diff --git a/README.md b/README.md
index 6602dec13..a663f84f0 100644
--- a/README.md
+++ b/README.md
@@ -11,3 +11,23 @@
 
 idea运行需要把内存修改大一点
 ![](asset/img.png)
+
+# 兼容达梦（连接mycat代理的达梦）
+## 创建函数：
+CREATE OR REPLACE FUNCTION TO_DAYS(in_date DATE)
+RETURN NUMBER
+AS
+BEGIN
+RETURN TRUNC(in_date) - DATE '1970-01-01';
+END;
+
+## 修改server.xml配置
+system标签下添加：
+<property name="sqlTranslate">true</property>
+<property name="sqlTranslateType">dm</property>
+
+<!-- 关键配置：移除反引号 -->
+<property name="removeGraveAccent">1</property>
+
+## 修改dm.ini配置
+COMPATIBLE_MODE改成mysql的数字
diff --git a/src/main/java/com/zhgd/mybatis/DataScopeInterceptor.java b/src/main/java/com/zhgd/mybatis/DataScopeInterceptor.java
index bfe13d211..99c1c5d09 100644
--- a/src/main/java/com/zhgd/mybatis/DataScopeInterceptor.java
+++ b/src/main/java/com/zhgd/mybatis/DataScopeInterceptor.java
@@ -14,18 +14,13 @@ import com.zhgd.annotation.DataScope;
 import com.zhgd.jeecg.common.util.SpringContextUtils;
 import com.zhgd.xmgl.constant.Cts;
 import com.zhgd.xmgl.entity.dto.OperLogDataChange;
-import com.zhgd.xmgl.entity.dto.OperLogInsertChange;
 import com.zhgd.xmgl.security.util.SecurityUtils;
-import com.zhgd.xmgl.util.EnvironmentUtil;
-import com.zhgd.xmgl.util.LogMdcUtil;
-import com.zhgd.xmgl.util.PrintColorUtil;
-import com.zhgd.xmgl.util.ThreadLocalUtil;
+import com.zhgd.xmgl.util.*;
 import lombok.Setter;
 import lombok.extern.slf4j.Slf4j;
 import net.sf.jsqlparser.schema.Table;
 import net.sf.jsqlparser.statement.insert.Insert;
 import net.sf.jsqlparser.statement.select.*;
-import org.apache.commons.lang3.StringUtils;
 import org.apache.ibatis.executor.Executor;
 import org.apache.ibatis.executor.statement.StatementHandler;
 import org.apache.ibatis.mapping.BoundSql;
@@ -41,7 +36,6 @@ import org.springframework.web.context.request.RequestContextHolder;
 import org.springframework.web.context.request.ServletRequestAttributes;
 
 import javax.servlet.http.HttpServletRequest;
-import java.lang.reflect.Array;
 import java.lang.reflect.Method;
 import java.sql.Connection;
 import java.sql.SQLException;
@@ -196,14 +190,17 @@ public class DataScopeInterceptor extends JsqlParserSupport implements InnerInte
             Method[] declaredMethods = clazz.getDeclaredMethods();
             Optional<DataScope> dsOption = Arrays.stream(declaredMethods).filter(method -> method.getName().equals(methodName)).map(method -> method.getAnnotation(DataScope.class)).filter(Objects::nonNull).findFirst();
             annotation = dsOption.orElseGet(() -> clazz.getAnnotation(DataScope.class));
-            if (findIgnoreDataScope(parameter, annotation) && isNotSqlTest()) {
-                return;
-            }
+//            if (findIgnoreDataScope(parameter, annotation) && isNotSqlTest()) {
+//                return;
+//            }
             PluginUtils.MPBoundSql mpBs = PluginUtils.mpBoundSql(boundSql);
             JSONObject jo = new JSONObject();
             jo.put("ds", annotation);
             jo.put("parameter", parameter);
-            mpBs.sql(this.parserSingle(mpBs.sql(), jo));
+            log.debug("原来sql：{}",mpBs.sql());
+            //过滤器转换成达梦函数
+            String convertedSql = DamengUtil.convertMySQLFormatToDm(mpBs.sql());
