>Michael Beaucourt wrote:
>>
>> Hi all,
>>
>> I was wondering if it is possible to perform an inner select in MySQL.
>> I have a database called EMP and when i enter the following query, I
>> keep getting error 1064:
>>
>> select ename,deptno from emp where deptno in (select deptno from emp
>> where ename = 'SCOTT')
>>
>> The error message reads as follows:
>> ERROR 1064: You have an error in your SQL syntax near 'select deptno
>> from emp where ename='scott')' at line 1
>You can achieve it by writing this query in the following way:
>select a.ename,a.deptno from emp a,emp b where a.deptno=b.deptno and
>b.ename='SCOTT';
>MySQL doesn't support subselects;
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Hi,
Thanks for the answer. I already knew this was another solution for
the query, but I was actually just wondering if MySQL supported inner
select.
Now I have some other questions also (I'm having a test for school
tomorrow and school is using Oracle and I am using MySQL ;):
- In oracle you have outer joins, where you have to use a (+)
to find rows with null values and stuff like that. Any suggestions on
how to do this in MySQL?
- The function UNION to connect 2 select queries also doesn't
seem to work in MySQL. Any workarounds?
- In Oracle there is a very powerful
DECODE(expr1,searchstring1,replacestring1,[searchstring2,replacestring2],[default])
but apparently decode means something else in MySQL. Is there
a comparable function in MySQL?
Thanks.
Michael
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