What is the limitation on the block size of pl/sql?
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How do u count no of rows in a table?
Describe types of sql statements?
What is difference between inner join and self join?
Is it mandatory for the primary key to be given a value when a new record is inserted?
Which sql most popular?
Can we join tables without foreign key?
What are the different tcl commands in sql?
Are subqueries better than joins?
What are keys in sql?
What is an index? What are the types of indexes? How many clustered indexes can be created on a table?
need to split a string into separate values. eg. col1 col2 ---------- 100 - 'a,b,c' 200 - 'a,x,d,e' 300 - 'c' result: value count ------------- a - 2 b - 1 c - 2 etc.
How do I view an execution plan in sql?
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