Merge pull request #13 from brandsExclusive/is-null-support

Add is null support
lux-group · Apr 26, 2018 · 0a26a86 · 0a26a86
2 parents 3c7b732 + 9941598
commit 0a26a86
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Showing 2 changed files with 16 additions and 7 deletions.
diff --git a/lib/queryBuilder.js b/lib/queryBuilder.js
@@ -47,7 +47,8 @@ function queryBuilder(initial_state) {
           placeholder = "$" + bound_vars.push(`%${value}%`);
           statements.push(` ${column} ${operator} ${placeholder} `)
 
-
+        } else if ((operator == 'IS') && (value == 'NULL')) {
+          statements.push(`${column} IS NULL`)
         } else {
           placeholder = "$" + bound_vars.push(value);
           statements.push(` ${column} ${operator} ${placeholder} `)
@@ -68,9 +69,9 @@ function queryBuilder(initial_state) {
             if(orderParams.function == 'similarity'){
               column = similarity(column, orderParams.values.pop());
             }
-        }  
+        }
 
-        ordersBy.push(`${column} ${direction}`) 
+        ordersBy.push(`${column} ${direction}`)
       }
 
       sql = sql + " ORDER BY " + ordersBy.join(", ");
@@ -101,7 +102,7 @@ function queryBuilder(initial_state) {
     return this;
   };
   out.select = select.bind(out);
-  
+
   let addSelect = function (field) {
     this.state.select = this.state.select || [];
     this.state.select.push(field);
@@ -124,7 +125,7 @@ function queryBuilder(initial_state) {
     return this;
   };
   out.addOrderBy = addOrderBy.bind(out);
-  
+
   let addOrderByFunction = function (functionName, field, values, direction) {
     delete this.state.count;
     this.state.orderBy = this.state.orderBy || [];
@@ -139,7 +140,7 @@ function queryBuilder(initial_state) {
   let where = function (field, operator, value) {
     this.state.wheres = this.state.wheres || [];
     this.state.wheres.push([field, operator, value]);
-    
+
     return this;
   };
   out.where = where.bind(out);

diff --git a/test/queryBuilder_test.js b/test/queryBuilder_test.js
@@ -141,6 +141,14 @@ describe('queryBuilder', function() {
         ,["%Football%"]]).to.eql(query.finalize());
     });
 
+    it('should compose where IS NULL', function() {
+      query = queryBuilder();
+      query.from("sports");
+      query.where("name","IS", "NULL");
+      expect([
+        " SELECT * FROM sports  WHERE name IS NULL",[]]).to.eql(query.finalize());
+    });
+
     it('should compose multiple where in  with where like and where equals', function() {
       query = queryBuilder();
       query.from("banana");
@@ -196,7 +204,7 @@ describe('queryBuilder', function() {
         " SELECT first_name, last_name FROM banana  WHERE  species in ($1,$2)  AND  feeder = $3 "
         ,["cavendish","alchemist","ape"]]).to.eql(query.finalize());
     });
-    
+
     it('should compose custom select fields and several orders', function() {
       query = queryBuilder();
       query.from("banana");