The following queries can be used to return duplicate rows in SQLite.
Here, the duplicate rows contain duplicate values across all columns, including the ID column.
DBMS
Database Management Systems
MariaDB EXCEPT Operator Explained
In MariaDB, the EXCEPT operator returns rows from the left input query that aren’t output by the right input query.
Another way of putting it is that it returns all rows from the left SELECT result set except rows that are in right SELECT result set.
3 Ways to Create a Table if it Doesn’t Already Exist in Oracle
The very useful CREATE TABLE IF NOT EXISTS syntax was finally introduced in Oracle Database – Oracle Database 23c to be precise. This syntax allows us to run a CREATE TABLE statement without getting an error if the table already exists.
Earlier versions of Oracle don’t support the IF NOT EXISTS clause, and so if we want to avoid any nasty errors resulting from trying to create a table that already exists, we need to do a bit of extra work.
Find Values That Don’t Contain Numbers in MySQL
If you need to return all rows that don’t contain any numbers, the following might help.
Strictly speaking, numbers can be represented by words and other symbols, but for this article “number” simply means “numerical digit”. So we’re finding values that don’t contain any numerical digits.
4 Ways to Select Duplicate Rows in PostgreSQL
If you have a table with duplicate rows in PostgreSQL, you can use any of the following queries to return the duplicate rows.
2 Ways to Return Rows that Contain Only Alphanumeric Characters in Oracle
Below are two methods for returning rows that only contain alphanumeric characters in Oracle Database.
Alphanumeric characters are alphabetic characters and numeric characters.
4 Ways to List All Views in a MariaDB Database
Below are four ways to list out the views in a MariaDB database using SQL or the command line.