Re: [sqlite] select where value in
On 18 Nov 2010, at 1:22pm, Joseph Garry wrote: >> From: itandet...@mvps.org >> Joseph Garry wrote: >>> I'd like to set up a compiled sqllite (sqlite3_prepare_v2) statement with a >>> query like >>> 'select tabid, col1, col2 from table where tabid in (?)' >>> But how do I bind in the parameter here? An example would be welcome, of >>> course. >> >> You can't do that directly. One way is to create a temp table, like this: >> >> create temp table TabIdList (tabid integer); >> >> Now you can prepare this statement: >> >> select tabid, col1, col2 from myTable where tabid in (select tabid from >> TabIdList); >> >> Populate TabIdList with your list of IDs (you can use a prepared statement >> for this, too, along the lines of "insert into TabIdList(tabid) values (?); >> "). > That would work, but the thing I'm after here is speed. And I can't imagine > what you're suggesting would be very fast. Am I mistaken? Put an index on the 'tabid' field of myTable and it'll be pretty fast. (PS: I fixed the text order of your reply.) Simon. ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] select where value in
That would work, but the thing I'm after here is speed. And I can't imagine what you're suggesting would be very fast. Am I mistaken? > To: sqlite-users@sqlite.org > From: itandet...@mvps.org > Date: Thu, 18 Nov 2010 08:08:51 -0500 > Subject: Re: [sqlite] select where value in > > Joseph Garry wrote: > > I'd like to set up a compiled sqllite (sqlite3_prepare_v2) statement with a > > query like > > 'select tabid, col1, col2 from table where tabid in (?)' > > But how do I bind in the parameter here? An example would be welcome, of > > course. > > You can't do that directly. One way is to create a temp table, like this: > > create temp table TabIdList (tabid integer); > > Now you can prepare this statement: > > select tabid, col1, col2 from myTable where tabid in (select tabid from > TabIdList); > > Populate TabIdList with your list of IDs (you can use a prepared statement > for this, too, along the lines of "insert into TabIdList(tabid) values (?); > "). > -- > Igor Tandetnik > > ___ > sqlite-users mailing list > sqlite-users@sqlite.org > http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
Re: [sqlite] select where value in
Joseph Garry wrote: > I'd like to set up a compiled sqllite (sqlite3_prepare_v2) statement with a > query like > 'select tabid, col1, col2 from table where tabid in (?)' > But how do I bind in the parameter here? An example would be welcome, of > course. You can't do that directly. One way is to create a temp table, like this: create temp table TabIdList (tabid integer); Now you can prepare this statement: select tabid, col1, col2 from myTable where tabid in (select tabid from TabIdList); Populate TabIdList with your list of IDs (you can use a prepared statement for this, too, along the lines of "insert into TabIdList(tabid) values (?); "). -- Igor Tandetnik ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
[sqlite] select where value in
I'd like to set up a compiled sqllite (sqlite3_prepare_v2) statement with a query like 'select tabid, col1, col2 from table where tabid in (?)' But how do I bind in the parameter here? An example would be welcome, of course. ___ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
