What is the difference between varchar and varchar(max) datatypes?
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If i have one transaction say mainTransaction, within this mainTransaction i have another two transaction say t1 and t2. Now while execution t1 completes successfully and commit statement fires, but while executing t2 some error occurs and rollback statement fires. What happen to t1, is it rollback or not?
Can some one please help with a query which will take only max value of a column in a join.
Tell me what is the significance of null value and why should we avoid permitting null values?
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