+            mpBs.sql(this.parserSingle(convertedSql, jo));
         } catch (Exception e) {
             log.error(e.getMessage(), e);
         }
diff --git a/src/main/java/com/zhgd/xmgl/modules/bigdevice/mapper/xml/LifterAlarmMapper.xml b/src/main/java/com/zhgd/xmgl/modules/bigdevice/mapper/xml/LifterAlarmMapper.xml
index fc8289710..08f109b05 100644
--- a/src/main/java/com/zhgd/xmgl/modules/bigdevice/mapper/xml/LifterAlarmMapper.xml
+++ b/src/main/java/com/zhgd/xmgl/modules/bigdevice/mapper/xml/LifterAlarmMapper.xml
@@ -337,6 +337,6 @@
         from lifter_alarm la
         where la.add_time >= #{queryStartTime}
         and la.add_time  <![CDATA[<=]]>
-        DATE_FORMAT(#{queryEndTime},'%Y-%m-%d 23:59:59')
+        CONCAT(DATE_FORMAT(#{queryEndTime},'%Y-%m-%d'), ' 23:59:59')
     </select>
 </mapper>
diff --git a/src/main/java/com/zhgd/xmgl/modules/environment/mapper/xml/DustNoiseDataMapper.xml b/src/main/java/com/zhgd/xmgl/modules/environment/mapper/xml/DustNoiseDataMapper.xml
index 839d3b2d3..5665456bd 100644
--- a/src/main/java/com/zhgd/xmgl/modules/environment/mapper/xml/DustNoiseDataMapper.xml
+++ b/src/main/java/com/zhgd/xmgl/modules/environment/mapper/xml/DustNoiseDataMapper.xml
@@ -16,7 +16,7 @@
         from dust_noise_data
         where
 		<![CDATA[
-            upload_date < date_format(now(), '%Y-%m-%d 00:00:00')
+            upload_date < CONCAT(date_format(now(), '%Y-%m-%d'), ' 00:00:00')
         ]]>
     </delete>
     <insert id="insertDustNoiseHistoryData">
@@ -46,7 +46,7 @@
         from dust_noise_data
         where
 		<![CDATA[
-            upload_date < date_format(now(), '%Y-%m-%d 00:00:00')
+            upload_date < CONCAT(date_format(now(), '%Y-%m-%d'), ' 00:00:00')
         ]]>
     </insert>
     <select id="selectDustNoiseData" resultType="com.zhgd.xmgl.modules.environment.entity.DustNoiseData"
@@ -149,7 +149,7 @@
         <if test="deviceId != null and deviceId != ''">
             and device_id = #{deviceId}
         </if>
-        and upload_date >= DATE_FORMAT(CURRENT_DATE,'%Y-%m-%d 00:00:00')
+        and upload_date >= CONCAT(DATE_FORMAT(CURRENT_DATE,'%Y-%m-%d'), ' 00:00:00')
         group by time
     </select>
 </mapper>
diff --git a/src/main/java/com/zhgd/xmgl/modules/mechanicalequipmentposition/mapper/xml/MechanicalEquipmentPositionDevMapper.xml b/src/main/java/com/zhgd/xmgl/modules/mechanicalequipmentposition/mapper/xml/MechanicalEquipmentPositionDevMapper.xml
index ac6171ae0..44da63b9e 100644
--- a/src/main/java/com/zhgd/xmgl/modules/mechanicalequipmentposition/mapper/xml/MechanicalEquipmentPositionDevMapper.xml
+++ b/src/main/java/com/zhgd/xmgl/modules/mechanicalequipmentposition/mapper/xml/MechanicalEquipmentPositionDevMapper.xml
@@ -6,7 +6,7 @@
         select mepd.*,wi.worker_name driver_name,IFNULL(((case
         when round((UNIX_TIMESTAMP(now()) - UNIX_TIMESTAMP(heartbeat_time)) / 60) &lt;= 60
         then 1
-        else 0 end)),0) online
+        else 0 end)),0) as online
         from mechanical_equipment_position_dev mepd
         left join worker_info wi on mepd.project_sn = wi.project_sn and wi.id=mepd.driver_id
         ${ew.customSqlSegment}
