When do we use triggers?
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Does a primary key have to be a number?
What is pl/sql and what is it used for?
----> There is a table T with two columns C1 and C2. The data is as below: C1 C2 1 4 2 5 3 6
What is sql query limit?
What are triggers and its uses?
Why do we need sharding?
What is difference between rank () row_number () and dense_rank () in sql?
What are the types of index in sql?
what are the advantages of mysql in comparison to oracle? : Sql dba
What is cold data?
source destination distance chennai bangalore 500 bangalore chennai 500 hyd delhi 1000 delhi hyd 1000 bangalore hyd 800 Here chennai to bangalore and bangalore to chennai is same distance. and hyd and delhi also same criteria. Based on the distance i want to display only one row using sql query?
Which are the different types of indexes in sql?
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