Lines Matching refs:variables

71 **Patterns**: You can use variables and literals to describe what data you want to match. The patterns should be written down in lines, with each line formatted like ''subject field: value''.
83 You can only compare variables that are used in a pattern.
126 **Grouping**: By adding a ''group'' block zero or more variables can be grouped. This means that all results that have the same value for the grouped variable will be merged, and the ungrouped variables will contain multiple values. You can name one variable per line. If the ''group'' is empty //all// results will be merged into a single result.
128 **Sorting**: By adding ''sort'' you can define one or more variables to sort on. You can name one variable per line, and include a direction with ''(ascending)'' or ''(descending)'' (or their short-hands ''(asc)'' and ''(desc)'').
229 You can use variables, indicated by starting with ''?'', and literals in any position.
245 [[#Types]] can only be added to variables. A variable in the subject position will always be typed as [[#types|ref]]. Literals can't be typed, but will be interpreted according to the variables they are used with.
250   * variables in the subject position are always of type [[#type|ref]] (and the ref type will stick)
261 It is possible to use both variables and literals for left and right, but there must be at least one variable present. You can only use variables that are used in a pattern in the same block or inner blocks (with the exception of [[#minus]] blocks, which don't bind any variables).
291 The ''~>'' and ''!~>'' operators are special cases of ''^~'' and ''!^~'' that use the [[#types|text]] type when comparing a left-sided variable to a right-sided literal, regardless of the variable's type. The use of these two operators makes most sense when comparing variables with the [[#types|ref]] or [[#types|page]] types.
341 You can sort on one or more variables.
352 Grouping on one or more variables allows you to create overviews.
358 Grouping allows you to collapse multiple results into a single result. All results that have the same value for all variables mentioned in the group block will be merged into a single result. Any variable in the merged result that is not mentioned in the group block will contain multiple values.
363 To define the variables to display, you can use the shorthand or the long syntax:
377 Any variables not mentioned in the projection are left out of consideration for determining what the results are. This might create a problem where simple results from a complex query seem incomplete, in that case try [[#Considering fields]].
382 Aggregation functions are used to process a variables captured values before display. These functions can be used for things like counting, summing up or reducing the values to only the unique values.
395 All variables mentioned will be considered to be relevant, even if they are not displayed. Since the queries use so called 'set semantics', results that are equivalent will be reduced to a single result. This can be prevented by declaring additional variables to be considered; results are only equivalent if all displayed and all considered fields are equal.
558 Aggregates are used on displays of variables. They are attached to the variable with ''@'', for example: ''?x@unique'' applies the unique aggregate to the values of variables ''?x''. Aggregates can be passed a hint by adding the hint between parenthesis: ''?variable@aggregate(hint)''.