Re: [sqlite] Data structure for versioned data
Not quite the same issue, but I've set up triggers to generate a journal record whenever a record is added/changed/deleted from a table. This mechanism (triggers) could easily be used to generate a 'version' record. *** Doug F. John Stanton wrote: > We perform some versioning by holding column material in XML and using > RCS to maintain reverse deltas and versions. > > Samuel R. Neff wrote: >> Not specific to SQLite, but we're working on an app that needs to keep >> versioned data (i.e., the current values plus all previous values). The >> versioning is integral to the app so it's more than just an audit >> trail or >> history. >> >> Can anyone share experiences with the database structure for this >> type of >> requirement or point me to helpful resources? >> >> Thanks, >> >> Sam >> >> >> >> --- >> We're Hiring! Seeking a passionate developer to join our team building >> products. Position is in the Washington D.C. metro area. If interested >> contact [EMAIL PROTECTED] >> >> >> >> - >> >> To unsubscribe, send email to [EMAIL PROTECTED] >> - >> >> > > > - > > To unsubscribe, send email to [EMAIL PROTECTED] > - > > - To unsubscribe, send email to [EMAIL PROTECTED] -
[sqlite] help - sqlite3_get_table returns SQLITE_ROW?
I have a sqlite3_get_table query that sometimes returns error code 100 ( SQLITE_ROW). Can someone explain what condition would cause this - I didn't think that this return code would happen for this function, since it should fill up the 'results' table. The query sometimes works, sometimes not... this is in a 'busy' application, it is not clear what condition causes this return code. It is *possible* that there is a locking problem, but I would have expected a different code (e.g.: SQLITE_BUSY). There is only one process, and only one open connection to the database. The query does not return a large amount of data - 1 or 2 K at most. System resources (i.e.: memory and disk) are more than adequate for the task. Some additional information: This is sqlite version is 3.3.4. nrows and ncols are both 0. result does not appear to be set to 'real' data. sqlite3_errmsg(db) returns an empty string. Thanks *** Doug Fajardo
[sqlite] alter table syntax ?
Help! I keep getting a syntax error from the 'alter table' sql command, when used to add a column to a table. Can someone help with this error? Below is an example of one attempt, and its results: [tuna]$ sqlite test2.db SQLite version 2.8.16 Enter ".help" for instructions sqlite> create table x1 ( name ); sqlite> alter table x1 add column ( phone ); SQL error: near "alter": syntax error sqlite>
