In response to Atif Jung :
> If I have a table as follows:
> CREATE TABLE test1 (a char(5));
> how would I test that the 2nd character of column a is NOT the letter 'b' for
> In Informix I would say:
> SELECT count(*) FROM test1 where a <> 'b';
> In POSTGRES I get an error saying "ERROR: cannot subscript type character
> because it is not an array". I understand why I'm getting the error, but I'm
> not sure how I do what I want to do?
You can use the substring() - function:
test=# CREATE TABLE test1 (a char(5));
test=*# copy test1 from stdin;
Enter data to be copied followed by a newline.
End with a backslash and a period on a line by itself.
test=*# select count(1) from test1 where substring(a,2,1) = 'b';
test=*# select count(1) from test1 where substring(a,2,1) != 'b';
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|Next:||From: Atif Jung||Date: 2010-03-03 15:45:59|
|Subject: libpq or ESQL|
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|Subject: Re: Array or not Array?|