Re: Enabling the foreign key support in Sliqte3

[Luciano de Souza <luchyanus@...>]

Yes, you are right. Using sqlite3.exe, I had created the database with 
these commands:

sqlite3 test.dbl
sqlite> pragma foreign_keys = on;
sqlite> .read test.sql
sqlite> sqlite_version();
3.7.5

and after:

lua test.lua
3.3.17

I created the database with 3.7.5 version, but when running the called 
version was 3.3.17. I placed sqlite3.exe and Sqlite3.dll in ./clibs and 
I though it would be sufficient to update my version. However, if I 
understood the version embedded in luasql is older and there is no 
support for foreign keys.

In Lua script, I tried also:

cur = con:execute('pragma foreign_keys = on')

But this attempt to enable via code the foreign key for the section 
doesn't result. Yes, the problem seems to be the old version of Sqlite 
used by Luasql.

Is the conclusion that I can't use foreign keys with 
Luasqlite.sqlite3()? If the answer is yes, the alternatives could be:

1. To manage relations among tables not in the database, but in the Lua 
code. When the number of tables or the number of relations are few, 
perhaps it would be the easier approach.

2. To change to another database more powerful, supporting foreign keys. 
But in this case, I don't want a separated process like Mysql.

Regarding a database which can be distributed together with the program 
without additional instalations and foreign keys support, is there 
another option of database? Could I use Luasql or should use another Lua 
module?

Em 13/03/2011 00:11, Bob Chapman escreveu:
> On Sat, Mar 12, 2011 at 6:20 PM, Luciano de Souza<luchyanus@gmail.com>  wrote:
> > Hi all,
> >
> > I want to use foreign keys in Sqlite3. I am using the modules available in
> > Lua for Windows and I downloaded the DLL and the commandline tool for
> > Sqlite3.
> > Does someone has an idea why I can't use foreign keys?
> Does your example work for the command line tool? If so, this might be
> the problem:
>
> Lua 5.1.4  Copyright (C) 1994-2008 Lua.org, PUC-Rio
> > require "luasql.sqlite3"
> > env = luasql.sqlite3()
> > con = env:connect("")
> > cur = con:execute("select sqlite_version()")
> > print(cur:fetch())
> 3.3.17<====
>
> [Run using the Lua for Windows package]
>
> --