I have already created a table to the database.
Table is something like following (I am using sqlite on mac for iPhone dev)
create table
(
attendanceDate varchar,
studentNo integer,
absentDetail varchar
);
Now I have already committed this statements. What I need is the following:
I don't know the alter table syntax in sqlite3.
So, I need help.
Thanks in advance.
SQLITE3 does not have syntax to do what you want.
From the SQLITE documentation at http://www.sqlite.org/lang_altertable.html
SQLite supports a limited subset of ALTER TABLE. The ALTER TABLE command in SQLite allows the user to rename a table or to add a new column to an existing table. It is not possible to rename a colum, remove a column, or add or remove constraints from a table.
You will need to recreate the table with the composite primary key and foreign key defined.
When you create the table you need to create the primary key then. SQLLite3 doesn't support foreign key constraints as far as I know. Check out this link for more information. I hope this helps.
I got the solution, By R&D.
I think, I should drop my table & recreate the table by following syntax,
That will work as what I needed.
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