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In a table i have columns A,B,C and i have a composite index
on columns A,B if so will the following query uses index or
not?
SELECT sal,name
FROM <table_name>
WHERE A=<value> AND B=<value> AND C=<value>;
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Answer / dinesh
Table Access (BY INDEX ROWID)
Filter predicates C=
INDEX(UNIQUE SCAN) A= B=
Here we use "AND" operator that query used index
if we used "OR" its not used Index scan
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