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JavaScript op.eq

MarkLogic 12 Product Documentation
op:eq

op:eq(
   $left as item()+,
   $right as item()
) as map:map

Summary

This function takes two or more expressions and returns true if all of the expressions return the same value. Otherwise, it returns false. The expressions can include calls to the op:col function to get the value of a column.

As a convenience, you can pass a sequence of any number of expressions as the first argument: op:eq((expr1, expr2, ..., exprN))

Parameters
$left The left value expression. It can be a number, a column function such as op:col, op:view-col, or op:schema-col, or an expression.
$right The right value expression. It can be a number, a column function such as op:col, op:view-col, or op:schema-col, or an expression.

Usage Notes

For convenience in the case of a simple comparison, the op:eq() operator can also take two expressions as separate arguments instead of a sequence of multiple expressions as a single argument.

Example

xquery version "1.0-ml";

import module namespace op="http://marklogic.com/optic"
     at "/MarkLogic/optic.xqy";

op:from-view("main", "employees")
   => op:where(op:eq(op:col("EmployeeID"), 3))
   => op:select(("EmployeeID", "FirstName", "LastName"))
   => op:order-by("EmployeeID")
   => op:result()

Example

xquery version "1.0-ml";

import module namespace op="http://marklogic.com/optic"
     at "/MarkLogic/optic.xqy";

let $eployeeId := 3
return op:from-view("main", "employees")
   => op:where(op:eq((op:col("EmployeeID"), 3, $employeeId)))
   => op:select(("EmployeeID", "FirstName", "LastName"))
   => op:order-by("EmployeeID")
   => op:result()

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