How to execute a scalar query with oci8 and ruby
Question
I'd like to select a next id from a sequence in oracle using oci8 and ruby. What's the easist way of doing so? Example wrong code:
id = @conn.exec( 'Select NEXT_ID.NEXTVAL from dual' )
.exec returns a cursor. Is there an easy way of just getting the one value I need from the exec or similar method?
Solution
@conn.exec('Select NEXT_ID.NEXTVAL from dual') {|row| id = row[0]}
You can also do
id = @conn.exec('Select NEXT_ID.NEXTVAL from dual').fetch[0]
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