diff --git a/src/main/java/com/zhgd/xmgl/modules/vehicleposition/mapper/xml/VehiclePositionDevMapper.xml b/src/main/java/com/zhgd/xmgl/modules/vehicleposition/mapper/xml/VehiclePositionDevMapper.xml
index d10b437e8..fc7ca85f4 100644
--- a/src/main/java/com/zhgd/xmgl/modules/vehicleposition/mapper/xml/VehiclePositionDevMapper.xml
+++ b/src/main/java/com/zhgd/xmgl/modules/vehicleposition/mapper/xml/VehiclePositionDevMapper.xml
@@ -7,6 +7,7 @@
                 CONCAT(IFNULL(vpd.car_type, ''), IFNULL(ct.car_type_name, '')) carType,
                CONCAT(IFNULL(vpd.driver, ''), IFNULL(wi.worker_name, '')) driver,
                CONCAT(IFNULL(vpd.driver_telephone, ''), IFNULL(ci.driver_telephone, '')) driverTelephone
+        ,vpd.project_sn
         from vehicle_position_dev vpd
         LEFT JOIN car_info ci ON ci.id = vpd.car_id
         LEFT JOIN enterprise_info en ON en.id = ci.enterprise_id
diff --git a/src/main/java/com/zhgd/xmgl/modules/vehicleposition/service/impl/VehiclePositionDevServiceImpl.java b/src/main/java/com/zhgd/xmgl/modules/vehicleposition/service/impl/VehiclePositionDevServiceImpl.java
index 45ab9a745..58e5f37b8 100644
--- a/src/main/java/com/zhgd/xmgl/modules/vehicleposition/service/impl/VehiclePositionDevServiceImpl.java
+++ b/src/main/java/com/zhgd/xmgl/modules/vehicleposition/service/impl/VehiclePositionDevServiceImpl.java
@@ -111,8 +111,8 @@ public class VehiclePositionDevServiceImpl extends ServiceImpl<VehiclePositionDe
     }
 
     private QueryWrapper<VehiclePositionDev> getQueryWrapper(HashMap<String, Object> paramMap) {
-        String alias = "vpd.";
-        QueryWrapper<VehiclePositionDev> queryWrapper = QueryGenerator.initPageQueryWrapper(VehiclePositionDev.class, paramMap, alias);
+        String alias = "";
+        QueryWrapper<VehiclePositionDev> queryWrapper = QueryGenerator.initPageQueryWrapper(VehiclePositionDev.class, paramMap, false);
         queryWrapper.orderByDesc(alias + RefUtil.fieldNameUlc(VehiclePositionDev::getId));
         Integer online = MapUtils.getInteger(paramMap, "online");
         if (online != null) {
diff --git a/src/main/java/com/zhgd/xmgl/modules/video/mapper/xml/AiAnalyseHardWareAlarmRecordMapper.xml b/src/main/java/com/zhgd/xmgl/modules/video/mapper/xml/AiAnalyseHardWareAlarmRecordMapper.xml
index 9d871e701..a1a5d49dc 100644
--- a/src/main/java/com/zhgd/xmgl/modules/video/mapper/xml/AiAnalyseHardWareAlarmRecordMapper.xml
+++ b/src/main/java/com/zhgd/xmgl/modules/video/mapper/xml/AiAnalyseHardWareAlarmRecordMapper.xml
@@ -146,7 +146,7 @@
             and a.create_time >= CONCAT(DATE_FORMAT(DATE_ADD(NOW(), INTERVAL -6 DAY), '%Y-%m-%d'), ' 00:00:00')
         </if>
         <if test="selectType == '3'.toString()">
-            and a.create_time >= DATE_FORMAT(NOW(), '%Y-%m-%d 00:00:00')
+            and a.create_time >= CONCAT(DATE_FORMAT(NOW(), '%Y-%m-%d'), ' 00:00:00')
         </if>
         <if test="selectType == '4'.toString()">
             and a.create_time >= DATE_ADD(NOW(), INTERVAL -1 DAY)
@@ -173,7 +173,7 @@
         00:00:00'),1,0)),0) as past30AlarmNum,
         ifnull(sum(if(a.create_time >= CONCAT(DATE_FORMAT(DATE_ADD(NOW(), INTERVAL -6 DAY), '%Y-%m-%d'), '
         00:00:00'),1,0)),0) as past7AlarmNum,
-        ifnull(sum(if(a.create_time >= DATE_FORMAT(NOW(), '%Y-%m-%d 00:00:00'),1,0)),0) as todayAlarmNum
