AIX, oracle 8.1.7.2, all 3 tables compute statistics, first_rows
optimizer_mode
a simple 3 table join, joined on the appropriate columns, works fine.
add a fixed constant to the mix and poof, 2 merge-join cartesian.
Here is first query w/o the fixed value:
select T1.EVENT# c1,
I'd guess the optimizer is applying transitivity
to use your constant against all three tables
at the optimise stage, and something about the
specific value is fooling it.
What are the low_value and high_value
columns in user_tab_columns for the
three columns in the WHERE clause ?
Is EV000154
