TRIM in PostgreSQL - Examples & AI Generator

When working with text data in PostgreSQL, removing unwanted spaces or specific characters is a common need—but TRIM’s syntax can be confusing compared to other databases. PostgreSQL’s TRIM function gives you fine control but requires the correct order and use of parameters. With AI2sql, you get instant, production-ready TRIM queries by simply describing the outcome—no SQL memorization or manual trial-and-error required. Focus on clean data, not fiddly syntax.

TRIM Syntax in PostgreSQL

PostgreSQL TRIM syntax lets you remove characters (usually spaces) from the beginning, end, or both sides of a string. Here’s the formal structure:

TRIM([LEADING | TRAILING | BOTH] [characters] FROM string)

• LEADING: Trim from the start only

• TRAILING: Trim from the end only

• BOTH: Trim from both ends (default)

• characters: By default, a space; can be any set of characters

Example: TRIM(BOTH '.' FROM '...hello...') returns 'hello'.

TRIM Examples You Can Generate Instantly

See how TRIM PostgreSQL examples apply in real business scenarios. All queries are compatible with PostgreSQL’s requirements:

1. Remove Spaces from Customer Names

SELECT TRIM(name) AS clean_name FROM customers;

Use case: Ensure no accidental spaces when checking customer names.

2. Clean Up Order IDs with leading zeros

SELECT TRIM(LEADING '0' FROM order_id) AS formatted_order_id FROM orders;

Use case: Convert '00012345' to '12345' for reporting.

3. Remove Dots and Dashes from Product Codes

SELECT TRIM(BOTH '.-' FROM product_code) AS standardized_code FROM products;

Use case: Unify part numbers for consistent analysis.

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Conclusion

Mastering TRIM syntax in PostgreSQL opens the door to cleaner, more reliable data—but you don’t have to memorize parameters or dig through documentation. With AI2sql, generate production-ready PostgreSQL TRIM queries in 10 seconds, saving time and reducing manual error. Want more advanced scenarios or instant results? Generate Your First Query Now.

Related Resources

• Learn TRIM

• Try AI2sql Generator

FAQ: TRIM in PostgreSQL

• Can I trim characters other than spaces?
  Yes, specify the characters: TRIM(BOTH '-' FROM string)

• Is TRIM case-sensitive in PostgreSQL?
  Yes, trimming is case-sensitive—TRIM('a' FROM 'AbcA') only removes lowercase 'a'.

• How is TRIM syntax in PostgreSQL different from MySQL?
  PostgreSQL uses FROM in the syntax, e.g., TRIM(BOTH '.' FROM str), while MySQL allows TRIM('.' FROM str) without the BOTH keyword.