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SQL Language (MOSC)

for primary key:sequence or select id and add 1

Apr 2, 2015 4:03AM edited Apr 2, 2015 5:07AM in SQL Language (MOSC) 1 commentAnswered ✓

in any table i have a primary key , to generate a value in primary key we have options

1- create sequence and assign the sequence to the column.

2- select max(id)+1 and assign the value to the column .

what is the best ?

what is the disadvantages for option 2 ?

0

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