8 Top SQL String Functions to Write Better Query

You can become smart when you write complex SQL queries. You will get better pay when you write Quickly. You will be appreciated when you use built-in string functions. Today I am sharing on top SQL String functions.


SQL String functions

  1. Length Function
  2. TRIM functions
  3. Concatenate function
  4. Trailining Function
  5. CHAR function
  6. LPAD
  7. RPAD
  8. Soundex

List of SQL string functions.

1). Length

Select LENGTH (first_name) 
from my_employee;

The above query counts the first_name all characters that including spaces.

2). TRIM

Explained with examples about TRIM functions.

3). Concatenate

Select first_name 
|| last_name 
from my_employee;

4). Trailing Functions

Select Trim (trailing 
'y' from first_name) 
from my_employee;

Trailing is a case sensitive.

5). CHAR Function

Best examples of CHAR function you can find here.

6). and 7). LPAD and RPAD

You can find here examples for RPAD and LPAD

8). Soundex

Select Soundex(first_name) 
from my_employee;

The above example converts ‘Srinimf’ into a Alpha-numeric value.

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Author: Srini

Experienced software developer. Skills in Development, Coding, Testing and Debugging. Good Data analytic skills (Data Warehousing and BI). Also skills in Mainframe.