更正

mybatis-plus-core/src/main/java/com/baomidou/mybatisplus/core/metadata/TableFieldInfo.java

@@ -307,7 +307,8 @@ public class TableFieldInfo {
         prefix = StringUtils.isEmpty(prefix) ? StringPool.EMPTY : prefix;
         // 默认:  AND column=#{prefix + el}
         String sqlScript = " AND " + String.format(condition, column, prefix + el);
-        return convertIf(sqlScript, prefix + property);
+        // 查询的时候只判非空
+        return SqlScriptUtils.convertIf(sqlScript, String.format("%s != null", prefix + property));
     }
 
     /**

mybatis-plus/src/test/java/com/baomidou/mybatisplus/test/h2/H2UserMapperTest.java

@@ -1,22 +1,5 @@
 package com.baomidou.mybatisplus.test.h2;
 
-import static java.util.stream.Collectors.toList;
-
-import java.io.IOException;
-import java.sql.SQLException;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
-import javax.annotation.Resource;
-
-import org.junit.Assert;
-import org.junit.BeforeClass;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.springframework.test.context.ContextConfiguration;
-import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
-
 import com.baomidou.mybatisplus.core.conditions.Wrapper;
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
@@ -27,6 +10,21 @@ import com.baomidou.mybatisplus.test.base.entity.TestData;
 import com.baomidou.mybatisplus.test.h2.config.H2Db;
 import com.baomidou.mybatisplus.test.h2.entity.mapper.H2UserMapper;
 import com.baomidou.mybatisplus.test.h2.entity.persistent.H2User;
+import org.junit.Assert;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+import javax.annotation.Resource;
+import java.io.IOException;
+import java.sql.SQLException;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import static java.util.stream.Collectors.toList;
 
 /**
  * <p>
@@ -53,6 +51,7 @@ public class H2UserMapperTest extends BaseTest {
         H2User h2User = new H2User();
         h2User.setName(NQQ);
         h2User.setAge(1);
+        h2User.setDeleted(0);
         h2User.setDesc("这是一个不错的小伙子");
         Assert.assertTrue(1 == userMapper.insert(h2User));