Discussions Populaires Dans la Communauté PL SQL

 

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What is Database..? And what are these My SQL, MS SQL, NO SQL ...? and when do I need them..?‎

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What is database normalization?‎

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What is the difference between SQL and PL/SQL?‎

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How to get max and sub max in group by sql query? ‎

Table:    IDSalesDate /1/ 1/1/ 1            /3/   3          /8/ 4          // 5          // 6          1// 7          /2/ 6          /4/ 7            //   ‎ ... Voir Plus

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Can we do backward referencing in sql ? if possible then how?‎

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What is a foreign key with 'set NULL' On 'Event' or Foreign key with 'cascade' On 'Event' in Oracle?‎

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What is the difference between rollup and cube?‎

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In SQL Query: How can you get the dates between two provided dates?‎

The provided dates from1/3/2014 to4/3/2014 the result should be like this:1/3/2014-2/3/2014-3/3/2014-4/3/2014‎

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What is the importance of purge clause in a drop table statement?‎

Drop statement can have below two syntax. What is the difference between them. 1. drop table <table_name> ; 2. drop table <table_name> purge;  ‎

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