Why join is faster than subquery?
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Can procedure in package be overloaded?
What is primary key and foreign key?
how to find the First and Last Observation from the table: Ex: OBS Name Sal Ans like: OBS Name Sal 105 E 5000--> 105 E 5000 102 B 2000 104 D 4000 103 C 3000 101 A 1000--> 104 D 4000
What are the different types of constraints?
one of the column in my table contains the data like SAL ---- 1000 1000 2000 3000 3000 So my requirement is i want output like SAL --- 1000 2000 3000 it mean i want to delete duplicate rows in the table permanently and i want output in the above formatow should u write query?
What are different types of refreshment techniques of materialised view
What are the benefits of triggers?
what is oracle sql,pl/sql with interfaces
How to execute OS(operating system) command from pl/sql?
how to enter binary numbers in sql statements? : Sql dba
Can a varchar be a primary key?
what are the tunnig tables you used for tuning a query and tell me some of coloumns in that tuning tables?