left() in sql
#LEFT(string, number_of_chars)
#Extract 3 characters from a string (starting from left):
SELECT LEFT('SQL Tutorial', 3) AS ExtractString;
#Result -> SQLleft() in sql
#LEFT(string, number_of_chars)
#Extract 3 characters from a string (starting from left):
SELECT LEFT('SQL Tutorial', 3) AS ExtractString;
#Result -> SQLsql right characters
-- For Oracle only
-- syntax
SUBSTR(<main-string>,-<number-of-characters>)
-- example
SUBSTR('Useless stuff',-9) -- OUTPUT: ess stuff
-- practical example
SELECT SUBSTR('Useless stuff',-9)
FROM DUAL;Copyright © 2021 Codeinu
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