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Does group by remove duplicates?
what is sql server agent? : Sql dba
How to start an oracle instance?
How to connect php with different port numbers?
What are wait types?
Is there any performance difference between if exists (select null from table) and if exists (select 1 from table)?
Why we use the openxml clause?
what ASIS BUSINESS PROCESS IN ORACLE FINANCE
Who proposed the relational model?
What are the steps in creating a database?
What are the source of constraints?
How many concurrent programs you have customized, can you name some of them?
How can I check that whether automatic statistic update is enabled or not?
What is normalization and what are the advantages of it?
If you're given a raw data table, how would perform etl (extract, transform, load) with sql to obtain the data in a desired format?