oracle substring
-- ORACLE substr(string, start, [, length ])
SELECT substr('Hello World', 4, 5) FROM DUAL; -- lo Wo
SELECT substr('Hello World', 4) FROM DUAL; -- lo World
SELECT substr('Hello World', -3) FROM DUAL; -- rld
SELECT substr('Hello World', -3, 2) FROM DUAL; -- rlORACLE SQL SUBSTR
SUBSTR(string, :START_POS, :SUBSTR_LENGTH);
SELECT SUBSTR('ABCDEFG',3,4) FROM DUAL;
--OUTPUT: CDEFCopyright © 2021 Codeinu
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