what is sql optimization
Answer / anupam bhatt
SQL optimization or tuning is the process to improve upon your sql queries to make them more efficient and avoid common pitfalls like multiple database round trips etc. Basically do more work with fewer queries to make the application fast and manageable.
This can be achieved by various ways like joining multiple queries in to one to avoid multiple network round trips, add indexes to the tables which are frequently accessed to reduce the turnaround time, fetch only the required data instead of a generic query getting all of the data of the table etc.
| Is This Answer Correct ? | 2 Yes | 2 No |
How can analyze query after generating explain plan ?
a. Can you delete data from a View. b. If Yes, can you delete it if there are multiple tables c. If No, can you delete if there is single source table which is joining.
How many types of tables are there?
SQL Tuning, Oracle Server 10g: Why is the following hint invalid? SELECT /*+ first_rows parallel(table_name,paral_number)*/
What are database links used for?
How do I enable sql encryption?
in sql table following column r there i want find 1st paid ,2nd paid,3rd paid date for same |service_type|date |vehicle_no| |------------|------|_---------| |paid |23 jan|MH12H2007 | | | | | |paid |26 feb|MH12H2007 | | | | | | | | | |paid |28 mar|MH12H2007 | i want o/p like below vehicle no| 1st paid date | 2nd paid date|3rd paid |latest paid date| pls help me out
what is the difference between delete and truncate statement in sql? : Sql dba
What is the order of sql select?
How can we connect an Android App to an Oracle database and use the PL/SQL procedural code?
How to change a value of the field ‘salary’ as 7500 for an employee_name ‘john’ in a table employee_details?
Types of locks in database ?
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)