implementation #132

lib/model/table/AzuriteTableRequest.js

@@ -90,17 +90,22 @@ class AzuriteTableRequest {
             .replace(/\bne\b/g, '!==')
             .replace(/\band\b/g, '&&')
             .replace(/\bor\b/g, '||')
-            .replace(/\bnot\b/g, '!');
+            .replace(/\(/g, ' ( ')
+            .replace(/\)/g, ' ) ')
+            .replace(/\bnot\b/g, ' ! ');
 
         // If a token is neither a number, nor a boolean, nor a string enclosed with quotation marks it is an operand.
         // Operands are attributes of the object used within the where clause of LokiJS, thus we need to prepend each
         // attribute with an object identifier 'item.attribs'.
         let transformedQuery = '';
         for (const token of filter.split(' ')) {
+            if (token === '') {
+                continue;
+            }
             if (!token.match(/\d+/) &&
                 token !== 'true' && token !== 'false' &&
                 !token.includes('`') &&
-                !['===', '>', '>=', '<', '<=', '!==', '&&', '||', '!'].includes(token)) {
+                !['===', '>', '>=', '<', '<=', '!==', '&&', '||', '!', '(', ')'].includes(token)) {
                 if (token === 'PartitionKey' || token === 'RowKey') {
                     transformedQuery += `item.${token} `;
                 } else {