SQL缺少表达

Question

I am trying to select the data where the gender is female or x. It can not be male the code I am using returns Missing Expression :

    SELECT pet_id, name, gender, type, breed
    FROM Pet
    WHERE Name Like '%s' or Name like 'S%'
    And WHERE Gender ='F' or Gender ='X';

Is my formatting okay?

Answer 1

In your query you have used the where keyword twice which is not valid.
The sql syntax prohibits you from doing so, you can have one from and where per select keyword.
to select multiple fields, you separate by commas.
to select from multiple tables, you separate by commas.
to use multiple conditions in your where clause you use and & or (this rule applies to most programming languages, you cannot have for example if(x1==1 and if (x2==2)) instead you use if(x1==1 && x2==2) )
also try using the in operator for your condition on gender, as such

Gender in('F','X')

the in operator allows you to check if the value of a given column exists in an array/list/series of possible values.

Answer 2

You have duplicated "where" in your query. Rewrite in following way should work:

SELECT pet_id, name, gender, type, breed
FROM Pet
WHERE (Name Like '%s' or Name like 'S%') AND (Gender ='F' or Gender ='X');

Answer 3

Try this

SELECT pet_id,name,gender,type,breed FROM Pet
Where (Name Like '%s' or Name like 'S%')
And (Gender ='F' or Gender ='X');

We can't use 'Where' multiple times in single query and as i see in your case you should apply round brackets.

Answer 4

Remove second WHERE and don't forget brackets:

SELECT pet_id, name, gender, type, breed
    FROM Pet
    WHERE (Name Like '%s' or Name like 'S%')
       And Gender in ('F','X')