+        ifnull(sum(if(a.create_time >= CONCAT(DATE_FORMAT(NOW(), '%Y-%m-%d'), ' 00:00:00'),1,0)),0) as todayAlarmNum
         FROM ai_analyse_hard_ware_alarm_record a
         where 1=1
         and a.project_sn = #{projectSn}
diff --git a/src/main/java/com/zhgd/xmgl/modules/worker/mapper/xml/WorkerAttendanceMapper.xml b/src/main/java/com/zhgd/xmgl/modules/worker/mapper/xml/WorkerAttendanceMapper.xml
index 69e96de31..5c894fdd3 100644
--- a/src/main/java/com/zhgd/xmgl/modules/worker/mapper/xml/WorkerAttendanceMapper.xml
+++ b/src/main/java/com/zhgd/xmgl/modules/worker/mapper/xml/WorkerAttendanceMapper.xml
@@ -1,6 +1,26 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 <mapper namespace="com.zhgd.xmgl.modules.worker.mapper.WorkerAttendanceMapper">
+    <sql id="workerAttendanceSqlWithoutImageUrl">
+        a.id
+             ,a.person_sn
+             ,a.pass_type
+             ,a.create_time
+             ,a.project_sn
+             ,a.dev_sn
+             ,a.card_type
+             ,a.attendance_type
+             ,a.passageway_name
+             ,a.attendance_status
+             ,a.temperature
+             ,a.is_statistics
+             ,a.car_number
+             ,a.health_code
+             ,a.nucleic_acid_time
+             ,a.nucleic_acid_result
+             ,a.vaccinate_time
+             ,a.vaccinate_state
+    </sql>
     <select id="viewDayAttendanceList" resultType="com.zhgd.jeecg.common.mybatis.EntityMap">
         SELECT a.attendance_status,
         a.attendance_type,
@@ -33,9 +53,10 @@
         ORDER BY create_time DESC
     </select>
     <select id="selectWorkerAttendancePage" resultType="com.zhgd.jeecg.common.mybatis.EntityMap">
-        SELECT a.*,
+        SELECT
         IF(a.image_url IS NOT NULL, a.image_url, b.id_card_big_photo_url) image_url,
-        code_state,
+        <include refid="workerAttendanceSqlWithoutImageUrl"></include>
+        ,code_state,
         b.worker_name,
         b.id_card,
         c.team_name,
@@ -155,9 +176,10 @@
     </select>
 
     <select id="selectWorkerAttendanceNewestList" resultType="com.zhgd.jeecg.common.mybatis.EntityMap">
-        SELECT a.*,
+        SELECT
         IF(a.image_url IS NOT NULL, a.image_url, b.id_card_big_photo_url) image_url,
-        b.worker_name,
+        <include refid="workerAttendanceSqlWithoutImageUrl"></include>
+        ,b.worker_name,
         b.id_card,
         c.team_name,
         d.department_name,
@@ -311,9 +333,10 @@
 
     <select id="selectWorkerAttendanceListByDev" resultType="com.zhgd.jeecg.common.mybatis.EntityMap"
             parameterType="map">
-        SELECT a.*,
+        SELECT
         IF(a.image_url IS NOT NULL, a.image_url, b.id_card_big_photo_url) image_url,
-        b.worker_name,
+        <include refid="workerAttendanceSqlWithoutImageUrl"></include>
+        ,b.worker_name,
         b.id_card,
         c.team_name,
         d.department_name,
@@ -499,9 +522,10 @@
         ORDER BY d.enterprise_id
     </select>
     <select id="selectWorkNewAttendanceList" resultType="com.zhgd.jeecg.common.mybatis.EntityMap">
-        SELECT a.*,
+        SELECT
         IF(a.image_url IS NOT NULL, a.image_url, b.id_card_big_photo_url) image_url,
-        b.worker_name,
