diff --git a/packages/form/package.json b/packages/form/package.json
index 38600ae..e21340a 100644
--- a/packages/form/package.json
+++ b/packages/form/package.json
@@ -1,7 +1,7 @@
 {
   "name": "schemastery-vue",
   "description": "Type driven schema validator",
-  "version": "6.0.0",
+  "version": "6.1.0",
   "main": "src/index.ts",
   "repository": {
     "type": "git",
diff --git a/packages/form/src/extensions/table.vue b/packages/form/src/extensions/table.vue
index 7872fb4..d613272 100644
--- a/packages/form/src/extensions/table.vue
+++ b/packages/form/src/extensions/table.vue
@@ -17,7 +17,7 @@
           <th v-for="([key, schema]) in columns" :key="key">
             <span>{{ key === null ? t('entry.value') : tt(schema.meta.description) || key }}</span>
           </th>
-          <th :colspan="3"></th>
+          <th colspan="3"></th>
         </tr>
         <tr v-for="([key], index) in entries">
           <td
@@ -36,19 +36,18 @@
           <td
             v-for="([key, schema]) in columns"
             :key="key"
+            :class="'k-schema-column-' + schema.type"
             @mouseenter="handleMouseEnter"
             @mouseleave="handleMouseLeave">
-            <el-input
+            <schema-primitive
+              minimal
+              :schema="schema"
+              :disabled="disabled"
               :modelValue="key === null ? entries[index][1] : entries[index][1]?.[key]"
               @update:modelValue="key === null ? entries[index][1] = $event : (entries[index][1] ||= {})[key] = $event"
-              :disabled="disabled"
-              :type="schema.type === 'number' ? 'number' : 'text'"
-              :max="schema.meta.max"
-              :min="schema.meta.min"
-              :step="schema.meta.step"
               @focus="handleFocus"
               @blur="handleBlur"
-            ></el-input>
+            ></schema-primitive>
           </td>
           <td v-if="!disabled" class="button"
             :class="{ disabled: !index }"
@@ -98,6 +97,7 @@ import { useI18n } from 'vue-i18n'
 import { IconArrowUp, IconArrowDown, IconClose } from '../icons'
 import { Schema, useEntries, useI18nText } from '../utils'
 import SchemaBase from '../base.vue'
+import SchemaPrimitive from '../primitive.vue'
 import zhCN from '../locales/zh-CN.yml'
 import enUS from '../locales/en-US.yml'
 
@@ -111,14 +111,23 @@ const props = defineProps({
 
 defineEmits(['update:modelValue'])
 
+function isPrimitive(schema: Schema): boolean {
+  if (['string', 'number', 'boolean'].includes(schema.type)) return true
+  if (schema.type === 'union') return schema.list.every(item => item.type === 'const')
+}
+
+function ensureColumns(entries: [string, Schema][]) {
+  if (entries.every(([, schema]) => isPrimitive(schema))) return entries
+}
+
 const columns = computed<[string, Schema][]>(() => {
   const { inner } = props.schema
-  if (['string', 'number', 'boolean'].includes(inner.type)) {
+  if (isPrimitive(inner)) {
     return [[null, inner]]
   } else if (inner.type === 'tuple') {
-    return Object.entries(inner.list)
+    return ensureColumns(Object.entries(inner.list))
   } else if (inner.type === 'object') {
-    return Object.entries(inner.dict)
+    return ensureColumns(Object.entries(inner.dict))
   }
 })
 
@@ -188,7 +197,7 @@ if (import.meta.hot) {
   }
 
   th {
-    padding: 0.5rem 0;
+    padding: 0.5rem 0.75rem;
     line-height: 1rem;
   }
 
@@ -199,10 +208,13 @@ if (import.meta.hot) {
       background-color: var(--k-color-warning-fade);
     }
 
-    .el-input__wrapper {
-      z-index: 1;
+    * .el-input__wrapper {
       box-shadow: none;
     }
+
+    .el-select .el-input .el-input__wrapper {
+      box-shadow: none !important;
+    }
   }
 
   td {
@@ -217,10 +229,6 @@ if (import.meta.hot) {
     }
   }
 
-  td.key {
-    width: 30%;
-  }
-
   td.button {
     width: 2rem;
     color: var(--k-text-light);
@@ -242,6 +250,15 @@ if (import.meta.hot) {
       height: 1rem;
     }
   }
+
+  .k-schema-column-number {
+    min-width: 8rem;
+    width: 10rem;
+
+    .el-input-number {
+      width: 100%;
+    }
+  }
 }
 
