@opengis/bi/server/routes/data/controllers/util/chartSQL.js

BI data visualization module

function number({ metric, where, table, samples, fx }) {
  const sql = `select ${fx || metric} from ${table} where ${where} ${samples ? 'limit 10' : ''}`;
  return sql;
}
function table({ columns = [], table, where, samples }) {
  const cols = Array.isArray(columns)
    ? columns.map((el) => `"${(el.name || el).replace(/'/g, "''")}"`).join(',')
    : Object.keys(columns).map(key => `"${key.replace(/'/g, "''")}"`).join(',');
  return `select ${cols || '*'} from ${table} where ${where} ${samples ? 'limit 10' : 'limit 20'} `;
}

function chart({
  metric,
  yType, // metric type
  where,
  table,
  x,
  groupby,
  groupData,
  order,
  samples,
  limit = 100,
  xType,
  fx, // agg function
}) {
  const xCol = x && xType?.includes('[]') ? `unnest(${x})` : x;

  const metricData =
    groupData
      ?.filter(el => el.name)
      ?.map(
        (el) =>
          `${metric} filter (where '${el.name.toString().replace(/'/g, "''")}'=${yType?.includes('[]') ? `any(${groupby.replace(/'/g, "''")}::text[])` : groupby.replace(/'/g, "''")}) as "${el.name.toString().replace(/'/g, "''")}"`
      )
      .join(',') || `${fx || metric} as metric`;
  const sql = `select ${xCol} ${x && xType?.includes('[]') ? `as ${x}` : ''}, ${metricData} 
    from ${table}
    where ${where} 
    ${xCol ? `group by ${xCol}` : ''}
    ${order || xCol ? `order by ${order || xCol}` : ''}
    ${samples ? 'limit 10' : `limit ${limit}`}`;
  return sql;
}

function text() {
  return undefined;
}

export default { number, chart, table };