REGEXP_INSTR(description,'[aeiou]{3,5}'): Specify from three to five consecutive vowels : Repeat Operator « Regular Expressions « Oracle PL / SQL

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Oracle PL / SQL » Regular Expressions » Repeat Operator 
REGEXP_INSTR(description,'[aeiou]{3,5}'): Specify from three to five consecutive vowels


SQL> create table TestTable(
  2    ID                    VARCHAR2(BYTE)         NOT NULL,
  3    Description           VARCHAR2(30 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','aeiou 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    aeiou With Letters

rows selected.

SQL>
SQL>
SQL> -- REGEXP_INSTR(description,'[aeiou]{3,5}'): Specify from three to five consecutive vowels, we'd get this:
SQL>
SQL> SELECT description,
  2      REGEXP_INSTR(description,'[aeiou]{2,3}') where_pattern_starts
  3  FROM testTable
  4  WHERE REGEXP_INSTR(description,'[aeiou]{3,5}') 0;

DESCRIPTION                    WHERE_PATTERN_STARTS
------------------------------ --------------------
aeiou With Letters                                1

SQL>
SQL>
SQL>
SQL>
SQL> drop table TestTable;

Table dropped.

SQL>
SQL>

           
       
Related examples in the same category
1. A repeat operator: {}. Repeating the vowel match a second time
2. REGEXP_INSTR(description,'[aeiou]{2,3}'): Matches from two to three times
3. Repetition operator would say, 'at least m times' with {m,}
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