Read data from sql database

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I have created two table Test, Test1. I want to read the data from it but it will give an error, Only one expression can be specified in the select list when the subquery is not introduced with EXISTS.

My query,

SQL

SELECT mono,
        Fax,
        (SELECT Color, Test
            FROM Test1),
        Name,
        Birthdate
        FROM Test;

Posted 5-Jan-15 18:46pm

Member 10168792

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Comments

Suvendu Shekhar Giri 6-Jan-15 1:06am

You can't specify more than one column in a sub query.
Problem is here
SELECT Color, Test FROM Test1
In this case, you also need to make sure it returns only a single row of data. May be you are missing a relation between these 2 tables in the subquery. Update your question with table structure and the relation.

2 solutions

Solution 1

Hi,
You are not allowed to select multiple columns in sub query.
If you want to select a perticulate column then you have to give some common condition in sub query.
you can right

SQL

SELECT mono,Fax,
        (SELECT Color FROM Test1 where Test1.id = Test.ID),
        Name, Birthdate
        FROM Test;

OR If you want more coumns then you can right :

SQL

SELECT mono,Fax,
       (SELECT Color + ',' + Test FROM Test1 where Test1.id = Test.ID),
        Name, Birthdate
        FROM Test;

Posted 5-Jan-15 21:07pm

Sumit Jawale

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Sumit Jawale · Accepted Answer · 2015-01-05T21:56:00