修复修改表单bug

src/main/java/com/xjrsoft/module/form/service/impl/FormExecuteServiceImpl.java

@@ -1009,10 +1009,15 @@ public class FormExecuteServiceImpl implements IFormExecuteService {
 
                     if (childTableConfig.isPresent()) {
                         //删除子表单数据
-                        Entity childDeleteWhere = Entity.create(tableMap.getKey()).set(childTableConfig.get().getRelationField(), keyValue2);
-                        result = SqlRunnerAdapter.db().dynamicDelete(tableMap.getKey(), childDeleteWhere);
-                        if (!result) {
-                            throw new MyException("删除数据失败");
+                        // 查询是否有子表数据，如果有就删除，没有返回
+                        long count = SqlRunnerAdapter.db().selectCount("select * from " + tableMap.getKey() + " where " + childTableConfig.get().getRelationField() + " = " + keyValue2);
+
+                        if (count > 0) {
+                            Entity childDeleteWhere = Entity.create(tableMap.getKey()).set(childTableConfig.get().getRelationField(), keyValue2);
+                            result = SqlRunnerAdapter.db().dynamicDelete(tableMap.getKey(), childDeleteWhere);
+                            if (!result) {
+                                throw new MyException("删除数据失败");
+                            }
                         }
 
                         //再重新新增