How do I know if I have sql express or standard?
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how to escape special characters in sql statements? : Sql dba
what is try_catch block in procedure
can i write pl/sql code in a package
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?
Why primary key is required?
Who developed sql?
What is the order of sql select?
What is sql query limit?
How many columns should be in an index?
four procedures is are there should i write their in a package
Explain two virtual tables available at the time of database trigger execution.
What is the result, when NULL is compared with NULL?
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