Concatenating columns in a query

Hello,
I am working on a SQL Query for one of my reports.
Which has four columns c1,c2,c3,c4. The value of Each of these columns is coming from an individual Subquery.
How can I combine these to display an output in a report.
Please advise,.
Thanks
Fm

Hi,
If c1, c2, c3 and c4 are all strings, then the way to concatenate them all together is
c1 || c2 || c3 || c4It doesn't matter where the strings come from: whether they are the results of scalar sub-queries (which, I believe is what you are saying they are), columns, literals, function results, or anything else. You can concatenate the actual expressions that produce the strings, for example
(SELECT ...)        -- a scalar sub-query
|| (SELECT ...)     -- another scalar sub-query
|| (SELECT ...)     -- another scalar sub-query
|| (SELECT ...)     -- another scalar sub-queryBut there might be a more efficient way to get the same results. If you'd like help, post a little sample data (CREATE TABLE and INSERT statements) and the results you want from that data.
In Oracle, you don't have to worry about some of the strings being NULL. "x || NULL" is x.

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Peter vd Zwan wrote:
try this:Grouping by records will not produce correct results:
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