 · 2010-09-06T03:28:00

Hi Anele.Ngqandu,

Small changes in your query

SQL

sql = "SELECT DISTINCT  membersTable.StudentNumber, membersTable.Name,membersTable.Surname,StudentMarks.SubjectCode,StudentMarks.DPMark,StudentMarks.ExamMark,tableName.RecordNumber  "
           + "FROM StudentMarks, membersTable, SubjectTable WHERE membersTable.StudentNumber = StudentMarks.StudentNumber AND StudentMarks.SubjectCode = SubjectTable.SubjectCode Order By RecordNumber ASC";

After got the output you can delete the column of RecordNumber.
Note: But in your query do not apply the distinct condition for multiple columns.

Cheers :)

Goutam Patra · Answer 2 · 2010-09-06T03:18:00

Solution 1

Because ORDER BY items must appear in the select list if SELECT DISTINCT is specified

Posted 6-Sep-10 3:18am

Goutam Patra

Updated 6-Sep-10 6:31am

v2

Comments

Anele Ngqandu 6-Sep-10 9:40am

Cool stuf!! thanx