winnow/lib/sql-query-builder/select/index.js

Apply sql-like filters to GeoJSON

const createAggregationSelect = require('./aggregation-select')
const createGeometrySelectFragment = require('./geometry-select-fragment')
const createFieldsSelectFragment = require('./fields-select-fragment')

function createSelectSql (options = {}) {
  if (options.aggregates) return createAggregationSelect(options.aggregates, options.groupBy, options.esri)

  return createStandardSelect(options)
}

function createStandardSelect (options) {
  const select = options.distinct ? 'SELECT DISTINCT' : 'SELECT'

  const fieldsList = createFieldsSelectFragment(options)

  if (options.returnGeometry === false) {
    return (`${select} ${fieldsList} FROM ?`)
  }

  return (`${select} ${fieldsList}, ${createGeometrySelectFragment(options)} FROM ?`)
}

module.exports = createSelectSql