Why join is faster than subquery?
Answer / Megha Sharma
Joining tables directly (using JOIN statements) can be faster than using subqueries because the database engine only needs to execute a single query to retrieve the required data. In contrast, subqueries require multiple queries to be executed sequentially, which can increase processing time.
| Is This Answer Correct ? | 0 Yes | 0 No |
Explain constraints in sql?
What is a trigger in pl/sql?
2. Select A.A from ( select 1 as from dual Union select 1 as from dual)A Full outer join ( select 1 B from dual Union select 2 B from dual)B On A.A=B.B
What is procedure explain with example?
Does sqlite need a server?
Can we alter stored procedure?
what is msql? : Sql dba
Why is %isopen always false for an implicit cursor?
What are the parts of a basic sql query?
What is normalization and types of normalization?
22 Answers Etisbew, F-TEC, Microsoft, TechProcess,
Why is a trigger used?
What are the ways on commenting in a pl/sql code?
Oracle (3253)
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)