Query

Control Flow

• Grouping with ( and )
• Chaining with and and or
  • NO mixing! Be explicit and use grouping.
• Negation with not
  • in front of expression for group: not (...)
  • inside expression for clause: name not matches "^King "

Selectors

Supported by all feeders:

• root level field: field
• sub level field: field.sub
• array/slice/map access: map.0
• array/slice/map length: map.#

Please note that some feeders may have other special characters. It is advised to only use alphanumeric characters for keys.

Operators

Name	Textual	Req. Type	Internal Type	Compared with
Equals	==	int	int64	==
GreaterThan	>	int	int64	>
GreaterThanOrEqual	>=	int	int64	>=
LessThan	<	int	int64	<
LessThanOrEqual	<=	int	int64	<=
FloatEquals	f==	float	float64	==
FloatGreaterThan	f>	float	float64	>
FloatGreaterThanOrEqual	f>=	float	float64	>=
FloatLessThan	f<	float	float64	<
FloatLessThanOrEqual	f<=	float	float64	<=
SameAs	sameas, s==	string	string	==
Contains	contains, co	string	string	strings.Contains()
StartsWith	startswith, sw	string	string	strings.HasPrefix()
EndsWith	endswith, ew	string	string	strings.HasSuffix()
In	in	string	string	for loop with ==
Matches	matches, re	string	string	regexp.Regexp.Matches()
Is	is	bool*	bool	==
Exists	exists, ex	any	n/a	n/a

*accepts strings: 1, t, T, true, True, TRUE, 0, f, F, false, False, FALSE

Escaping

If you need to use a control character within a value (ie. not for controlling), escape it with \. It is recommended to wrap a word into parenthesis instead of escaping control characters, when possible.

Location	Characters to be escaped
Within parenthesis (")	", \
Everywhere else	(, ), ", \, \t, \r, \n, (space)