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






  1. Oracle PL / SQL
  2. Regular Expressions
  3. Repeat Operator

REGEXP_INSTR(description,'[aeiou]{3,5}'): Specify from three to five consecutive vowels


SQL> create table TestTable(
  2    ID                    VARCHAR2(4 BYTE)         NOT NULL,
  3    Description           VARCHAR2(30 BYTE)
  4  )
  5  /

Table created.

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

1 row created.

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

1 row created.

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

1 row created.

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

1 row created.

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

1 row created.

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

1 row created.

SQL> insert into TestTable (ID, Description) values('7','aeiou With Letters');

1 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

7 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,}