Good day everyone.

I have two tables that contain about 5 million records. I am trying to write
an SQL command to delete rows from table A with PK (x,y,z) where PK (x,y,z)
is not in table B.

tried using "NOT IN" but my PK is composite.

trying    A.x<>B.x    AND    A.y<>B.y      AND    A.z<>B.z   would just
hang.

Is my data too big for SQLIte? is it really hanging or it could be taking 3
days?


thank you,

fadhel
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