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GATE Computer Science (CS) 2011 Solved Paper

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Question : 42

Total: 65

Consider a database table T containing two columns X and Y each of type integers. After the creation of the table, one record (X= 1, Y=1) is inserted in the table.
Let MX and MY denote the respective maximum values of X and Y among all records in the table at any point in time. Using M X and MY, new records are inserted in the table 128 times with X and Y values being MX + 1, 2*MY + 1 respectively. It may be noted that each time after the insertion, values of MX and MY change.
What will be the output of the following SQL query after the steps mentioned above are carried out?
SELECT Y FROM T WHERE X=7;

127
255
129
257

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