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bbrumm on 01/15/17

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Oracle SUBSTR Function

/ Published in: SQL

A few examples of the Oracle SUBSTR function.

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/* SUBSTR Examples */
 
 
/* 1 - Example with Both Parameters */
 
SELECT 'Complete IT Professional',
SUBSTR('Complete IT Professional', 1, 10) AS SUB
FROM DUAL;
 
/* 2 - Example with Only Start Position */
 
SELECT 'Complete IT Professional',
SUBSTR('Complete IT Professional', 5) AS SUB
FROM DUAL;
 
 
/* 3 - Example in Reverse */
 
SELECT 'Complete IT Professional',
SUBSTR('Complete IT Professional', -1, 5) AS SUB
FROM DUAL;
 
 
/* 4 - Example in Reverse */
 
SELECT 'Complete IT Professional',
SUBSTR('Complete IT Professional', -5, 5) AS SUB
FROM DUAL;
 
/* 5 - Example of SUBSTR with INSTR Combined */
 
SELECT 'Complete IT Professional',
SUBSTR('Complete IT Professional', 
  INSTR('Complete IT Professional', ' ', 1, 1)) AS SUB
FROM DUAL;
 
 
/* 6 - Example of SUBSTR with INSTR Combined */
 
SELECT 'Complete IT Professional',
SUBSTR('Complete IT Professional', 1, 
  INSTR('Complete IT Professional', ' ', 1, 1)) AS SUB
FROM DUAL;
 
 
/* 7 - Example of SUBSTR with INSTR Combined */
 
SELECT 'Complete IT Professional',
SUBSTR('Complete IT Professional', 
  INSTR('Complete IT Professional', ' ', 1, 1)+1,
  INSTR('Complete IT Professional', ' ', 1, 2)-INSTR('Complete IT Professional', ' ', 1, 1)-1) AS SUB
FROM DUAL;
 
/* 8 - Example to remove last character */
 
SELECT 'Complete IT Professional',
SUBSTR('Complete IT Professional', 0, 
  LENGTH('Complete IT Professional') - 1) AS SUB
FROM DUAL;
 
 
/* 9 - Example to remove last 5 characters */
 
SELECT 'Complete IT Professional',
SUBSTR('Complete IT Professional', 0, 
  LENGTH('Complete IT Professional') - 5) AS SUB
FROM DUAL;