An expression is a combination of one or more values, operators, and SQL functions that evaluate to a value. You can use expressions in the Where, and Having of Select statements; and in the Set clauses of Update statements.
Expressions enable you to use mathematical operations as well as character string manipulation operators to form complex queries.
The driver supports both unquoted and quoted identifiers. An unquoted identifier must start with an ASCII alpha character and can be followed by zero or more ASCII alphanumeric characters. Unquoted identifiers are converted to uppercase before being used.
Quoted identifiers must be enclosed in double quotation marks (""). A quoted identifier can contain any Unicode character including the space character. The driver recognizes the Unicode escape sequence \uxxxx as a Unicode character. You can specify a double quotation mark in a quoted identifier by escaping it with a double quotation mark.
The maximum length of both quoted and unquoted identifiers is 128 characters.
Column names
