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

0 vote338 views1 answer
Run mssql server terminal
SQL
5 votes357 views2 answers
Create table mysql example auto_increment
SQL
-1 vote353 views1 answer
SQL query to convert DD/MM/YYYY to YYYY-MM-DD
SQL
4 votes314 views1 answer
Update table from another table oracle
SQL
1 vote334 views2 answers
Restart identity cascade
SQL
0 vote327 views1 answer
Add timestamp column to existing table ms sql server
SQL
4 votes337 views3 answers
Create database in mySQL
SQL
0 vote322 views2 answers
Sqlite
SQL
9 votes351 views5 answers
Laravel to sql
SQL
0 vote348 views1 answer
T-SQL Create Trigger
SQL