For a field in a repeating frame, can the source come from
the column which does not exist in the data group which
forms the base for the frame ?
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why should i declare foreign key constraint as self relation instead of binary relation in tables ?
The table has 3 columns 4 rows. The output is which column has least null values( A COL SHOULD BE THE OUTPUT) Write the query plz. A B C ---------- 1 NULL 7 2 4 NULL NULL 5 NULL 3 NULL NULL
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