SELECT DISTINCT problems

Поиск
Список
Период
Сортировка
От SCAHILL KEVIN
Тема SELECT DISTINCT problems
Дата
Msg-id 992C0C12C388D411B264009027AA341804258E7F@gabriel.ul.ie
обсуждение исходный текст
Ответы Re: SELECT DISTINCT problems  (Tom Lane <tgl@sss.pgh.pa.us>)
Список pgsql-sql
Hi there,
I'm having a lot of trouble with one sql statement and I wonder can you
help.

I My problem is the following...there are two field name in the the table
named LecturerName and Projectcode. Each ProjectCode vulue is unique within
the table but there can be many entries in the table with the same
LecturerName.

I would like to pull each distinct value of LecturerName with any one
corresponding ProjectCode value, it does not matter what the ProjectCode
value is, but all attemps at this have failed so far.

I have tried this but it does not work:

Set rsLecturers = Server.CreateObject("ADODB.Recordset") 
sqlLect = "Select LecturerName, MIN(ProjectCode) from tblSuggestions WHERE
LecturerName IN ( SELECT DISTINCT LecturerName FROM tblSuggestions)" 
rsLecturers.Open sqlLect, Conn, 3, 3 

I get this error when I try to run this:
[Microsoft][ODBC Microsoft Access Driver] You tried to execute a query that
does not include the specified expression 'LecturerName' as part of an
aggregate function. 


I am trying to put the results of this query into a recordset and I am using
an accessdatabase 
Thanks in advance,
Kevin.


В списке pgsql-sql по дате отправления:

Предыдущее
От: Jan Wieck
Дата:
Сообщение: Re: Need your help
Следующее
От: Tom Lane
Дата:
Сообщение: Re: SELECT DISTINCT problems