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>;
Answers were Sorted based on User's Feedback
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
| Is This Answer Correct ? | 0 Yes | 0 No |
What is the most common sql injection tool?
Two Methods of retrieving SQL?
7 Answers Atiric Software, Microsoft, Oracle, TCS, Wipro,
What is mutating error?
How many types of indexes are there in sql?
What is clustered and non-clustered indexes?
What is update query?
Why is sql important?
i don't want the message as 14 rows updated just it should update what it will do
what is the functionality of the function htmlentities? : Sql dba
What is normalisation and its types?
How to Declare Fixed Length String Value In PL SQL
Is primary key a clustered index?
Oracle (3259)
SQL Server (4518)
MS Access (429)
MySQL (1402)
Postgre (483)
Sybase (267)
DB Architecture (141)
DB Administration (291)
DB Development (113)
SQL PLSQL (3330)
MongoDB (502)
IBM Informix (50)
Neo4j (82)
InfluxDB (0)
Apache CouchDB (44)
Firebird (5)
Database Management (1411)
Databases AllOther (288)