Gerry Snyder ha scritto:
Luca Moratto wrote:
Thanks Gerry,
but I can Create my table in memory from an attached db, I can Insert
new rows and I can Select the new rows and all values are correct,
except for my key field that is 0.
My Insert statement is INSERT INTO myTable VALUES (?,?,?);
I prepare this statement with sqlite3_prepare
I bind all values with sqlite3_bind_int, sqlite3_bind_text, ...
I bind my key field with sqlite3_bind_null
I exec with sqlite3_step
It works because if I exec e SELECT rowid,* FROM myTable I can find
all the new rows and all values except for my key field (INTEGER
PRIMARY KEY, I have tried also AUTOINCREMENT) that is 0, but rowid is
correct....
I need to use a SELECT *, I can't get rowId so how and when my key
field has the same value of rowId, why it does't works?
Thanks in advanced
Luke
Luke,
Sorry, I should not have even mentioned that part, since it obviously
worked for you and it detracted from my main point, which you missed.
When you create the table in the :memory: file by using
CREATE TABLE AS, the PRIMARY KEY part of the field description gets
dropped. Reread the last part of the example I posted. Or run
select sql from sqlite_master
yourself with the rest of your code.
You have to create the :memory: copy of the table with a different
method. I would suggest using the other format of the CREATE TABLE
command and populating it with data from a SELECT.
Gerry
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Thanks Gerry and excuse me, I had not read your answer well.
I have change my application:
now first I read sql statements from attachedDb.sqlite_master where
type='table';
then exec that sql to create tables,
then I exec INSERT INTO 'mynewtable' AS SELECT * FROM
'attachedDb'.'mytable'.
And now primary key works as expected!
I already created all the indexes after table creation, but I believed
that the constraint of primary key came copied also by "create table ...
as ...)...
Thanks
Luke
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