diff --git a/src/components/CodeEditor.vue b/src/components/CodeEditor.vue
index c6e3de0..8e3a7ae 100644
--- a/src/components/CodeEditor.vue
+++ b/src/components/CodeEditor.vue
@@ -65,7 +65,6 @@ const langExtension = computed(() => {
 })
 
 const enhanceAutoCompletion = computed(() => {
-  console.log(props.language)
   return autocompletion({
     override: [enhanceCompletion(props.language), completeAnyWord],
   })
diff --git a/src/composables/sqlTable.ts b/src/composables/sqlTable.ts
index 15534cc..aba882d 100644
--- a/src/composables/sqlTable.ts
+++ b/src/composables/sqlTable.ts
@@ -11,5 +11,6 @@ export function buildSqlScript(studentSql: string) {
   const table =
     sqlTables.find((item) => item.id === selectedTableId.value) ??
     sqlTables[0]
-  return `${table.setupSql}\n\n${studentSql}\n\nSELECT * FROM ${table.tableName};`
+  const normalizedSql = studentSql.trim().replace(/;?\s*$/, ";")
+  return `${table.setupSql}\n\n${normalizedSql}\n\nSELECT * FROM ${table.tableName};`
 }
diff --git a/src/data/sqlTables.ts b/src/data/sqlTables.ts
index f47e290..8c657d1 100644
--- a/src/data/sqlTables.ts
+++ b/src/data/sqlTables.ts
@@ -1,7 +1,6 @@
 export interface SqlTablePreset {
   id: string
   label: string
-  description: string
   tableName: string
   setupSql: string
 }
@@ -63,21 +62,18 @@ export const sqlTables: SqlTablePreset[] = [
   {
     id: "students",
     label: "学生成绩表",
-    description: "适合练习按分数筛选、批量更新、删除不及格记录",
     tableName: "students",
     setupSql: studentsSetupSql,
   },
   {
     id: "employees",
     label: "员工工资表",
-    description: "适合练习按部门分组调薪、按入职日期筛选",
     tableName: "employees",
     setupSql: employeesSetupSql,
   },
   {
     id: "products",
     label: "商品库存表",
-    description: "适合练习新增商品、调整库存、下架缺货商品",
     tableName: "products",
     setupSql: productsSetupSql,
   },
diff --git a/src/desktop/SqlSection.vue b/src/desktop/SqlSection.vue
index 77593ff..2d66fa3 100644
--- a/src/desktop/SqlSection.vue
+++ b/src/desktop/SqlSection.vue
@@ -1,6 +1,7 @@
 <script lang="ts" setup>
-import { computed } from "vue"
+import { computed, watch } from "vue"
 import CodeEditor from "../components/CodeEditor.vue"
+import { output } from "../composables/code"
 import { selectedTableId } from "../composables/sqlTable"
 import { sqlTables } from "../data/sqlTables"
 import OutputSection from "./OutputSection.vue"
@@ -10,6 +11,10 @@ const selectedTable = computed(
     sqlTables.find((table) => table.id === selectedTableId.value) ??
     sqlTables[0],
 )
+
+watch(selectedTableId, () => {
+  output.value = ""
+})
 </script>
 
 <template>