 </style>
diff --git a/packages/form/src/primitive.vue b/packages/form/src/primitive.vue
index 055ce01..71010be 100644
--- a/packages/form/src/primitive.vue
+++ b/packages/form/src/primitive.vue
@@ -1,5 +1,8 @@
 <template>
-  <el-switch v-if="schema.type === 'boolean'" v-model="config" :class="{ nullable }" :disabled="disabled"></el-switch>
+  <template v-if="schema.type === 'boolean'">
+    <el-checkbox v-if="minimal" v-model="config" :class="{ nullable }" :disabled="disabled"></el-checkbox>
+    <el-switch v-else v-model="config" :class="{ nullable }" :disabled="disabled"></el-switch>
+  </template>
 
   <template v-else-if="schema.type === 'number'">
     <el-slider v-if="schema.meta.role === 'slider'" style="width: 200px"
@@ -7,15 +10,23 @@
     ></el-slider>
     <el-input-number v-else
       v-model="config" :disabled="disabled" :max="schema.meta.max" :min="schema.meta.min" :step="schema.meta.step"
+      @focus="$emit('focus', $event)" @blur="$emit('blur', $event)"
     ></el-input-number>
   </template>
 
-  <template v-else>
+  <template v-else-if="schema.type === 'string'">
     <el-color-picker v-if="schema.meta.role === 'color'" v-model="config" show-alpha></el-color-picker>
-    <el-time-picker v-else-if="schema.meta.role === 'time'" v-model="date"></el-time-picker>
-    <el-date-picker v-else-if="['date', 'datetime'].includes(schema.meta.role)" :type="schema.meta.role" v-model="date"></el-date-picker>
+    <el-time-picker
+      v-else-if="schema.meta.role === 'time'" v-model="date"
+      @focus="$emit('focus', $event)" @blur="$emit('blur', $event)"
+    ></el-time-picker>
+    <el-date-picker
+      v-else-if="['date', 'datetime'].includes(schema.meta.role)" :type="schema.meta.role" v-model="date"
+      @focus="$emit('focus', $event)" @blur="$emit('blur', $event)"
+    ></el-date-picker>
     <el-input v-else v-model="config" :disabled="disabled" :class="{ nullable }"
-      :style="{ width: isLink ? '16rem' : '12rem' }" :type="type">
+      :style="{ width: minimal ? '100%' : isLink ? '16rem' : '12rem' }" :type="type"
+      @focus="$emit('focus', $event)" @blur="$emit('blur', $event)">
       <template #prefix v-if="nullable"></template>
       <template #suffix v-if="isLink">
         <icon-external @click="onClickExternal(config)"></icon-external>
@@ -26,6 +37,22 @@
       </template>
     </el-input>
   </template>
+
+  <template v-else-if="schema.type === 'union'">
+    <el-select
+      v-model="selectModel"
+      filterable
+      :disabled="disabled"
+      @focus="$emit('focus', $event)" @blur="$emit('blur', $event)"
+    >
+      <el-option
+        v-for="(item, index) in schema.list"
+        :key="index"
+        :value="index"
+        :label="tt(item.meta.description) || item.value"
+      ></el-option>
+    </el-select>
+  </template>
 </template>
 
 <script lang="ts" setup>
@@ -33,21 +60,24 @@
 import { computed, PropType, ref } from 'vue'
 import { IconExternal, IconEye, IconEyeSlash } from './icons'
 import { isNullable } from 'cosmokit'
-import { useModel } from './utils'
+import { useI18nText, useModel } from './utils'
 import Schema from 'schemastery'
 
-const emit = defineEmits(['update:modelValue'])
+const emit = defineEmits(['update:modelValue', 'focus', 'blur'])
 
 const props = defineProps({
   schema: {} as PropType<Schema>,
   modelValue: {},
   disabled: Boolean,
+  minimal: Boolean,
 })
 
 const showPass = ref(false)
 
 const config = useModel()
 
+const tt = useI18nText()
+
 const nullable = computed(() => isNullable(config.value))
 
 const isLink = computed(() => ['url', 'link'].includes(props.schema.meta.role))
@@ -77,6 +107,17 @@ const date = computed({
   },
 })
 
+const selectModel = computed({
+  get() {
+    const item = props.schema.list.find(item => item.value === config.value)
+    if (!item) return
+    return tt(item.meta.description) || item.value
+  },
+  set(index) {
+    config.value = props.schema.list[index].value
+  },
+})
+
 function onClickExternal(value: string) {
   if (!value) return
   open(value, '_blank')