Statements

A SQL statement can include one or more of the following parts:

• Clause, such as FROM
• Command, such as SELECT
• Expression, a combination of one or more values, operators, and SQL functions that evaluate a value. For example, users.firstname is a period expression.
• Function, scalar, and aggregate, such as sum
• Literal value
• Boolean
• Identifier
• Integer
• Numeric constant
• String
• Operator, such as NOT IN, LIKE, and AND
• Predicate, such as a > b in SELECT * FROM myfile WHERE a > b.
• Whitespace
• Comment in the following format:

    /* This is a comment. */