Is it possible to find out if a Firebird table has an auto-increment column? Answer Firebird 2.5 and earlier do not have auto-increment columns, and this is usually worked around by using triggers and sequences (a.k.a. generators), as shown on this page. There is no general way to detect this style of auto-increment column (though in specific cases, you may
Tag: auto-increment
autoincrement number function-postgres
i have a table like this: id person 20 adams 20 george 40 jina 46 rico 80 naya 90 john 90 peter 90 richard i want to find a way to select a new_id starting from 1 and increazing +1 every time id is different. for example i want a select with a result like this: new_id id person 1
Data type “smallserial” in Postgres not highlighted in Visual Studio Code
I am new to postgres, and I am using Visual Studio Code IDE (version 1.62) to write my scripts. While doing so, I am observing this strange behaviour where VS Code doesn’t highlight the data type smallserial (2 bytes). Here is what I see: But I know that the script is correct because this query runs successfully. How can I
How to set an autoincrement composite primary key in oracle19c?
I want to create a table, with composite primary key and autoincrement, in Oracle 19c, like this: How I do it? Answer Create trigger on this table to achieve this result. Assume table name is test123
Change mysql auto increment id column value
I have a mysql table with an gpid AUTO_INCREMENT NOT NULL UNIQUE column. After filling this table (which has 50M+ entries), I have realized that mysql still increments AUTO_INCREMENT columns if transaction fails because of an IntegrityError, and understandably so. The results are gaps in AUTO_INCREMENT columns, with gpid jumping values (for exemple from gpid == 3 to gpid ==
When issuing a command to MySQL, I’m getting that error “#1075 – Incorrect table definition;”
CREATE TABLE onscreen( id int(2) not null AUTO_INCREMENT, subject varchar(100) not null, content varchar(100) not null, date datetime not null );
How to use nextval() to insert a row containing its own ID in a string
I have a table that contains a column with a string containing its own ID. How can I insert a new line using a single SQL statement? I need something like https://www.db-fiddle.com/f/3NwLNBirN7mHKpDk9NyHSy/1 Answer One option is to select the next serial in a subquery first: You could also use a computed column instead would make for cleaner insert code: Gives
Auto-increment vs manual incrementing in SQL [closed]
I’m not a database expert, but I’m curious about auto-incrementing in SQL. Is it efficient, a friend of mine, his opinions, he’s not using auto-incrementing instead he’s taking the last id every time …
Updating sequence for primary key in postgres for a table with a lot of deletions
I have the following problem: I have a table with a lot of deletions and inserts of rows. Also I would like to assign to each of current rows in tables some id number. Currently I’m trying to do it with But if I understand correctly, sequences are monotonous and can’t go down when i delete some rows, so i
How to get the id from next inserted element before that is created?
I need to get the id from the future element insert in my table. I have an autoincrement id. await db.execute(‘CREATE TABLE Product(Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT)’); Imagine this …