Answer / swapnareddy

Type of sql statments are:
DDL:Data Defintion Language:create,alter,drop,truncate & rename
DML:Data Manipulation Language:insert,update,delete & merge
DRL/DQL:Data retrive/query Language:select
DCL:Data Contol Language:grant,revoke
DTL:Data Transition Language:commit,savepoint & rollback

Answer / sam kolta

SQL statements are classified into 6 categories:
1. Data Definition Language (DDL) Statements are:
- ALTER
- ANALYZE
- ASSOCIATE STATISTICS
- AUDIT
- COMMENT
- CREATE
- DISASSOCIATE STATISTICS
- DROP
- FLASHBACK
- GRANT
- NOAUDIT
- PURGE
- RENAME
- REVOKE
- TRUNCATE
- UNDROP
2. Data Manipulation Language (DML) statements are:
- CALL
- DELETE
- EXPLAIN PLAN
- INSERT
- LOCK TABLE
- MERGE
- SELECT
- UPDATE
3. Transaction Control Language (TCL) statements are:
- COMMIT
- ROLLBACK
- SAVEPOINT
- SET TRANSACTION
4. Session Control Language (SSCL) statements are:
- ALTER SESSION
- SET ROLE
5. System Control Language (SCL) Statements are:
- ALTER SYSTEM

6. EMBEDED SQL STATEMENTS

Answer / anil_abbireddy

DDL :data definition language
DML :data manuplation language
DCL :data control language
TCL :transaction control language
SCL :session control language

why we use nocopy?

2 Answers   Polaris,

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4. Select sum(A.salary) +sum(B.salary) as TOT_SAL from ( select LEVEL emp_id,level*100 salary,case when mod (level,2)=0then 2 else null end dept_id from dual connect by level<6 )A right outer join (select level emp_id ,level*200 salary ,case when mod (level,3)=0 then 2 else null end dept_id from dual connect by level<6)B On A.dept_id=B.dept_id And A.emp_id=B.emp-id;

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table name: prod there are three fields in the table that are 1.proddate 2.prodQty 3.model Day wise prodQty is stored in the table prod write a query to display total prodqty in the year 2004 april.

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