how to concatenate multiple fields from database in single RpttextBox in vb6?

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Hello,
[1] I have created one data report(student report).
[2] which shows records of students as per the fields selected from various combos situated at form2 for that I wrote a record set (bunch of sql statements) fired on command_click and it works well.....
[3] Now I am having fields like: FIRST_NAME,MIDDLE_NAME,LAST_NAME in database table
[4] For that I have to take one RptTextBox as FULLNAME which is not included in table but I have to concatenate these 3 fields to view FULLNAME......
[5] I don't know how to do so.......

VB

Private Sub CmdReport_Click()
Dim STR As String
    STR = Search1
   sql = "SELECT  A.ROLLNO,A.FIRST_NAME,A.MIDDLE_NAME,A.LAST_NAME,A.ADDRESS,A.GRADE,B.DIV,A.BLOOD_GROUP,C.HOUSE,A.DATE_OF_BIRTH,A.TRANSPORT,A.SNAME,A.MEAL,A.RUTNO FROM STUDENT_RECORD_DATABASE A,DIVISION B,HNM C WHERE A.DIVID=B.DIVID AND A.HID=C.HID AND " & STR & ""
   Set rs = cn.Execute(sql)
End If
   Set DataReport2.DataSource = rs
   DataReport2.Show
   End Sub

Please help

Posted 7-Feb-13 22:17pm

surkhi

Updated 7-Feb-13 22:21pm

CHill60

v2

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Chris Reynolds (UK) · Accepted Answer · 2013-02-07T22:25:00

I think your code segment is incomplete but I would suggest you could combine fields in your query to make a new columns so:

sql = "SELECT A.ROLLNO, A.FIRST_NAME,A.MIDDLE_NAME,A.LAST_NAME,A.FIRST_NAME || ' ' || A.MIDDLE_NAME || ' ' || A.LAST_NAME AS FULLNAME A.ADDRESS, A.GRADE, B.DIV, A.BLOOD_GROUP, C.HOUSE, A.DATE_OF_BIRTH, A.TRANSPORT, A.SNAME, A.MEAL, A.RUTNO FROM STUDENT_RECORD_DATABASE A,DIVISION B,HNM C WHERE A.DIVID=B.DIVID AND A.HID=C.HID AND " & STR & ""

You can then bind to the column FULLNAME You need to worry about rows where one or all of the names are 'null' in the database and also you will get some odd spacings if thet row has blanks for one of the name components but there are ways of dealing with that which can explore for yourself.

There's a good page on this at:

http://luckylarry.co.uk/programming-tutorials/oracle/join-columns-concatenate-strings-in-oracle-plsql-mysql/[^]

CHill60 · Accepted Answer · 2013-02-07T22:30:00

Solution 2

SELECT REPLACE(A.FIRST_NAME + ' ' || COALESCE(A.MIDDLE_NAME, '') || ' ' || A.LAST_NAME, '  ', ' ') AS FULLNAME

Explanation:

|| is the concatenation operator[^] (in SQL Server I would have used + )

COALESCE[^] handles any cases where MIDDLE_NAME is null and replaces it with and empty string

The REPLACE[^] around the outside also handles the missing MIDDLE_NAME situation and changes the double space that would occur with a single space to make everything nice and tidy

Posted 7-Feb-13 22:30pm

CHill60

Comments

surkhi 8-Feb-13 4:38am

sir can I write this code in my main sql as given above?
or sh'd write another one?

CHill60 8-Feb-13 4:42am

just put it in your main sql ... I only did it this way because I was being lazy ... See Chris' solution for the full SQL.

surkhi 8-Feb-13 4:49am

SIR, but when there were 3 RptTextBoxes
I set their data field as FIRST_NAME,MIDDLE_NAME,LAST_NAME respectively but now I have only 1 RptTextBox so what sh'd I set it's data field value???
I tried with first_name & " " & middle_name & " " & last_name
but error shows field not found.......

Chris Reynolds (UK) 8-Feb-13 4:54am

You should set it to FULLNAME as I suggested in my sample. Basically you are creating a pseudo-column with your SQL so you can set your RptTextBox to point to that new column

surkhi 8-Feb-13 4:51am

If I left it's data field empty then also error:
empty field not found
sir please suggest something...

CHill60 8-Feb-13 4:59am

See Chris' comment above

surkhi 8-Feb-13 5:06am

BUT I don't have fullname column in my table just have to show on data report...
and at data report design I have to fill some data field and
FIRST_NAME+" " +MIDDLE_NAME +" "+ LAST_NAME
is not working.........

CHill60 8-Feb-13 5:09am

If you put AS FULLNAME in the sql you will have a "psuedo" column in the SQL that is returned. On your report you need to have a field FULLNAME as well. They will match up. You don't have to have the column on the table if you use AS

Chris Reynolds (UK) 8-Feb-13 5:49am

You don't have a FULLNAME column in your table but the line of code I gave you in my solution means that your C# 'sees' a FULLNAME column in the result set that comes back from SQL and so your data field can be set to have a source of 'FULLNAME'

surkhi 8-Feb-13 6:23am

KTHANX SIR