Operator LIKE with SCAPE

Question

I'm using the operator LIKE on a query with the ESCAPE option to.
I really dont understund according to the manual, the meaning of the ESCAPE commmand option.
I apreciated if somebody could explaim me this option and an simple example of how to use it.
Thanks a lot

Answer 1

if you have this data
<pre>
num val
1 hello_there
2 hello there
3 hellomthere
4 hello%there
5 hello you there
select * from table where val like 'hello%there'
will return all rows
select * from table where val like '%hello\%there' escape '\'
will return only row 4
select * from table where val like 'hello_there'
will return rows 1, 2, 3 and 4
select * from table where val like 'hellox_there' escape 'x'
will return row 1
-d