Basically unique and distinct both are same means both do the same work , unique statement was used earlier by the oracle database but now a days distinct statement is using by the oracle ( now it is ...

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Sharding-JDBC or Sharding-Proxy? Sharding-Proxy Expected behavior Same result for two SQL. Actual behavior The result with DISTINCT syntax lose data. Reason analyze (If you can) The final result only ...

SELECT DISTINCT company, last_name, first_name FROM Sales; You can still use DISTINCT when narrowing and sorting your results, as with any SELECT statement.

Current information systems must deal with complex data management with regards on evolution over the time. There are several database systems with different data modelling principles, data handling ...