1. Sqlite Serial 1
2. Sqlite Serial Data Type

Sqlite Serial 1

You get one for free, called ROWID. This is in every SQLite table whether you ask for it or not. If you include a column of type INTEGER PRIMARY KEY, that column points at (is an alias for) the automatic ROWID column.

ROWID (by whatever name you call it) is assigned a value whenever you INSERT a row, as you would expect. If you explicitly assign a non-NULL value on INSERT, it will get that specified value instead of the auto-increment. If you explicitly assign a value of NULL on INSERT, it will get the next auto-increment value. Also, you should try to avoid: INSERT INTO people VALUES ('John', 'Smith'); and use INSERT INTO people (firstname, lastname) VALUES ('John', 'Smith'); instead. The first version is very fragile — if you ever add, move, or delete columns in your table definition the INSERT will either fail or produce incorrect data (with the values in the wrong columns). ROWID isn't quite the same as a true autoincrement as the SAME value may be generated more than once. For example, with an empty table, inserting 3 rows gives the 3rd row a ROWID of 3 as expected.

However insert 2 rows, delete the last and insert another, gives the 3rd inserted row a ROWID of 2, just as the 2nd row had. There is therefore an obvious serious problem if tables reference ROWIDs in a table where deletes occur and where deletes or ROWID nulling are not also done in the related tables. – Aug 15 '15 at 13:37. SQLite AUTOINCREMENT is a keyword used for auto incrementing a value of a field in the table.

We can auto increment a field value by using AUTOINCREMENT keyword when creating a table with specific column name to auto incrementing it. The keyword AUTOINCREMENT can be used with INTEGER field only. Syntax: The basic usage of AUTOINCREMENT keyword is as follows: CREATE TABLE tablename( column1 INTEGER AUTOINCREMENT, column2 datatype, column3 datatype. ColumnN datatype, ); For Example See Below: Consider COMPANY table to be created as follows: sqlite CREATE TABLE TBCOMPANYINFO( ID INTEGER PRIMARY KEY AUTOINCREMENT, NAME TEXT NOT NULL, AGE INT NOT NULL, ADDRESS CHAR(50), SALARY REAL ); Now, insert following records into table TBCOMPANYINFO: INSERT INTO TBCOMPANYINFO (NAME,AGE,ADDRESS,SALARY) VALUES ( 'MANOJ KUMAR', 40, 'Meerut,UP,INDIA', 200000.00 ); Now Select the record SELECT.FROM TBCOMPANYINFO ID NAME AGE ADDRESS SALARY 1 Manoj Kumar 40 Meerut,UP,INDIA 200000.00.

Lexmark x215 treiber windows 7 64 bit. I know this answer is a bit late. My purpose for this answer is for everyone's reference should they encounter this type of challenge with SQLite now or in the future and they're having a hard time with it. Now, looking back at your query, it should be something like this. CREATE TABLE people (id integer primary key autoincrement, firstname varchar(20), lastname varchar(20)); It works on my end. Like so, Just in case you are working with SQLite, I suggest for you to check out. Works on different platforms as well.

SQLite autoincrement FAQ: How do I get the autoincrement value from my last SQLite INSERT command? You can get the integer value of the primary key field from the last insert into an autoincrement field using a SQLite function named lastinsertrowid, as shown in the example below. How to get the SQLite autoincrement (primary key) value after an insert Here’s a short, complete example of how this works. First, let’s assume we have a SQLite database table defined like this: CREATE TABLE salespeople ( id INTEGER PRIMARY KEY, firstname TEXT NOT NULL, lastname TEXT NOT NULL, commissionrate REAL NOT NULL ); As you can see, the id field is the PRIMARY KEY field for this SQLite table. (Note that this field is referred to as an autoincrement field, serial field, or identity column in other databases I have worked with.) Next, insert a record into this table, passing a null value into the SQLite autoincrement field: sqlite INSERT INTO salespeople VALUES (null, 'Fred', 'Flinstone', 10.0); Now, just use the SQLite lastinsertrowid function to get the value of the SQLite autoincrement field that was just generated: sqlite select lastinsertrowid; 2 In this case the result was 2, because this was the second record I’ve inserted into this table.

Sqlite Serial Data Type

I can verify that with a SQL SELECT statement: sqlite select. from salespeople; 1 Barney Rubble 10.0 2 Fred Flinstone 10.0.