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SQL Basics in PostgreSQL

See the whole table
Select some columns
Filtering rows
Logic
Text patterns
17. The underscore sign (_)
To be or NULL to be
A little bit of mathematics
Let's practice

Instruction

Nice! Now, sometimes we may not remember just one letter of a specific name. Imagine we want to find a girl whose name is... Catherine? Katherine?

SELECT *
FROM user
WHERE name LIKE '_atherine';

The underscore sign (_) matches exactly one character. Whether it's Catherine or Katherine – the expression will return a row.

Exercise

Select all columns for cars which brand matches 'Volk_wagen'.

Stuck? Here's a hint!

Type:

SELECT *
FROM car
WHERE brand LIKE 'Volk_wagen';