NOT like this!

Often situation when we know what we don't want to find. In the case of numeric value, you should already know, that there is <> sign in SQL which means not equal. This also works for non-numeric columns: you can easily set <> 'some word' condition. But what if we want to avoid multiple non-numeric values? Or avoid some pattern?

Of course, it's already solved! There is NOT statement in SQL, which can be used with LIKE and IN statements. For example, we can filter cars in audi_table so there won't be Q-series cars.


              123
            
SELECT *
FROM audi_cars
WHERE model NOT LIKE 'Q%'

Please note, that NOT should be placed before IN or LIKE, like in spelling.

Taak

Swipe to start coding

Extract all the cars from the audi_cars table except A3, A4, and Q3 models.

Oplossing

Schakel over naar desktop voor praktijkervaringGa verder vanaf waar je bent met een van de onderstaande opties

Was alles duidelijk?

Bedankt voor je feedback!

Sectie 2. Hoofdstuk 7

NOT like this!

Of course, it's already solved! There is NOT statement in SQL, which can be used with LIKE and IN statements. For example, we can filter cars in audi_table so there won't be Q-series cars.


              123
            
SELECT *
FROM audi_cars
WHERE model NOT LIKE 'Q%'

Please note, that NOT should be placed before IN or LIKE, like in spelling.

Taak

Swipe to start coding

Extract all the cars from the audi_cars table except A3, A4, and Q3 models.

Oplossing

Schakel over naar desktop voor praktijkervaringGa verder vanaf waar je bent met een van de onderstaande opties

Was alles duidelijk?

Bedankt voor je feedback!

Sectie 2. Hoofdstuk 7

Schakel over naar desktop voor praktijkervaringGa verder vanaf waar je bent met een van de onderstaande opties