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Recent questions tagged tbb-dbms-2
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Test by Bikram | Databases | Test 2 | Question: 1
Consider the table $R(p,q,w)$ and the queries given below: Q1: SELECT DISTINCT p,q FROM R ; Q2: SELECT p,q FROM R GROUP BY p,q ; Then, which of the following statements are TRUE? Q1 and Q2 always produce the same result. The output ... is a proper subset of the output of Q1. Q1 and Q2 produce different results. I and II II and III I only III and IV
Consider the table $R(p,q,w)$ and the queries given below:Q1: SELECT DISTINCT p,q FROM R ;Q2: SELECT p,q FROM R GROUP BY p,q ;Then, which of the following statements are ...
Bikram
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Bikram
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Aug 26, 2017
Databases
tbb-dbms-2
databases
sql
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