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

2 votes178 views1 answer
While loop sql
SQL
0 vote182 views1 answer
Mysql create table like
SQL
0 vote289 views1 answer
How to show current database in mysql
SQL
0 vote283 views1 answer
Sqlite woth cmake
SQL
1 vote196 views1 answer
Insert value to new table by joining 2 different tables
SQL
0 vote237 views1 answer
Mysql sum per week
SQL
7 votes196 views1 answer
Return insert results in POSTGRESQL
SQL
24 votes217 views4 answers
Delete db postgres
SQL
0 vote193 views1 answer
Oracle lower in where clause
SQL
0 vote201 views1 answer
Connect postgresql using a connection string
SQL