>On Fri, Jul 08, 2005 at 12:08:41PM -0400, Ying Lu wrote:
>
>
>>CREATE INDEX idx_t1 ON test (col1 || '-' || col2);
>>
>>May I know is it possible and how I may create index for the expression
>>such as "col1 || '-' || col2" for a table please?
>>
>>
>
>
>"The syntax of the CREATE INDEX command normally requires writing
>parentheses around index expressions, as shown in the second
>example...."
>
>That second example is exactly what you're trying to do:
>
>CREATE INDEX people_names ON people ((first_name || ' ' || last_name));
>
>
This is exactly what I want. I missed a pair of "()" :( . That is why I
got an error.
Thank you very much.
- Emi