LIKE with % on column names

Question

Here is my query that results in a syntax error:

SELECT *  FROM account_invoice,sale_order WHERE sale_order.name LIKE %account_invoice.origin% 

The account_invoice.origin field contains the text of sale_order.name, plus other text as well, so I need to match sale_order.name string anywhere in the account_invoice.origin string.

I'm using PostgreSQL 8.4.

Answer 1

Try this

SELECT *  FROM account_invoice,sale_order WHERE sale_order.name LIKE '%'  || account_invoice.origin || '%' 

% needs single quote because the pattern is a string.

|| is the operator for concatenation.