diff --git a/lib/cartodb/utils/query-utils.js b/lib/cartodb/utils/query-utils.js
index e288cb32..8ef03c34 100644
--- a/lib/cartodb/utils/query-utils.js
+++ b/lib/cartodb/utils/query-utils.js
@@ -98,58 +98,6 @@ function columnSelector(columns) {
     throw new TypeError(`Bad argument type for columns: ${typeof columns}`);
 }
 
-module.exports.getQuerySample = function (query, sampleProb, limit = null, randomSeed = 0.5, columns = null) {
-    const singleTable = simpleQueryTable(query);
-    if (singleTable) {
-        return getTableSample(singleTable.table, columns || singleTable.columns, sampleProb, limit, randomSeed);
-    }
-    const limitClause = limit ? `LIMIT ${limit}` : '';
-    return `
-        WITH __cdb_rndseed AS (
-            SELECT setseed(${randomSeed})
-        )
-        SELECT ${columnSelector(columns)}
-            FROM (${substituteDummyTokens(query)}) AS __cdb_query
-            WHERE random() < ${sampleProb}
-            ${limitClause}
-    `;
-};
-
-function getTableSample(table, columns, sampleProb, limit = null, randomSeed = 0.5) {
-    const limitClause = limit ? `LIMIT ${limit}` : '';
-    sampleProb *= 100;
-    randomSeed *= Math.pow(2, 31) - 1;
-    return `
-        SELECT ${columnSelector(columns)}
-        FROM ${table}
-        TABLESAMPLE BERNOULLI (${sampleProb}) REPEATABLE (${randomSeed}) ${limitClause}
-    `;
-}
-
-function simpleQueryTable(sql) {
-    const basicQuery =
-        /\s*SELECT\s+([\*a-z0-9_,\s]+?)\s+FROM\s+((\"[^"]+\"|[a-z0-9_]+)\.)?(\"[^"]+\"|[a-z0-9_]+)\s*;?\s*/i;
-    const unwrappedQuery = new RegExp('^' + basicQuery.source + '$', 'i');
-    // queries for named maps are wrapped like this:
-    var wrappedQuery = new RegExp(
-        '^\\s*SELECT\\s+\\*\\s+FROM\\s+\\(' +
-        basicQuery.source +
-        '\\)\\s+AS\\s+wrapped_query\\s+WHERE\\s+\\d+=1\\s*$',
-        'i'
-    );
-    let match = sql.match(unwrappedQuery);
-    if (!match) {
-        match = sql.match(wrappedQuery);
-    }
-    if (match) {
-        const columns = match[1];
-        const schema = match[3];
-        const table = match[4];
-        return { table: schema ? `${schema}.${table}` : table, columns };
-    }
-    return false;
-}
-
 module.exports.getMaxMinSpanColumnQuery = function (query, column = 'cartodb_id') {
     return `
         SELECT