+        <include refid="workerAttendanceSqlWithoutImageUrl"></include>
+        ,b.worker_name,
         b.id_card,
         c.team_name,
         d.department_name,
diff --git a/src/main/java/com/zhgd/xmgl/modules/worker/service/impl/WorkerInfoServiceImpl.java b/src/main/java/com/zhgd/xmgl/modules/worker/service/impl/WorkerInfoServiceImpl.java
index cba1221e4..f5fb6448d 100644
--- a/src/main/java/com/zhgd/xmgl/modules/worker/service/impl/WorkerInfoServiceImpl.java
+++ b/src/main/java/com/zhgd/xmgl/modules/worker/service/impl/WorkerInfoServiceImpl.java
@@ -777,7 +777,7 @@ public class WorkerInfoServiceImpl extends ServiceImpl<WorkerInfoMapper, WorkerI
     private void setYesterday(Map<String, Object> map, PersonTypeAndEduStatisticsVo.AttendancePerson attendancePerson) {
         map.put(Cts.QUERY_DATE, Cts.YESTERDAY);
         Map<String, Object> ap = workerInfoMapper.selectAttendanceWorkerPersonTypeTotal(map);
-        attendancePerson.setTotalPersonRhbRatio(NumberUtils.rate(Double.valueOf(attendancePerson.getTotalPerson()), MapUtils.getDouble(ap, "totalPerson"), 2));
+        attendancePerson.setTotalPersonRhbRatio(NumberUtils.rate(Convert.toDouble(attendancePerson.getTotalPerson()), MapUtils.getDouble(ap, "totalPerson"), 2));
     }
 
     @Override
diff --git a/src/main/java/com/zhgd/xmgl/util/DamengUtil.java b/src/main/java/com/zhgd/xmgl/util/DamengUtil.java
new file mode 100644
index 000000000..712bb78dd
--- /dev/null
+++ b/src/main/java/com/zhgd/xmgl/util/DamengUtil.java
@@ -0,0 +1,264 @@
+package com.zhgd.xmgl.util;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * 达梦工具类
+ */
+public class DamengUtil {
+    /**
+     * 将MySQL的格式转换为达梦的格式
+     *
+     * @param sql
+     * @return
+     */
+    public static String convertMySQLFormatToDm(String sql) {
+        sql = convertMySqlDateToDm(sql);
+        sql = convertDatediffToDaysBetween(sql);
+        sql = removeBackticks(sql);
+        sql = convertGroupConcatToWmConcat(sql);
+        sql = convertDoubleQuotesToSingle(sql);
+        sql = convertYearToDatePart(sql);
+        return sql;
+    }
+
+    /**
+     * 将MySQL的YEAR函数转换为SQL Server的DATEPART函数
+     *
+     * @param sql 原始SQL语句
+     * @return 转换后的SQL语句
+     */
+    public static String convertYearToDatePart(String sql) {
+        // 匹配YEAR函数的正则表达式
+        // 匹配形式：YEAR(date_column) 或 YEAR(date_expression)
+        Pattern pattern = Pattern.compile(
+                "YEAR\\s*\\(\\s*([^\\)]+)\\s*\\)",
+                Pattern.CASE_INSENSITIVE
+        );
+
+        Matcher matcher = pattern.matcher(sql);
+        StringBuffer sb = new StringBuffer();
+
+        while (matcher.find()) {
+            String dateExpr = matcher.group(1).trim();  // 获取日期表达式
+
+            // 构建DATEPART函数
+            String datePart = String.format(
+                    "DATEPART(YEAR, %s)",
+                    dateExpr
+            );
+
+            matcher.appendReplacement(sb, datePart);
+        }
+        matcher.appendTail(sb);
+
+        return sb.toString();
+    }
+
+    /**
+     * 将SQL中的双引号转换为单引号
+     * 特别处理DATE_FORMAT函数中的格式化字符串
+     *
+     * @param sql 原始SQL语句
+     * @return 转换后的SQL语句
+     */
+    public static String convertDoubleQuotesToSingle(String sql) {
+        // 然后处理其他普通双引号
