select * from Table_foo where column_bar = 'x'
select * from Table_foo where column_bar in ('x')
Do these two queries perform similarly?
select * from Table_foo where column_bar = ‘x’ select * from Table_foo where column_bar
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select * from Table_foo where column_bar = 'x'
select * from Table_foo where column_bar in ('x')
Do these two queries perform similarly?
Yes, Oracle is clever enough to see that there is no difference and will use the same access path.
If in doubt, take a look at the execution plan.