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This can also be used to change the column to NULL if the column has no default and is defined to allow null values.

Compound assignment operator: = Add and assign -= Subtract and assign *= Multiply and assign /= Divide and assign %= Modulo and assign &= Bitwise AND and assign ^= Bitwise XOR and assign |= Bitwise OR and assign Returns updated data or expressions based on it as part of the UPDATE operation.

It discusses how to refer to elements of databases, including the rules for naming and the case sensitivity constraints that apply.

It also describes many of the more important SQL statements that are used for the following types of operations: My SQL's SQL statements can be grouped into several broad categories; Table 3.1 lists some representative statements for each.

For example, when you use a program such as the mysql client, it functions primarily as a means for you to send SQL statements to the server to be executed.

You must also know SQL if you write programs that use the My SQL interface provided by your programming language because the interface functions as the means that allows you to communicate with the server by sending SQL statements to it.

TOP ( ) Specifies one or more table hints that are allowed for a target table. @ When referencing the Unicode character data types nchar, nvarchar, and ntext, 'expression' should be prefixed with the capital letter ' N'.

If ' N' is not specified, SQL Server converts the string to the code page that corresponds to the default collation of the database or column.

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Fluency with SQL is necessary for effective communication with the My SQL server, because that is the language that it understands.

Common table expressions can also be used with the SELECT, INSERT, DELETE, and CREATE VIEW statements.

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