+        sql = sql.replace("\"", "'");
+
+        return sql;
+    }
+
+    /**
+     * 将MySQL的DATE_ADD/DATE_SUB函数转换为达梦兼容的DATEADD格式
+     *
+     * @param sql 原始SQL语句
+     * @return 转换后的SQL语句
+     */
+    public static String convertMySqlDateToDm(String sql) {
+        // 匹配 DATE_ADD/DATE_SUB 函数的正则表达式（不区分大小写）
+        Pattern pattern = Pattern.compile(
+                "DATE_(ADD|SUB)\\s*\\(\\s*([^,]+)\\s*,\\s*INTERVAL\\s*(-?\\d+)\\s*(YEAR|MONTH|DAY|HOUR|MINUTE|SECOND)\\s*\\)",
+                Pattern.CASE_INSENSITIVE
+        );
+
+        Matcher matcher = pattern.matcher(sql);
+        StringBuffer sb = new StringBuffer();
+
+        while (matcher.find()) {
+            String function = matcher.group(1); // ADD or SUB
+            String dateExpr = matcher.group(2).trim();  // NOW() or other date expression
+            String num = matcher.group(3);       // number
+            String unit = matcher.group(4).toUpperCase();      // time unit
+
+            // 处理SUB情况，将数字取反
+            if ("SUB".equalsIgnoreCase(function)) {
+                num = "-" + num;
+            }
+
+            // 转换为达梦的DATEADD函数
+            String dmFunction = String.format("DATEADD(%s, %s, %s)",
+                    unit,   // 时间单位
+                    num,    // 数量
+                    dateExpr // 日期表达式
+            );
+
+            matcher.appendReplacement(sb, dmFunction);
+        }
+        matcher.appendTail(sb);
+
+        return sb.toString();
+    }
+
+    /**
+     * 将MySQL的GROUP_CONCAT函数转换为达梦兼容的WM_CONCAT格式
+     * 兼容处理DISTINCT和非DISTINCT两种情况
+     *
+     * @param sql 原始SQL语句
+     * @return 转换后的SQL语句
+     */
+    public static String convertGroupConcatToWmConcat(String sql) {
+        // 匹配GROUP_CONCAT函数的正则表达式
+        // 匹配以下形式：
+        // GROUP_CONCAT(DISTINCT column)
+        // GROUP_CONCAT(column)
+        // GROUP_CONCAT(column SEPARATOR ';')
+        // GROUP_CONCAT(DISTINCT column SEPARATOR ';')
+        Pattern pattern = Pattern.compile(
+                "GROUP_CONCAT\\s*\\(\\s*(DISTINCT\\s+)?([^\\)]+?)(?:\\s+SEPARATOR\\s+('[^']*'|\\S+))?\\s*\\)",
+                Pattern.CASE_INSENSITIVE
+        );
+
+        Matcher matcher = pattern.matcher(sql);
+        StringBuffer sb = new StringBuffer();
+
+        while (matcher.find()) {
+            String distinctPart = matcher.group(1);  // 可能为"DISTINCT "或null
+            String columns = matcher.group(2).trim(); // 要连接的列表达式
+            String separator = matcher.group(3);     // SEPARATOR部分，可能为null
+
+            // 构建达梦的WM_CONCAT函数
+            StringBuilder dmFunction = new StringBuilder("WM_CONCAT(");
+
+            // 如果原始有DISTINCT，需要特殊处理，因为WM_CONCAT不支持DISTINCT
+            if (distinctPart != null && !distinctPart.trim().isEmpty()) {
+                // 方案1：在外层使用DISTINCT
+                // dmFunction.append("DISTINCT ").append(columns);
+
+                // 方案2：使用子查询去重（更可靠）
+                dmFunction.append("(SELECT WM_CONCAT(DISTINCT_VAL) FROM (SELECT DISTINCT ")
+                        .append(columns).append(" AS DISTINCT_VAL))");
+            } else {
+                // 没有DISTINCT的直接转换
+                dmFunction.append(columns);
+            }
+
+            dmFunction.append(")");
+
+            // 处理SEPARATOR（达梦默认用逗号分隔）
