"cx01_descricaolancamento,cx01_tipolancamento) \Ĭonn. "(cx01_registro INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,"Ĭonn.execute("INSERT INTO TABCOD (cx01_registro,cx01_codigolancamento," The keyword AUTOINCREMENT can be used with INTEGER field only. We can auto increment a field value by using AUTOINCREMENT keyword when creating a table with specific column name to auto incrementing it. INTEGER PRIMARY KEY AUTOINCREMENT NOT NULLįor example: cx01_registro = 0 # pic 9(06)Ĭx01_descricaolancamento = "" # pic x(15)Ĭx01_tipolancamento = "" # pic x(01) deposito retiradaĬ.execute("CREATE TABLE IF NOT EXISTS TABCOD" SQLite AUTOINCREMENT is a keyword used for auto incrementing a value of a field in the table. I apologize for posting this as a new answer instead of commenting on the previous answer, but my reputation score is too low to add comments, and I thought that it was important to note that the alternate insert statement is not an adequate workaround. Sqlite> select * from logtable where ts = 222 Sqlite> INSERT into LOGTABLE (ts, level, message) VALUES (222, "autoinc test", "autoinc test") 3 Answers Sorted by: 0 You are not setting the id in your object d - Add this line in your for loop - d.setid (c.getInt (c. sqlite> create TABLE logTable (ID INTEGER PRIMARY KEY NOT NULL, ts REAL, level TEXT, message TEXT) It does work with the NOT NULL workaround. Sqlite> select * from logtable where ts = 111 Sqlite> INSERT into LOGTABLE (ts, level, message) VALUES (111, "autoinc test", "autoinc test") schema logTableĬREATE TABLE logTable (ID INTEGER PRIMARY_KEY, ts REAL, level TEXT, message TEXT) Here's an example - note that the ID field is not autoincremented even though I use the insert format that you specified above. The insert syntax provided above does not seem to work in the absence of not null. Otherwise, SQLite has no way of telling the difference between a NULL meaning "give me the next auto-increment value" and a NULL meaning "put a NULL value in serial_num because the column allows NULLs". contacts (id integer primary key autoincrement, name text, address text. A PRIMARY KEY column only becomes an integer primary key if the declared type name is exactly 'INTEGER'. For example, to create a new table in our database with elds to hold ID, name. Such a column is usually referred to as an 'integer primary key'. We could handle that case in sequelize, but it could also easily be handled in user code. To get the auto-increment value for serial_num. sqlite simply does not allow you to define an unsigned primary key. If you leave out the not null, you need to do your inserts like this: insert into dummy (name) values (?) The documentation on INTEGER PRIMARY KEY is a little unclear about what precisely is required for a column to be this special INTEGER PRIMARY KEY that auto-increments but the reality is that the column needs to be NOT NULL if you want to use the NULL value to mean "give me the next auto-incrementing value" when inserting: create table dummy ( We could change SQLite to conform to the standard (and we might do so in the future), but by the time the oversight was discovered, SQLite was in such wide use that we feared breaking legacy code if we fixed the problem. Unless the column is an INTEGER PRIMARY KEY SQLite allows NULL values in a PRIMARY KEY column. Unfortunately, due to a long-standing coding oversight, this is not the case in SQLite. From the fine manual:Īccording to the SQL standard, PRIMARY KEY should always imply NOT NULL. A few weeks ago my team was deep into sequelize's internals and we couldn't answer this properly.Īs I said, we solved with a simple conditional, but this particular github issue err on the practical side.This is one of SQLite's quirks. It's not a good design to use INTS when TINY/SMALL work, so how do you allow Sequelize models to express this but still work on other databases? Just some questions I had while using the ORM. But should these things be handled transparently, automatically converted, best guessing? Should Sequelize itself deny invalid model attributes on its sync, before it hits the database? The same can be said about Mysql's INT sub-types, such as MEDIUMINT. I understand Sequelize is an ORM, not a database abstraction library. And the later is documented, but I don't think it's simple a matter of documenting about sqlite UNSIGNED, because of the philosophical issue. You can't UNSIGNED a sqlite column, and you also can not ARRAY a non-Postgres column. In the sqlite3 faq, it is mentioned that an integer primary key being fed a null value would autoincrement. The practical is that Sequelize allows a certain combination of modeling that does not work, it generates invalid sql statements. But I think there are two issues here, one practical and one philosophical. I am doing it because our code runs both on Mysql and sqlite, so yeah, I am handling in user code.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |