How to insert data to MySQL with auto-incremented column(field)?
14 Check out this post According to it No value was specified for the AUTO_INCREMENT column, so MySQL assigned sequence numbers automatically. You can also explicitly assign NULL or 0 to the …
What is the difference between prefix and postfix operators?
There is a big difference between postfix and prefix versions of ++. In the prefix version (i.e., ++i), the value of i is incremented, and the value of the expression is the new value of i. In the postfix version …
SQL Server add auto increment primary key to existing table
7 This answer is a small addition to the highest voted answer and works for SQL Server. The question requested an auto increment primary key, the current answer does add the primary key, but it is not …
How to create id with AUTO_INCREMENT on Oracle?
It appears that there is no concept of AUTO_INCREMENT in Oracle, up until and including version 11g. How can I create a column that behaves like auto increment in Oracle 11g?
ALTER table - adding AUTOINCREMENT in MySQL - Stack Overflow
I created a table in MySQL with on column itemID. After creating the table, now I want to change this column to AUTOINCREMENT. How can this be done using ALTER statements? Table definition: …
Auto increment primary key in SQL Server Management Studio 2012
Jun 12, 2012 · The MS SQL Server uses the IDENTITY keyword to perform an auto-increment feature. In the example above, the starting value for IDENTITY is 1, and it will increment by 1 for each new …
Set start value for column with autoincrement - Stack Overflow
In the Table Designer on SQL Server Management Studio you can set the where the auto increment will start. Right-click on the table in Object Explorer and choose Design, then go to the Column …
How to reset AUTO_INCREMENT in MySQL - Stack Overflow
Jan 19, 2012 · How can I reset the AUTO_INCREMENT of a field? I want it to start counting from 1 again.
How to set auto increment primary key in PostgreSQL?
It seems in postgressql, to add a auto increment to a column, we first need to create a auto increment sequence and add it to the required column. I did like this. 1) Firstly you need to make sure there is a …
Is there a performance difference between i++ and ++i in C++?
Aug 24, 2008 · When there is no functional difference between pre-increment and post-increment, the compiler can perform optimization such that there is no performance difference between the two.