Explain the functions trim-length-count in oracle, Database Management System

Assignment Help:

Explain the following functions of Oracle with suitable examples:
(i) To_Char( ) (ii) Count( )
(iii) Trim( ) (iv) Length( )

Ans: (i) To_char( ): The TO_CHAR function converts a DATETIME, number, or NTEXT expression to a TEXT expression in a specified format. This function is typically used to format output data.

(ii) Count( ): The COUNT function returns the number of rows in a query.
The syntax for the COUNT function is:
SELECT COUNT (expression)
FROM tables
WHERE predicates;

(iii) Trim( ): In Oracle/PLSQL, the trim function removes all specified characters either from the beginning or the ending of a string.
The syntax for the trim function is:
trim( [ leading | trailing | both [ trim_character ] ] string1 )
leading - remove trim_string from the front of string1.
trailing - remove trim_string from the end of string1.
both - remove trim_string from the front and end of string1.

(iv) Length( ): In Oracle/PLSQL, the length function returns the length of the specified string.
The syntax for the length function is:
length(string1)
string1 is the string to return the length for. If string1 is NULL, then the function returns
NULL.


Related Discussions:- Explain the functions trim-length-count in oracle

MYSQL, i have a homework assignment identical to one you have listed

i have a homework assignment identical to one you have listed

Give short note on the following terms- dirty pages and etl, Give short not...

Give short note on the following terms:Dirty pages and ETL a.) Dirty pages. These are buffer pages which comprise modifications which haven't been written to disk. b.

Database system design and Implementation, Consider a typical sales invoice...

Consider a typical sales invoice that would include the following information. Design a single table to hold all of the information required to store an invoice including this info

Project, write a database program for concurrency transaction in a bank

write a database program for concurrency transaction in a bank

Implementation of association as an object, Implementation of association a...

Implementation of association as an object Implement as a separate association object, independent of either class, as in Figure. An association object is a group of pairs

What is called as an n-way merge, What is called as an N-way merge? The...

What is called as an N-way merge? The merge operation is a generalization of the two-way merge used by the standard in-memory sort-merge algorithm. It merges N runs, so it is k

Define one-way associations using pointers, One-way Associations If an...

One-way Associations If an association is only traversed in single direction, then it is known as one-way association. It is implemented as a pointer or an attribute which con

Define the phases of two phase locking protocol, Define the phases of two p...

Define the phases of two phase locking protocol Growing phase: a transaction may get locks but not release any lock. Shrinking phase: a transaction might be release locks bu

What is data defination language, What is DDL? Make a list of commands with...

What is DDL? Make a list of commands with short description used in DDL Ans: Data Definition Language that is abbreviated as DDL is a computer language for defining data struct

Group by clauses-data manipulation language, Group By clauses  • It is ...

Group By clauses  • It is used to group database tuples on the basis of definite common attribute value like as employees of a department. WHERE clause still can be used

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd