SQLite detects the metadata changes (via the database version cookie) and 
reloads the schema from the db file, removing (at least) all internal 
structures it deems outdated or no longer required.

-----Ursprüngliche Nachricht-----
Von: Raheel Gupta [mailto:raheel...@gmail.com]
Gesendet: Freitag, 06. Dezember 2013 11:47
An: General Discussion of SQLite Database
Betreff: [sqlite] Functions affecting table structure ?

Hi,

I am trying to add some additional data with the table structure stored in 
SQLite. Everything seems to be working fine but when I do an alter query it 
seems to drop the table.

I have made changes in the following functions to handle the addition of the 
data:
sqlite3AlterFinishAddColumn() ,
sqlite3EndTable(),

I have made changes in the following functions to remove the changes during 
runtime only (sqlite feels its a normal table) sqlite3InitCallback(),
execExecSql()

I am trying to understand the ALTER queries and which function handles them. 
Any hint would be immensely appreciated. I have wasted a day or two trying to 
figure out why is the database dropping the structure when I add a column to an 
existing table (modified by my code) 
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--------------------------------------------------------------------------
 Gunter Hick
Software Engineer
Scientific Games International GmbH
Klitschgasse 2 – 4, A - 1130 Vienna, Austria
FN 157284 a, HG Wien
Tel: +43 1 80100 0
E-Mail: h...@scigames.at

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