Oracle leftmost characters

-- For Oracle only

-- syntax 
SUBSTR(<main-string>,1,<number-of-characters>)

-- example 
SUBSTR('Useless stuff',1,10) -- OUTPUT: Useless st

-- practical example
SELECT SUBSTR('Useless stuff',1,10)
FROM DUAL;

Subtr Oracle ?

/*Using SUBSTR in Oracle (Example from hackerrank.com): */

/*Simple select query...*/ 
SELECT DISTINCT city 
FROM station 

/*Using WHERE and SUBSTR to find (distinct) cities in station table that begin 
as well as end with a vowel.*/ 
WHERE SUBSTR(city,1,1) IN ('A','E','I','O','U') 
	AND substr(city,-1) IN ('a','e','i','o','u'); 

/*Parameters for SUBSTR (Substring) in order are as follows: 
String, Start, Length.*/

Source: hackerrank.com

Similar codes

34 votes247 views5 answers
Oracle alter table add column
SQL
0 vote215 views1 answer
Import sql mysql ubuntu
SQL
0 vote250 views1 answer
Postgresql delete limit
SQL
7 votes243 views1 answer
Return insert results in POSTGRESQL
SQL
0 vote249 views1 answer
Transaction database with php
SQL
1 vote252 views1 answer
How to lock table in mysql
SQL
2 votes217 views1 answer
Sql find missing values between two tables
SQL
0 vote251 views2 answers
Mysql set foreign_key_checks=0
SQL
0 vote276 views1 answer
How to define a save method in ruby for sqlite3 databases
SQL
0 vote253 views1 answer
SQL server datetime compare
SQL