Valid literal consist of these kinds of values:
true or false, case-insensitive, and in CQL, enclosure in single quotation marks is not required prior to Cassandra 1.2.2. In 1.2.2 and later, using quotation marks is not allowed.
- numeric constant
A numeric constant can consist of integers 0-9 and a minus sign prefix. A numeric constant can also be float. A float can be a series of one or more decimal digits, followed by a period, ., and one or more decimal digits. There is no optional + sign. The forms .42 and 42 are unacceptable. You can use leading or trailing zeros before and after decimal points. For example, 0.42 and 42.0. A float constant, expressed in E notation, consists of the characters in this regular expression:
A letter followed by any sequence of letters, digits, or the underscore. Names of tables, columns, and other objects are identifiers. Enclose them in double quotation marks.
An optional minus sign, -, followed by one or more digits.
- string literal
Characters enclosed in single quotation marks. To use a single quotation mark itself in a string literal, escape it using a single quotation mark. For example, use '' to make dog plural: dog''s.
32 hex digits, 0-9 or a-f, which are case-insensitive, separated by dashes, -, after the 8th, 12th, 16th, and 20th digits. For example: 01234567-0123-0123-0123-0123456789ab
Uses the time in 100 nanosecond intervals since 00:00:00.00 UTC (60 bits), a clock sequence number for prevention of duplicates (14 bits), plus the IEEE 801 MAC address (48 bits) to generate a unique identifier. For example: d2177dd0-eaa2-11de-a572-001b779c76e3
Separates terms and used inside string literals, but otherwise CQL ignores whitespace.