Re: [sqlite] checking if a table exists

bind>) >> cur.execute("select count(*) from sqlite_master where type = 'table' and >> name = ?;", (,)) >> >> >> -Original Message- >> From: sqlite-users [mailto:sqlite-users-boun...@mailinglists.sqlite.org] On >> Behalf Of mikeegg1 >> Sent:

[sqlite] checking if a table exists

I’m using the statement: select count(*) from sqlite_master where type = 'table' and name = ‘$NAME’; This statement works fine in the sqlite3 shell. This statement does not work in my API. Is there a PRAGMA I need to issue so I can check for table existence? TIA Mike PERL code to check for ta

Re: [sqlite] rowid changing....

Thanks everyone. I was mis-equating REPLACE with UPDATE. I’ll change my code to “INSERT or IGNORE” and add an UPDATE. Mike > On Sep 18, 2016, at 05:34, Keith Medcalf wrote: > > > On Saturday, 17 September, 2016 21:35, mikeeggl asked: > >> In my DDL I have “integer primary key not null” on m

[sqlite] rowid changing....

Happy Saturday. In my DDL I have “integer primary key not null” on my tables. When I do the first insert to these tables the rowid is assigned. The insert statement is a “insert or replace into…” so I don’t have to deal with insertion errors. However, I expected the rowid to not change when the

Re: [sqlite] Does sqlite3 have variables like Oracle?

I forgot I could use it inside the shell. Thanks. Mike > On Sep 11, 2016, at 16:58, Simon Slavin wrote: > > > On 11 Sep 2016, at 10:53pm, mikeegg1 wrote: > >> Thanks. I thought not. I’m doing this from PERL on a Mac and don’t know if I >> can fully access last_

Re: [sqlite] Does sqlite3 have variables like Oracle?

Thanks. I thought not. I’m doing this from PERL on a Mac and don’t know if I can fully access last_row_id(). :) Mike > On Sep 11, 2016, at 16:52, Simon Slavin wrote: > > > On 11 Sep 2016, at 10:48pm, mikeegg1 wrote: > >> I think Oracle (a long distant memory) has var

[sqlite] Does sqlite3 have variables like Oracle?

I think Oracle (a long distant memory) has variables like @variable or @@variable where you can do something like '@variable = select rowid from table where field = 4' and then later do 'insert into othertable (field2) value(@variable)’. Does this make sense? I’m wanting to in the shell select

[sqlite] Any way to do inexpensive SQLite database/table versioning? (I.e. cheap snapshotting & jumping between)

I was once told of an idea (decades ago) of versioning data within a table where one column has a real/float value that is the version number. The data in the table can be committed as necessary. If the data needs to be rolled back the data can be rolled back/deleted to the table based on the re

[sqlite] Podcast with Dr Hipp: SQLite history, success and funding

I?m listening to the podcast now. Great episode and I?ve subscribed to their podcast series. As a side thought of what I?ve listened to so far? Is there a page/reference/discussion about how the consortium was/is set up? I am integrating SQLite into my Mac OS X application and like SQLite. I am

Re: [sqlite] Question about opening database files

I’m working on accessing sqlite3 from a process/program that is not able to access sqlite3.a by using sockets through socat(1). Mike On Jun 22, 2014, at 9:47 AM, Adil Hasan wrote: > Hello, > I would like to add sqlite to a workflow. But, I cannot directly open the > database in C using the fil

Re: [sqlite] Multiprocess accessing SQLite connection

On Fri, 14 Jun 2013, Richard Hipp might have said: > On Fri, Jun 14, 2013 at 9:10 AM, Vijay Khurdiya < > vijay.khurd...@securetogether.com> wrote: > > > Please confirm below statement is TRUE when Sqlit3 configure in thread > > safe mode. (I am checking for Serialized) > > > > "Multiple processes