Multiple conditin on a single column in a single query

Question

i want to select data from the table using diff conditions on a single column
for eg:
i need emp details like whose having empno as 5-15,19-45,50-89 ..etc this how can i give a condition in a single query
we can use in or between for 2 or 3 conditions but i have plenty off like this

Answer 1

Hi,
848525 wrote:
i want to select data from the table using diff conditions on a single column
for eg:
i need emp details like whose having empno as 5-15,19-45,50-89 ..etc this how can i give a condition in a single query
we can use in or between for 2 or 3 conditions but i have plenty off like thisYou can use OR for any number of conditions; it works the same for 4 or more.
You could also put the ranges into a table (or a sub-query, as shown below) and join:
WITH     empno_ranges     AS
     SELECT     3000 AS low_val, 5000 AS high_val  FROM dual  UNION ALL
     SELECT     7000,           7499               FROM dual  UNION ALL
     SELECT     7500,           7599               FROM dual  UNION ALL
     SELECT     7800,           7899               FROM dual
SELECT       r.*
,       COUNT (e.empno)     AS emp_cnt
FROM            empno_ranges     r
LEFT OUTER JOIN     scott.emp     e  ON  e.empno  BETWEEN r.low_val
                                             AND     r.high_val
GROUP BY  r.low_val, r.high_val
ORDER BY  r.low_val
;Output:
LOW_VAL   HIGH_VAL    EMP_CNT
   3000       5000          0
   7000       7499          2
   7500       7599          2
   7800       7899          3