Hi all,
I have a question about alter table. for example, I create a table
person(ID integer primary key, name text, addr text),
Then I want to upgrade the table and add some columns, "alter table person
add age integer", I want to know the changed
table structure will have a big effect on the after DB operation (like
Insert, Select....) or not? Suppose the table already
has many many rows.
Thanks!
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