operator

CloudBase JS SDK provides complete database operation capabilities. This article will focus on introducing query-related capabilities.

The db.command object is used to specify database operators. We generally define the command as follows for ease of use:

import cloudbase from "@cloudbase/js-sdk";

const app = cloudbase.init({
  env: env: "your-env-id", // Replace with your environment id
});

const db = app.database();
const _ = db.command;

query operator

operator	description	example
eq	equal	_.eq(value)
neq	not equal	_.neq(value)
gt	greater than	_.gt(value)
gte	greater than or equal to	_.gte(value)
lt	less than	_.lt(value)
lte	less than or equal to	_.lte(value)
in	in array	_.in([value1, value2])
nin	not in array	_.nin([value1, value2])
and	logical AND	_.and(condition1, condition2)
or	logical OR	_.or(condition1, condition2)

Field Update Operators

operator	description	example
set	set field value	_.set(value)
inc	increment	_.inc(1)
mul	multiply a numeric value	_.mul(2)
remove	remove field	_.remove()
push	append to array	_.push(value)
pop	remove from end of array	_.pop()
unshift	prepend to array	_.unshift(value)
shift	remove from beginning of array	_.shift()

Geolocation Operators

Operator	Description	Example
geoNear	Query nearby locations by distance	_.geoNear(options)
geoWithin	Query locations within a specified region	_.geoWithin(options)
geoIntersects	Query locations that intersect with a specified geometry	_.geoIntersects(options)