How to check if a value is a number in SQLite

Question

I have a column that contains numbers and other string values (like \"?\", \"???\", etc.)

Is it possible to add an \"is number\" condition to the where clause in SQL

Answer 1

select * from mytable where abs(mycolumn) <> 0.0 or mycolumn = '0'

http://sqlfiddle.com/#!5/f1081/2

Based on this answer