+            if (separator != null && !separator.trim().isEmpty()) {
+                // 去掉引号（如果SEPARATOR值有引号）
+                String sepValue = separator.replaceAll("^'|'$", "");
+                // 使用REPLACE函数替换默认逗号
+                dmFunction.insert(0, "REPLACE(");
+                dmFunction.append(", ',', ").append("'").append(sepValue).append("'").append(")");
+            }
+
+            matcher.appendReplacement(sb, dmFunction.toString());
+        }
+        matcher.appendTail(sb);
+
+        return sb.toString();
+    }
+
+    /**
+     * 去除SQL中的反引号(`)
+     *
+     * @param sql 原始SQL语句
+     * @return 去除反引号后的SQL语句
+     */
+    public static String removeBackticks(String sql) {
+        // 匹配被反引号包围的标识符
+        Pattern pattern = Pattern.compile("`([^`]+)`");
+        Matcher matcher = pattern.matcher(sql);
+        StringBuffer sb = new StringBuffer();
+
+        while (matcher.find()) {
+            // 获取反引号中的内容
+            String identifier = matcher.group(1);
+            // 替换为不带反引号的内容
+            matcher.appendReplacement(sb, identifier);
+        }
+        matcher.appendTail(sb);
+
+        return sb.toString();
+    }
+
+    /**
+     * 将SQL中的DATEDIFF函数转换为DAYS_BETWEEN函数
+     *
+     * @param sql 原始SQL
+     * @return 转换后的SQL
+     */
+    public static String convertDatediffToDaysBetween(String sql) {
+        // 匹配DATEDIFF函数的正则表达式
+        Pattern pattern = Pattern.compile(
+                "DATEDIFF\\s*\\(\\s*([^,]+)\\s*,\\s*([^)]+)\\s*\\)",
+                Pattern.CASE_INSENSITIVE
+        );
+        Matcher matcher = pattern.matcher(sql);
+        StringBuffer sb = new StringBuffer();
+
+        while (matcher.find()) {
+            // 获取两个日期参数
+            String date1 = matcher.group(1).trim();
+            String date2 = matcher.group(2).trim();
+
+            // 转换TO_CHAR为达梦兼容格式（如果需要）
+            date1 = convertToCharToDm(date1);
+            date2 = convertToCharToDm(date2);
+
+            // 替换为DAYS_BETWEEN函数
+            matcher.appendReplacement(sb, "DAYS_BETWEEN(" + date1 + ", " + date2 + ")");
+        }
+        matcher.appendTail(sb);
+
+        return sb.toString();
+    }
+
+    /**
+     * 转换TO_CHAR函数为达梦兼容格式
+     */
+    private static String convertToCharToDm(String expr) {
+        if (expr.contains("TO_CHAR") || expr.contains("to_char")) {
+            return expr.replace("NOW()", "SYSDATE")
+                    .replace("now()", "SYSDATE");
+        }
+        return expr;
+    }
+
+    /**
+     * 转换MySQL日期格式到达梦格式
+     *
+     * @param mysqlFormat MySQL格式字符串
+     * @return 达梦格式字符串
+     */
+    private static String convertDateFormatPattern(String mysqlFormat) {
+        // 替换格式符号
+        String dmFormat = mysqlFormat
+                .replace("%Y", "YYYY")
+                .replace("%y", "YY")
+                .replace("%m", "MM")
+                .replace("%c", "MM") // %c在MySQL中是月份(1-12)
+                .replace("%d", "DD")
+                .replace("%e", "DD") // %e在MySQL中是月份中的天数(1-31)
+                .replace("%H", "HH24")
+                .replace("%h", "HH12")
+                .replace("%i", "MI")
+                .replace("%s", "SS")
+                .replace("%p", "AM");
+
+        return dmFormat;
+    }
+}