Re: [sqlite] Embedded SQL in C
That sounds very interesting. Could you please elaborate a little more on that ? Leif John Stanton wrote: The Sqlite BIND capability makes implementing an embedded SQl interface quite a simple operation. We use embedded SQL with Sqlite but do it within a proprietary language. It was almost trivial to implement. Leif Jensen wrote: Hi, In a larger project we are using PostgreSQL database and Embedded SQL in C (using ECPG) in a server daemon. We would like to be able to have this to work with SQLite for a stand-alone application. The Embedded SQL in C standard is as used by Oracle (and former Informix) and of course PostgreSQL. Does anyone know of an Embedded SQL in C (pre-compiler/interface) that will work with SQLite ? Leif - To unsubscribe, send email to [EMAIL PROTECTED] - - To unsubscribe, send email to [EMAIL PROTECTED] - - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] Embedded SQL in C
Thank you for your ideas. I thought about the "fake" library myself even though our project is more like 20 - 30k lines, but I'm not sure how bad it would be. I'm aware of the SQL dialects, but we have tried to make a point of using "standard" SQL syntax. Of course we might have to develop some triggers/functions that are not available in SQLite at the moment. I was hoping someone had already done something along these lines before. Leif Joe Wilson wrote: --- Leif Jensen <[EMAIL PROTECTED]> wrote: In a larger project we are using PostgreSQL database and Embedded SQL in C (using ECPG) in a server daemon. We would like to be able to have this to work with SQLite for a stand-alone application. The Embedded SQL in C standard is as used by Oracle (and former Informix) and of course PostgreSQL. Does anyone know of an Embedded SQL in C (pre-compiler/interface) that will work with SQLite ? I am not aware of such a pre-compiler for SQLite. If your project is quite large (100,000+ lines of code) then porting PostgreSQL's embedded C compiler ECPG to SQLite may be a viable alternative. http://doxygen.postgresql.org/dir_45ac211730e8147f7f879781af2b8b2a.html The main porting effort would be in the ecpglib/ directory, mapping all PQ-prefixed postgres functions and the PG-prefixed data structures to their SQLite equivalents. http://doxygen.postgresql.org/dir_9bd0bfe8893f57601e39e3093fd54938.html A possibly simpler approach may be to construct a "fake" libpq library for use by the PostgreSQL ECPG program that does all the mappings to/from sqlite3. You'd only have to support the subset of libpq functions actually used by ECPG. But even if you did such a port using either approach, be aware that the SQL dialects of Postgres and SQLite are not the same - you'd likely have to change some of the embedded SQL statements in your code. Sick sense of humor? Visit Yahoo! TV's Comedy with an Edge to see what's on, when. http://tv.yahoo.com/collections/222 - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] Embedded SQL in C
Hi, In a larger project we are using PostgreSQL database and Embedded SQL in C (using ECPG) in a server daemon. We would like to be able to have this to work with SQLite for a stand-alone application. The Embedded SQL in C standard is as used by Oracle (and former Informix) and of course PostgreSQL. Does anyone know of an Embedded SQL in C (pre-compiler/interface) that will work with SQLite ? Leif - To unsubscribe, send email to [EMAIL PROTECTED] -
Re: [sqlite] ANN: Sqlite3Explorer
Have you heard about wxWidgets (www.wxWidgets.org) ? A great free GUI library (and much more) that works on Windows, Linux and Mac (at least). Using that and your app. would do too ;-). I have just made a database application with these that runs on both Linux and Windows using SQLite3. Leif Cariotoglou Mike wrote: [EMAIL PROTECTED] it seems the new controls I used require this function, which only exists in win2k+. sorry for this, I think I will rebuild *without* the devexpress controls, for more genral purpose use.. -Original Message- From: Serge Liber [mailto:[EMAIL PROTECTED] Sent: Monday, April 04, 2005 8:30 PM To: sqlite-users@sqlite.org Subject: Re: [sqlite] ANN: Sqlite3Explorer Hi, When starting sqlite3Explorer an error message appears: "The procedure entry point GdiGradientFill could not be located in the dll GDI32.dll" How can I proceed? I use NT4+sp6 Serge Liber New version is out. Since the problem with size limits was not lifted from contrib, I created a home site for the program. You will now be able to get latest version from http://www.singular.gr/sqlite Latest is 1.1 , 24/3/2005 (ignore the typo in the date) Regards,mike
Re: [sqlite] ANN: Sqlite3Explorer
Any chance for a Linux version ? Or a web version ? Greetings, Leif Cariotoglou Mike wrote: New version is out. Since the problem with size limits was not lifted from contrib, I created a home site for the program. You will now be able to get latest version from http://www.singular.gr/sqlite Latest is 1.1 , 24/3/2005 (ignore the typo in the date) Regards,mike
Re: [sqlite] Row count after prepare
Hi Marcelo, It would, but I don't know the contents of the SQL at the point where I need get the row count, so I would have to scan the statement. Putting in the extra 'count(*)' all over is not really possible. Does anyone know the timing of a sqlite3_step() compared to sqlite3_step() + sqlite_column_() ? Leif Marcelo Zamateo wrote: Hi Leif: Will "Select Count(*) from (Your_SQL)" give you what you want? Be careful if Your_SQL includes Group By clause, don't know if work as expected. Marcelo
Re: [sqlite] Row count after prepare
Hi Dan, Ah yes, of course (I knew this was a newbie question ;-) ). So I guess I will have to use sqlite3_get_table in this case. Thank you for the enlightment, Leif Dan Kennedy wrote: --- Leif Jensen <[EMAIL PROTECTED]> wrote: Hi All, I'm quite new to SQLite, but like it very much. I am trying it out for an existing applicationm which seems good, but I have one problem: How do I get the number of rows in the result set after having called sqlite3_prepare( ... ) ? Of course I could call sqlite3_step() until no more rows are returned, but isn't there a better way ? It can't be done. Calling sqlite3_prepare() just compiles the SQL to bytecode (see the EXPLAIN command). It doesn't actually read any data from the database file (except maybe the schema from sqlite_master). Dan. __ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/
[sqlite] Row count after prepare
Hi All, I'm quite new to SQLite, but like it very much. I am trying it out for an existing applicationm which seems good, but I have one problem: How do I get the number of rows in the result set after having called sqlite3_prepare( ... ) ? Of course I could call sqlite3_step() until no more rows are returned, but isn't there a better way ? Thanks, Leif
