Return-option returns the position of the start or end of the matched string. : REGEXP_INSTR « Regular Expressions Functions « Oracle PL/SQL Tutorial

Oracle PL/SQL Tutorial
1. Introduction
2. Query Select
3. Set
4. Insert Update Delete
5. Sequences
6. Table
7. Table Joins
8. View
9. Index
10. SQL Data Types
11. Character String Functions
12. Aggregate Functions
13. Date Timestamp Functions
14. Numerical Math Functions
15. Conversion Functions
16. Analytical Functions
17. Miscellaneous Functions
18. Regular Expressions Functions
19. Statistical Functions
20. Linear Regression Functions
21. PL SQL Data Types
22. PL SQL Statements
23. PL SQL Operators
24. PL SQL Programming
25. Cursor
26. Collections
27. Function Procedure Packages
28. Trigger
29. SQL PLUS Session Environment
30. System Tables Data Dictionary
31. System Packages
32. Object Oriented
33. XML
34. Large Objects
35. Transaction
36. User Privilege
Java
Java Tutorial
Java Source Code / Java Documentation
Java Open Source
Jar File Download
Java Articles
Java Products
Java by API
Photoshop Tutorials
Maya Tutorials
Flash Tutorials
3ds-Max Tutorials
Illustrator Tutorials
GIMP Tutorials
C# / C Sharp
C# / CSharp Tutorial
C# / CSharp Open Source
ASP.Net
ASP.NET Tutorial
JavaScript DHTML
JavaScript Tutorial
JavaScript Reference
HTML / CSS
HTML CSS Reference
C / ANSI-C
C Tutorial
C++
C++ Tutorial
Ruby
PHP
Python
Python Tutorial
Python Open Source
SQL Server / T-SQL
SQL Server / T-SQL Tutorial
Oracle PL / SQL
PostgreSQL
SQL / MySQL
MySQL Tutorial
VB.Net
VB.Net Tutorial
Flash / Flex / ActionScript
VBA / Excel / Access / Word
XML
XML Tutorial
Microsoft Office PowerPoint 2007 Tutorial
Microsoft Office Excel 2007 Tutorial
Microsoft Office Word 2007 Tutorial
Oracle PL/SQL Tutorial » Regular Expressions Functions » REGEXP_INSTR 
18. 2. 9. Return-option returns the position of the start or end of the matched string.

The default is 0, which returns the starting position of the pattern in the target.

A value of 1 returns the starting position of the next character following the pattern match.

SQL>
SQL> SELECT REGEXP_INSTR('This is a test','a',1,2,0position
  2  FROM dual;

  POSITION
----------
         0

SQL>
18. 2. REGEXP_INSTR
18. 2. 1. Regexp_Instr returns the location (beginning) of a pattern in a given string
18. 2. 2. REGEXP_INSTR(x, pattern [, start [, occurrence [, return_option [, match_option]]]]) searches for pattern in x.
18. 2. 3. Regexp_Instr
18. 2. 4. Parameters is a field that may be used to define how one wants the search to proceed:
18. 2. 5. Find the 's' and ignore case.
18. 2. 6. The simplest regular expression matches letters, letter for letter
18. 2. 7. SELECT REGEXP_INSTR('Two is bigger than One','One') where_it_is
18. 2. 8. Occurrence refers to the first, second, third, etc., occurrence of the pattern in S. The default is 1 (first).
18. 2. 9. Return-option returns the position of the start or end of the matched string.
18. 2. 10. The Return-option is set to 1 to indicate the end of the found pattern
18. 2. 11. Returns the position of the second occurrence that matches the regular expression s[[:alpha:]]{3} starting at position 1:
18. 2. 12. Returns the position of the second occurrence that matches the letter o starting at position 10 using REGEXP_INSTR()
18. 2. 13. Specify any series of letters and find matches, just like INSTR
18. 2. 14. regexp_instr(comments, '[^ ]+', 1, 9) > 0
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.