diff --git a/backend/templates/sql_examples/SQLite.yaml b/backend/templates/sql_examples/SQLite.yaml
deleted file mode 100644
index bfcaacc9..00000000
--- a/backend/templates/sql_examples/SQLite.yaml
+++ /dev/null
@@ -1,81 +0,0 @@
-template:
-  quot_rule: |
-    <rule>
-      必须对数据库名、表名、字段名、别名外层加双引号（"）。
-      <note>
-        1. 点号（.）不能包含在引号内，必须写成 "table"
-        2. 即使标识符不含特殊字符或非关键字，也需强制加双引号
-      </note>
-    </rule>
-
-  limit_rule: |
-    <rule>
-      当需要限制行数时，必须使用标准的LIMIT语法
-    </rule>
-
-  other_rule: |
-    <rule>必须为每个表生成别名（不加AS）</rule>
-    {multi_table_condition}
-    <rule>禁止使用星号(*)，必须明确字段名</rule>
-    <rule>中文/特殊字符字段需保留原名并添加英文别名</rule>
-    <rule>函数字段必须加别名</rule>
-    <rule>百分比字段保留两位小数并以%结尾</rule>
-    <rule>避免与数据库关键字冲突</rule>
-
-  basic_example: |
-    <basic-examples>
-      <intro>
-        📌 以下示例严格遵循<Rules>中的 SQLite 规范，展示符合要求的 SQL 写法与典型错误案例。
-        ⚠️ 注意：示例中的表名、字段名均为演示虚构，实际使用时需替换为用户提供的真实标识符。
-        🔍 重点观察：
-          1. 双引号包裹所有数据库对象的规范用法
-          2. 中英别名/百分比/函数等特殊字段的处理
-          3. 关键字冲突的规避方式
-      </intro>
-      <example>
-        <input>查询 ORDERS 表的前100条订单（含中文字段和百分比）</input>
-        <output-bad>
-          SELECT * FROM ORDERS LIMIT 100  -- 错误：未加引号、使用星号
-          SELECT "订单ID", "金额" FROM "ORDERS" "t1" LIMIT 100  -- 错误：缺少英文别名
-          SELECT COUNT("订单ID") FROM "ORDERS" "t1"  -- 错误：函数未加别名
-        </output-bad>
-        <output-good>
-          SELECT
-            "t1"."订单ID" AS "order_id",
-            "t1"."金额" AS "amount",
-            COUNT("t1"."订单ID") AS "total_orders",
-            ROUND("t1"."折扣率" * 100, 2) || '%' AS "discount_percent"
-          FROM "ORDERS" "t1"
-          LIMIT 100
-        </output-good>
-      </example>
-
-      <example>
-        <input>统计用户表 USERS（含关键字字段user）的活跃占比</input>
-        <output-bad>
-          SELECT user, status FROM USERS  -- 错误：未处理关键字和引号
-          SELECT "user", ROUND(active_ratio) FROM "USERS"  -- 错误：百分比格式错误
-        </output-bad>
-        <output-good>
-          SELECT
-            "u"."user" AS "username",
-            ROUND("u"."active_ratio" * 100, 2) || '%' AS "active_percent"
-          FROM "USERS" "u"
-          WHERE "u"."status" = 1
-        </output-good>
-      </example>
-    </basic-examples>
-
-  example_engine: SQLite 3.x
-  example_answer_1: |
-    {"success":true,"sql":"SELECT \"country_name\", \"continent_name\", \"year\", \"gdp\" FROM \"sample_country_gdp\" ORDER BY \"country_name\", \"year\"","tables":["sample_country_gdp"],"chart-type":"line"}
-  example_answer_1_with_limit: |
-    {"success":true,"sql":"SELECT \"country_name\", \"continent_name\", \"year\", \"gdp\" FROM \"sample_country_gdp\" ORDER BY \"country_name\", \"year\" LIMIT 1000","tables":["sample_country_gdp"],"chart-type":"line"}
-  example_answer_2: |
-    {"success":true,"sql":"SELECT \"country_name\", \"gdp\" FROM \"sample_country_gdp\" WHERE \"year\" = '2024' ORDER BY \"gdp\" DESC","tables":["sample_country_gdp"],"chart-type":"pie"}
-  example_answer_2_with_limit: |
-    {"success":true,"sql":"SELECT \"country_name\", \"gdp\" FROM \"sample_country_gdp\" WHERE \"year\" = '2024' ORDER BY \"gdp\" DESC LIMIT 1000","tables":["sample_country_gdp"],"chart-type":"pie"}
-  example_answer_3: |
-    {"success":true,"sql":"SELECT \"country_name\", \"gdp\" FROM \"sample_country_gdp\" WHERE \"year\" = '2025' AND \"country_name\" = '中国'","tables":["sample_country_gdp"],"chart-type":"table"}
-  example_answer_3_with_limit: |
-    {"success":true,"sql":"SELECT \"country_name\", \"gdp\" FROM \"sample_country_gdp\" WHERE \"year\" = '2025' AND \"country_name\" = '中国' LIMIT 1000","tables":["sample_country_gdp"],"chart-type":"table"}