diff --git a/src/graphql.js b/src/graphql.js
index 43cc36ab..60f16227 100644
--- a/src/graphql.js
+++ b/src/graphql.js
@@ -7,7 +7,7 @@ import dotprop from "dot-prop-immutable";
 
 const lorem = new LoremIpsum();
 
-const primitiveTypes = ["ID", "String", "Float", "Integer", "Boolean", "Date", "Time", "DateTime", "JSON", "SmallInteger", "BigInteger", "Decimal", "Char", "Varchar", "DateTimeWithZone"]
+const primitiveTypes = ["ID", "String", "Float", "Integer", "Boolean", "Date", "Time", "DateTime", "JSON"]
 const getDefType = (type, isArray, required) => {
   isArray = isArray ? true : type.kind === "ListType";
   required = required ? true : type.kind === "NonNullType";
@@ -183,18 +183,6 @@ const generateRandomValue = (type) => {
         return "2017-11-13T03:15:45.108Z"
       case "JSON":
         return { foo: "bar" }
-      case "SmallInteger":
-        return 12
-      case "BigInteger":
-        return 4323
-      case "Decimal":
-        return 23.84
-      case "Char":
-        return "F919mV2W1ifQy9wlNyYnoOoqUM1"
-      case "Varchar":
-        return "7mr8VjGnCCerZUyzC9YDCn8Oxku"
-      case "DateTimeWithZone":
-        return "2021-11-22T03:15:45.108"
       default:
         return type
     }
@@ -218,18 +206,6 @@ const generateRandomValue = (type) => {
         return new Date().toISOString()
       case "JSON":
         return { foo: "bar" }
-      case "SmallInteger":
-        return Math.ceil(Math.random() * 100)
-      case "BigInteger":
-        return Math.ceil(Math.random() * 10000)
-      case "Decimal":
-        return Number((Math.random() * 100).toFixed(2))
-      case "Char":
-        return generateId(6)
-      case "Varchar":
-        return generateId(6)
-      case "DateTimeWithZone":
-        return new Date().toISOString()
       default:
         return type
     }
diff --git a/src/graphql.test.js b/src/graphql.test.js
index 4dd0f4e8..849be911 100644
--- a/src/graphql.test.js
+++ b/src/graphql.test.js
@@ -25,12 +25,6 @@ describe("generateSchemaAST method", () => {
       f19: String @link(table: mytype4, from: id, to: somefield, field: goodfield)
       f20: mytype5 @link(table: mytype5, from: id, to: nicefield)
       f21: [mytype6]! @link(table: mytype6, from: id, to: goodfield)
-      f22: SmallInteger
-      f23: BigInteger
-      f24: Decimal
-      f25: Char
-      f26: Varchar
-      f27: DateTimeWithZone
     }
     `
     const expectedSchemaAST = {
@@ -330,84 +324,6 @@ describe("generateSchemaAST method", () => {
           hasCreatedAtDirective: false,
           hasUpdatedAtDirective: false,
           hasNestedFields: true
-        },
-        {
-          name: "f22",
-          type: "SmallInteger",
-          isRequired: false,
-          isPrimary: false,
-          hasUniqueConstraint: false,
-          hasForeignConstraint: false,
-          isLink: false,
-          isArray: false,
-          hasCreatedAtDirective: false,
-          hasUpdatedAtDirective: false,
-          hasNestedFields: false
-        },
-        {
-          name: "f23",
-          type: "BigInteger",
-          isRequired: false,
-          isPrimary: false,
-          hasUniqueConstraint: false,
-          hasForeignConstraint: false,
-          isLink: false,
-          isArray: false,
-          hasCreatedAtDirective: false,
-          hasUpdatedAtDirective: false,
-          hasNestedFields: false
-        },
-        {
-          name: "f24",
-          type: "Decimal",
-          isRequired: false,
-          isPrimary: false,
-          hasUniqueConstraint: false,
-          hasForeignConstraint: false,
-          isLink: false,
-          isArray: false,
-          hasCreatedAtDirective: false,
-          hasUpdatedAtDirective: false,
-          hasNestedFields: false
-        },
-        {
-          name: "f25",
-          type: "Char",
-          isRequired: false,
-          isPrimary: false,
-          hasUniqueConstraint: false,
-          hasForeignConstraint: false,
-          isLink: false,
-          isArray: false,
-          hasCreatedAtDirective: false,
-          hasUpdatedAtDirective: false,
-          hasNestedFields: false
-        },
-        {
-          name: "f26",
-          type: "Varchar",
-          isRequired: false,
-          isPrimary: false,
-          hasUniqueConstraint: false,
-          hasForeignConstraint: false,
-          isLink: false,
-          isArray: false,
-          hasCreatedAtDirective: false,
-          hasUpdatedAtDirective: false,
-          hasNestedFields: false
-        },
-        {
-          name: "f27",
-          type: "DateTimeWithZone",
-          isRequired: false,
-          isPrimary: false,
-          hasUniqueConstraint: false,
-          hasForeignConstraint: false,
-          isLink: false,
-          isArray: false,
-          hasCreatedAtDirective: false,
-          hasUpdatedAtDirective: false,
-          hasNestedFields: false
         }
       ]
     }
@@ -549,30 +465,6 @@ describe("generateRandomFieldValues method", () => {
       {
         name: "k9",
         type: "JSON"
-      },
-      {
-        name: "k10",
-        type: "SmallInteger"
-      },
-      {
-        name: "k11",
-        type: "BigInteger"
-      },
-      {
-        name: "k12",
-        type: "Decimal"
-      },
-      {
-        name: "k13",
-        type: "Char"
-      },
-      {
-        name: "k14",
-        type: "Varchar"
-      },
-      {
-        name: "k15",
-        type: "DateTimeWithZone"
       }
     ]
     const result = {
@@ -586,13 +478,7 @@ describe("generateRandomFieldValues method", () => {
       k8: "2017-11-13T03:15:45.108Z",
       k9: {
         foo: "bar"
-      },
-      k10: 12,
-      k11: 4323,
-      k12: 23.84,
-      k13: "F919mV2W1ifQy9wlNyYnoOoqUM1",
-      k14: "7mr8VjGnCCerZUyzC9YDCn8Oxku",
-      k15: "2021-11-22T03:15:45.108"
+      }
     }
     expect(generateRandomFieldValues(fields)).toEqual(result)
   })