fix(mssql): save number bigger than 2147483647 as bigint (#11252)

lib/dialects/mssql/query.js

@@ -19,8 +19,12 @@ class Query extends AbstractQuery {
     paramType.type = TYPES.NVarChar;
     if (typeof value === 'number') {
       if (Number.isInteger(value)) {
+        if (value >= -2147483648 && value <= 2147483647) {
           paramType.type = TYPES.Int;
         } else {
+          paramType.type = TYPES.BigInt;
+        }
+      } else {
         paramType.type = TYPES.Numeric;
         //Default to a reasonable numeric precision/scale pending more sophisticated logic
         paramType.typeOptions = { precision: 30, scale: 15 };

test/integration/dialects/mssql/regressions.test.js

@@ -108,4 +108,28 @@ if (dialect.match(/^mssql/)) {
       });
     });
   });
+
+  it('saves value bigger than 2147483647, #11245', function() {
+    const BigIntTable =  this.sequelize.define('BigIntTable', {
+      business_id: {
+        type: Sequelize.BIGINT,
+        allowNull: false
+      }
+    }, {
+      freezeTableName: true
+    });
+
+    const bigIntValue = 2147483648;
+
+    return BigIntTable.sync({ force: true })
+      .then(() => {
+        return BigIntTable.create({
+          business_id: bigIntValue
+        });
+      })
+      .then(() => BigIntTable.findOne())
+      .then(record => {
+        expect(Number(record.business_id)).to.equals(bigIntValue);
+      });
+  });
 }