I don't know if this helps, as I don't know what you are attempting to do with nr, but maybe it will. Also, when you insert a new row, you can get the rowid assigned by SQLite using "SELECT last_insert_rowid()". You can access the rowid of any row directly as "rowid", "_rowid_" or "oid". ![]() The sole purpose of autoincrement in SQLite is to not reuse previously used record numbers (whether they have been deleted or not). In the first case, SQLite tracks maxrowid over the life of the database, and any new record is assigned maxrowid + 1 where maxrowid is the maximum rowid ever seen. So, for the second condition, for a new row, rowid = max(rowid) + 1. But making modifications to this table will likely perturb the AUTOINCREMENT key generation. The content of the SQLITESEQUENCE table can be modified using ordinary UPDATE, INSERT, and DELETE statements. If you don't use autoincrement, then SQLite assigns a rowid that is one higher than the current max rowid in use. The SQLITESEQUENCE table is created and initialized automatically whenever a normal table that contains an AUTOINCREMENT column is created. Generally, the auto increment property in SQLite can only work with numeric data types and its very useful to use with primary key constraints. Hi Glenn, as I understand it, autoincrement always chooses a number that is one higher than the highest rowid ever used in the database. In SQLite if we set auto increment property on column it will generate sequential unique numeric values automatically whenever we insert a new record or row in the table. Your code works as expected in that I see the change of value in `sqlite_sequence`.`seq`, but the autoincrement of the database stubbornly refuses to update!
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |