Add prefix to bins_array to avoid name collision

lib/cartodb/models/dataview/histogram.js

@@ -211,8 +211,8 @@ var dateOverrideBasicsQueryTpl = dot.template([
 var dateBinsQueryTpl = dot.template([
     'bins AS (',
     '    SELECT',
-    '        bins_array,',
-    '        ARRAY_LENGTH(bins_array, 1) AS __cdb_bins_number',
+    '        __cdb_bins_array,',
+    '        ARRAY_LENGTH(__cdb_bins_array, 1) AS __cdb_bins_number',
     '    FROM (',
     '       SELECT',
     '           ARRAY(',
@@ -221,9 +221,9 @@ var dateBinsQueryTpl = dot.template([
     '                   __cdb_end_date::timestamptz,',
     '                   {{?it._aggregation==="quarter"}}\'3 month\'{{??}}\'1 {{=it._aggregation}}\'{{?}}::interval',
     '                )',
-    '           ) AS bins_array',
+    '           ) AS __cdb_bins_array',
     '       FROM basics',
-    '    ) _cdb_bins_array',
+    '    ) _cdb_bins_array_query',
     ')'
 ].join('\n'));
 
@@ -237,7 +237,7 @@ var dateHistogramQueryTpl = dot.template([
     '      ELSE GREATEST(1, LEAST(',
     '        WIDTH_BUCKET(',
     '          {{=it._column}}::timestamp AT TIME ZONE \'{{=it._offset}}\',',
-    '          bins_array',
+    '          __cdb_bins_array',
     '        ),',
     '        __cdb_bins_number',
     '      )) - 1',