What does the P do in SQL?
2 Answers. It’s just an abbreviation to use instead of always using the full table names. If you don’t use an alias here, the query will give you an error.
What is P in mysql?
Because letter -p meaning mysql password 😉 – Piyush Gupta.
What does AP mean in SQL?
Stored procedure exercise AP database SQL.
What does (+) mean in SQL joins?
Oracle outer join operator (+) allows you to perform outer joins on two or more tables.
What is G in SQL?
Short Answer. The ubiquitous semicolon command terminator ; is actually shorthand for the g command, which is in itself shorthand for the go command. The go command is used both historically and currently in other flavours of SQL to submit batches of commands to be compiled and / or interpretted by the server.
How do I start MySQL?
Launch the MySQL Command-Line Client. To launch the client, enter the following command in a Command Prompt window: mysql -u root -p . The -p option is needed only if a root password is defined for MySQL. Enter the password when prompted.
What is parameter in MySQL?
In general, a parameter is a placeholder for a variable that contains some value of some type when executing a general-purpose query, or arguments and return values when a stored procedure is executed. Parameter is represented by MySql. MySqlParameter class.
Is MySQL AP or CP?
For example, MySQL can be CP and CA depending on the configurations. By default, it is CA because it follows a master slave paradigm which data is replicated to the slaves.
What does L in SQL mean?
In most cases, it is simply a way to shorten your statement, because you can use a shorter name in place of a full table name. However, in some instances an alias is required: when you need to reference the same table more than once in the same query, you must create an alias to disambiguate your statement.
What is self join?
A self JOIN is a regular join, but the table is joined with itself – this is extremely useful for comparisons within a table. Joining a table with itself means that each row of the table is combined with itself and with every other row of the table.
How can we insert data into a view?
You can insert rows into a view only if the view is modifiable and contains no derived columns. The reason for the second restriction is that an inserted row must provide values for all columns, but the database server cannot tell how to distribute an inserted value through an expression.