The simplest regular expression matches letters, letter for letter : REGEXP_INSTR « Regular Expressions « Oracle PL / SQL

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Oracle PL / SQL » Regular Expressions » REGEXP_INSTR 
The simplest regular expression matches letters, letter for letter
 


SQL> create table TestTable(
  2    ID                    VARCHAR2(BYTE)         NOT NULL,
  3    Description           VARCHAR2(40 BYTE)
  4  )
  5  /

Table created.

SQL>
SQL>
SQL> insert into TestTable (ID, Descriptionvalues('1','1234 5th Street');

row created.

SQL> insert into TestTable (ID, Descriptionvalues('2','1 Culloden Street');

row created.

SQL> insert into TestTable (ID, Descriptionvalues('3','1234 Road');

row created.

SQL> insert into TestTable (ID, Descriptionvalues('4','33 Thrid Road');

row created.

SQL> insert into TestTable (ID, Descriptionvalues('5','One than another');

row created.

SQL> insert into TestTable (ID, Descriptionvalues('6','2003 Movie');

row created.

SQL> insert into TestTable (ID, Descriptionvalues('7','Start With Letters');

row created.

SQL>
SQL> select from TestTable;

ID   DESCRIPTION
---- ----------------------------------------
1    1234 5th Street
2    1 Culloden Street
3    1234 Road
4    33 Thrid Road
5    One than another
6    2003 Movie
7    Start With Letters

rows selected.

SQL>
SQL>
SQL>
SQL> -- The simplest regular expression matches letters, letter for letter
SQL>
SQL> SELECT REGEXP_INSTR(Description,'Road') One FROM testtable WHERE REGEXP_INSTR(Description,'Road') 0;

       ONE
----------
         6
        10

SQL>
SQL>
SQL> drop table TestTable;

Table dropped.

SQL>
SQL>
           
         
  
Related examples in the same category
1. regexp_instr function summary
2. Simple demo for REGEXP_INSTR
3. regexp_instr (string, pattern, position, occurence, return-option)
4. Return-option is set to 1 to indicate the end of the found pattern
5. regexp_instr (string, pattern, position, occurence, return-option, parameters): c: to match case sensitively
6. 'i': to match case insensitively
7. regexp_instr (string, pattern)
8. Returns the position of the second occurrence that matches the letter 'o' starting at position 10
9. REGEXP_INSTR function in where clause
10. Apecify any series of letters and find matches, just like INSTR
11. REGEXP_INSTR(description,'ee') > 0
12. REGEXP_INSTR('abc','d',1,1,1)
13. REGEXP_INSTR('abc','d?'): include the '?' repetition character
14. REGEXP_INSTR('Mississippi', 'si', 1,2,0,'i')
15. regexp_instr(comments, '[^ ]+', 1, 9)
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