The rowid column store 64-bit signed integer that uniquely identifies a row in the table. We can auto increment a field value by using AUTOINCREMENT keyword when creating a table with specific column name to auto increment. Whenever you create a table without specifying the WITHOUT ROWID option, you get an implicit auto-increment column called rowid.
return The next AUTOINCREMENT value fortableName If an INSERT. I don't know if this helps, as I don't know what you are attempting to do with nr, but maybe it will. That is, all AUTOINCREMENT does is add a constraint that requires the value assigned to the column to be higher than any existing value, or higher than any value that has been used, in that column. SQLite AUTOINCREMENT is a keyword used for auto incrementing a value of a field in the table. Here is what I use to get the next AUTOINCREMENT value for a specific table: / Query sqlitesequence table and search for the AUTOINCREMENT value for tableName param tableName The table name with which the AUTOINCREMENT value is associated. Also, when you insert a new row, you can get the rowid assigned by SQLite using "SELECT last_insert_rowid()". define my table primary key values here is the query to create table: CREATE TABLE form ( id INTEGER PRIMARY KEY AUTOINCREMENT,name TEXT NOT NULL ,addr TEXT. You can access the rowid of any row directly as "rowid", "_rowid_" or "oid". I have a column named id in my SQLite database which is auto-increment, Primary Key, Unique. it could alternatively use SET mycolumn 'myprefix'rowid. The TRIGGER is actioned whenever a row is inserted and in this case it mimics what the SQLite auto-generation of the rowid value does prefixing the value. The sole purpose of autoincrement in SQLite is to not reuse previously used record numbers (whether they have been deleted or not). This creates a table along with a TRIGGER and then inserts the same data as above. 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.
CREATE TABLE people (id integer primary key autoincrement, firstname varchar(20). So, for the second condition, for a new row, rowid = max(rowid) + 1. Now, looking back at your query, it should be something like this. If you don't use autoincrement, then SQLite assigns a rowid that is one higher than the current max rowid in use. Hi Glenn, as I understand it, autoincrement always chooses a number that is one higher than the highest rowid ever used in the database.
SQLITE AUTOINCREMENT SELECT CODE
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!
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