How long it takes to learn pl sql?
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what is a tablespace? : Sql dba
What is the difference between CHAR and VARCHAR2? If VARCHAR2 serves the uses of CHAR why CHAR is still used and not been discarded yet?
Which one of the following pairs of aggregate functions do you use with character fields? 1. COUNT(field) and MAX(field) 2. AVG(field) and COUNT(field) 3. MIN(field) and SUM(field) 4. AVG(field) and MAX(field) 5. COUNT(field) and SUM(field)
what will be the output: select 1 from emp union all select 2 from emp;
What is a natural join sql?
What is acid property in a database?
What is sql query limit?
How do I remove all records from a table?
what is a cursor? : Sql dba
What is the use of sqlerrd 3?
What is a self join ?
Which is faster union or join?
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