`conjsel(L)`

Returns a selection expression that consists of the conjunction of the pairs of columns and associated values specified in the given list-value. (Available as of version 11.06)

Description

This function is generally intended for use with the value of the listvalue_ attribute returned by the querytree widget. Together with the expanded selection form for <sel> introduced in version 11.05, this allows efficient application of a querytree-generated selection. For more information, see class_="querytree" and <sel>.

Syntax

conjsel(L)

Input

Argument	Type	Description
`L`	list-value	A list-value that consists of `n` lists. Each list is made up of a column and a list of values.

Return Value

Returns a selection expression of the form ([EXPR_1])&([EXPR_2])&...&([EXPR_n]), where each [EXPR_x] is of the form [COLUMN]=[LIST_OF_VALUES].

Example

The following example demonstrates how conjsel(L) function builds a selection expression from the given list-value. In this example, conjsel(L) creates the expression (state='NY''CA''TX')&(tz='-5''-6') from the list-value selections.

<dynamic selections="{lst(lst('state' lst('NY''CA''TX'))lst('tz' lst('-5''-6')))}">
  <layout arrange_="v">
    <widget class_="value" value_="@selections"/>
    <widget class_="text" text_="conjsel: {conjsel(@selections)}"/>
    <widget class_="grid" base_="pub.demo.weather.stations">
      <sel value="{conjsel(@selections)}"/>
    </widget>  
  </layout>
</dynamic>