Truncating and padding string data

Functions for Manipulating Data in PostgreSQL

Brian Piccolo

Sr. Director, Digital Strategy

Removing whitespace from strings

TRIM([leading | trailing | both] [characters] from string)

  • First parameter: [leading | trailing | both]

  • Second parameter: [characters]

  • Third parameter: from string

Functions for Manipulating Data in PostgreSQL

Removing whitespace from strings

SELECT TRIM('  padded  ');

+--------+
| TRIM   |
|--------|
| padded | 
+--------+
Functions for Manipulating Data in PostgreSQL

Removing whitespace from strings

SELECT LTRIM('  padded   ');

+------------+
| LTRIM      |
|------------|
| padded     | 
+------------+
Functions for Manipulating Data in PostgreSQL

Removing whitespace from strings

SELECT RTRIM('  padded   ');

+----------+
| RTRIM    |
|----------|
|   padded | 
+----------+
Functions for Manipulating Data in PostgreSQL

Padding strings with character data

SELECT LPAD('padded', 10, '#');

+-------------+
| LPAD        |
|-------------|
| ####padded  | 
+-------------+
Functions for Manipulating Data in PostgreSQL

Padding strings with whitespace

SELECT LPAD('padded', 10);

+-------------+
| LPAD        |
|-------------|
|     padded  | 
+-------------+

SELECT LPAD('padded', 5);

+------------+
| LPAD       |
|------------|
|     padde  | 
+------------+
Functions for Manipulating Data in PostgreSQL

Padding strings with whitespace

SELECT RPAD('padded', 10, '#');

+-------------+
| RPAD        |
|-------------|
| padded####  | 
+-------------+
Functions for Manipulating Data in PostgreSQL

Let's practice!

Functions for Manipulating Data in PostgreSQL

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