Could someone kindly point me to the right direction to seek further or give me any hints regarding the following task?
I'd like to list all the distinct values from a MySQL table from column A that don't have a specific value in column B. I mean none of the same A values have this specific value in B in any of there rows. Taking the following table (let this specific value be 1):
column A | column B
----------------------
apple |
apple |
apple | 1
banana | anything
banana |
lemon |
lemon | 1
orange |
I'd like to get the following result:
banana
orange
Thanks.
Since there are null values, I have also added a nvl condition to column B .
ORACLE:
SELECT DISTINCT COLUMN_A FROM MY_TABLE
WHERE COLUMN_A NOT IN (SELECT COLUMN_A FROM MY_TABLE WHERE nvl(COLUMN_B,'dummy') = '1');
MYSQL:
SELECT DISTINCT COLUMN_A FROM MY_TABLE
WHERE COLUMN_A NOT IN (SELECT COLUMN_A FROM MY_TABLE WHERE IFNULL(COLUMN_B,'dummy') = '1');
This might help you:
SELECT DISTINCT A FROM MY_TABLE
WHERE A NOT IN (SELECT DISTINCT A FROM MY_TABLE WHERE B = 1)
SELECT * FROM your_Table WHERE Column_A NOT IN(
SELECT Column_A FROM Your_Table WHERE Column_B = '1'
)
This statement gives you the expected result:
select COLUMNA from myTable where COLUMNA not in (select distinct COLUMNA from myTable where columnB
=1) group by COLUMNA;
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