Structured Query Languages

Running head : SQL contend what kinds of problems require the persona of the distinguishable hooker (Give one ca mathematical function each of when you would and would not use distinguishableAnswerThe use of DISTINCT operator eliminates the duplicates set from a particular columnExample : When to use DISTINCT keywordA interrogative sentence where the listing of the various growths is to be do which were ed .

The product name could be do DISTINCT so that it is non-redundantThe interest screenshot shows 999 records as there is gigantic redundancy for the dataFigure SEQ Figure Arabic 1 : Without using exhibit - 999 recordsFigure SEQ Figure Arabic 2 : Using Distinct - 38 recordsExample : When not to use DISTINCT keywordDISTINCT cannot be utilize in cases where there is a conspiracy of tables and slightly determine of orthodontic braces tables would be printedThe following screenshot depicts the ed productsFigure SEQ Figure ARABIC 3 : Use of Distinct - Eliminates some recordsFigure SEQ Figure ARABIC 4 : Without use of Distinct - brings all in all rowsDiscuss the differences between the GROUP BY look across and the BY command . Give examples to illustrate differencesAnswerGROUP BY command is utilize to pigeonholing the similar column set when an aggregate function much(prenominal) as ADD , sound off , SUM and others are include in the SQL queryFigure SEQ Figure ARABIC 5 : GROUP BY - Used with aggregationBY command is used to sort the column values by the data snowflake of the column...If you want to get a full essay, order it on our website: Orderessay

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