Question

I need a scenario where results need to be sorted out depending on the number of periods in it.

Field values are:

aa.bb.ee.tt
aa.tt.ee
aa.tt

If I want to search only values which consist on a single period, what will be the query?

Answer 1

if column name is str, and you put substr = “.” in the following SQL, you will get what you want. Sorted by number of periods in the column str

SELECT (LENGTH(str) - LENGTH(REPLACE(str, substr, ''))) / LENGTH(substr) AS cnt
...
ORDER BY cnt DESC