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PHP

Posted by Graeme Porter
Graeme Porter
3,341 Points

Error in Treehouse page?

Hi - I'm completing the SQL / PHP course and I'm stuck on the SELECT statement... or rather it's stuck?

I enter "SELECT 'price', 'name' FROM products" and the result says I've failed and shows this error...

f1705544-0c3f-4631-a4c4-d5185a161a1f.rb:37:in eval': undefined methodto_a' for # (NoMethodError) from f1705544-0c3f-4631-a4c4-d5185a161a1f.rb:37:in eval' from f1705544-0c3f-4631-a4c4-d5185a161a1f.rb:37:in'

SO... how do I complete the module?

2 Answers

Alex Hedley
Alex Hedley
16,381 Points
Alex Hedley
Alex Hedley
16,381 Points

Try removing the single quotes from the field names:

"SELECT price, name FROM products"
Graeme Porter
Graeme Porter
3,341 Points
Graeme Porter
Graeme Porter
3,341 Points

OK, that got it. Odd thing to have to do though, no?

Anyhoo - all is well, cheers Alex.

Alex Hedley
Alex Hedley
16,381 Points
Alex Hedley
Alex Hedley
16,381 Points

Because you wrapped the field names in quotes it is then treating the value as a string literal instead of an actual fields.

Say you had a WHERE clause and you wanted it to be equal to some value you would wrap it there:

"SELECT price, name FROM products WHERE name='apple' "
Graeme Porter
Graeme Porter
3,341 Points

What a douche... work THEN beer next time. Cheers Alex!