What is sql stand for?
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What are the different ways to optimize a sql query?
Describe sql comments?
What does “select count(1) from tab” result?
consider a table which contain 4 columns,ename,eno,sal and deptno, from this table i want to know ename who having maximum salary in deptno 10 and 20.
What are types of exception?
How to check if a column is nullable before setting to nullable?
Why should I use postgresql?
Why indexing is needed?
What are the datatypes available in pl/sql ?
What are indexes, and what are the different types?
what are the performance and scalability characteristics of mysql? : Sql dba
Write a sql select query that only returns each name only once from a table?
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