I have records like
A5 A4 Z1 B2 C7 C1A C11A B1 B4
I want them to be sorted in this manner
A4 A5 B1 B2 B4 C1 C11A C7 Z1
ORDER BY clause.
I want them to be sorted by alphabets and then by numeric values.
For your request:
sorted by alphabets and then by numeric values
I assume (deriving from your sample data) you want to
The first letter, treated as
The first number (consecutive digits), treated as
The whole string to break remaining ties, treated as
text. May or may not be needed.
SELECT * FROM tbl ORDER BY left(col, 1) -- 1st letter as text , substring(fest, '\d+')::int NULLS FIRST -- first number in string as int , col -- whole columns as cheap tiebreaker