f"Tried to create a {com_name} object, but the operation has failed. "
时间: 2024-05-25 14:10:00 浏览: 15
This error message indicates that an attempt was made to create an object of type `{com_name}`, but the creation process failed for some reason. Without more information about the specific error that occurred, it's difficult to determine the root cause of the issue. Some possible reasons for this error could include problems with the input data or configuration settings, missing dependencies, or issues with the software or hardware environment. It may be helpful to review any error messages or logs that were generated during the attempted creation process to get more information about what went wrong.
相关问题
优化一下CREATE TRIGGER update_invoice_complex AFTER UPDATE ON t_sfi_inter_invoice FOR EACH ROW BEGIN INSERT INTO t_sfi_inter_bus_complex (OPER_TIME, OPERATION_TYPE, OLD_OBJECT,NEW_OBJECT) VALUES (NOW(), 'update',JSON_OBJECT(OLD.ID,OLD.INVOICE_NO,OLD.SUM,OLD.FACT_SUM,OLD.STATUS,OLD.BUSINESS_ID,OLD.REINVOICE,OLD.IS_PRINTED,OLD.PRINT_USER_ID,OLD.PRINT_USER_NAME,OLD.PRINT_DATE,OLD.INVOICE_TYPE,OLD.INVOICE_STATUS,OLD.TOMB_CERTIFICATE),JSON_OBJECT(NEW.ID,NEW.INVOICE_NO,NEW.SUM,NEW.FACT_SUM,NEW.STATUS,NEW.BUSINESS_ID,NEW.REINVOICE,NEW.IS_PRINTED,NEW.PRINT_USER_ID,NEW.PRINT_USER_NAME,NEW.PRINT_DATE,NEW.INVOICE_TYPE,NEW.INVOICE_STATUS,NEW.TOMB_CERTIFICATE)); END;
可以针对该触发器做如下优化:
1. 由于该触发器在每次更新t_sfi_inter_invoice表的一行数据时都会被触发,因此为了提高效率,可以将该触发器改为AFTER UPDATE ON t_sfi_inter_invoice FOR EACH STATEMENT,这样该触发器只会在更新语句执行完毕后被触发一次,而不是每更新一行数据就被触发一次。
2. 可以将JSON_OBJECT函数的调用次数减少为一次,即先将OLD和NEW两个对象分别转换为JSON格式的字符串,再将这两个字符串作为参数调用一次JSON_OBJECT函数,这样可以减少函数的调用次数,提高效率。
优化后的触发器代码如下所示:
CREATE TRIGGER update_invoice_complex AFTER UPDATE ON t_sfi_inter_invoice FOR EACH STATEMENT
BEGIN
DECLARE oldStr, newStr VARCHAR(10000);
SET oldStr = JSON_OBJECT('ID',OLD.ID,'INVOICE_NO',OLD.INVOICE_NO,'SUM',OLD.SUM,'FACT_SUM',OLD.FACT_SUM,'STATUS',OLD.STATUS,'BUSINESS_ID',OLD.BUSINESS_ID,'REINVOICE',OLD.REINVOICE,'IS_PRINTED',OLD.IS_PRINTED,'PRINT_USER_ID',OLD.PRINT_USER_ID,'PRINT_USER_NAME',OLD.PRINT_USER_NAME,'PRINT_DATE',OLD.PRINT_DATE,'INVOICE_TYPE',OLD.INVOICE_TYPE,'INVOICE_STATUS',OLD.INVOICE_STATUS,'TOMB_CERTIFICATE',OLD.TOMB_CERTIFICATE);
SET newStr = JSON_OBJECT('ID',NEW.ID,'INVOICE_NO',NEW.INVOICE_NO,'SUM',NEW.SUM,'FACT_SUM',NEW.FACT_SUM,'STATUS',NEW.STATUS,'BUSINESS_ID',NEW.BUSINESS_ID,'REINVOICE',NEW.REINVOICE,'IS_PRINTED',NEW.IS_PRINTED,'PRINT_USER_ID',NEW.PRINT_USER_ID,'PRINT_USER_NAME',NEW.PRINT_USER_NAME,'PRINT_DATE',NEW.PRINT_DATE,'INVOICE_TYPE',NEW.INVOICE_TYPE,'INVOICE_STATUS',NEW.INVOICE_STATUS,'TOMB_CERTIFICATE',NEW.TOMB_CERTIFICATE);
INSERT INTO t_sfi_inter_bus_complex (OPER_TIME, OPERATION_TYPE, OLD_OBJECT, NEW_OBJECT) VALUES (NOW(), 'update', oldStr, newStr);
END;
CREATE TRIGGER update_invoice_complex AFTER UPDATE ON t_sfi_inter_invoice FOR EACH ROW BEGIN INSERT INTO t_sfi_inter_bus_complex (OPER_TIME, OPERATION_TYPE, OLD_OBJECT,NEW_OBJECT) VALUES (NOW(), 'update',JSON_OBJECT(OLD.ID,OLD_OINVOICE_NO,OLD.SUM,OLD.FACT_SUM,OLD.STATUS,OLD.BUSINESS_ID,OLD.REINVOICE,OLD.IS_PRINTED,OLD.PRINT_USER_ID,OLD.PRINT_USER_NAME,OLD.PRINT_DATE,OLD.INVOICE_TYPE,OLD.INVOICE_STATUS,OLD.TOMB_CERTIFICATE),JSON_OBJECT(NEW.ID,OINVOICE_NO,NEW.SUM,NEW.FACT_SUM,NEW.STATUS,NEW.BUSINESS_ID,NEW.REINVOICE,NEW.IS_PRINTED,NEW.PRINT_USER_ID,NEW.PRINT_USER_NAME,NEW.PRINT_DATE,NEW.INVOICE_TYPE,NEW.INVOICE_STATUS,NEW.TOMB_CERTIFICATE)); END;优化一下
可以尝试将触发器中的JSON_OBJECT函数拆分成单独的变量,以提高可读性和易维护性。同时,将INSERT语句中的字段名改为明确的列名,而不是使用通配符。建议修改后的触发器代码如下:
```
CREATE TRIGGER update_invoice_complex
AFTER UPDATE ON t_sfi_inter_invoice
FOR EACH ROW
BEGIN
DECLARE old_invoice_json JSON;
DECLARE new_invoice_json JSON;
SET old_invoice_json = JSON_OBJECT('id', OLD.ID,
'oinvoice_no', OLD.OINVOICE_NO,
'sum', OLD.SUM,
'fact_sum', OLD.FACT_SUM,
'status', OLD.STATUS,
'business_id', OLD.BUSINESS_ID,
'reinvoice', OLD.REINVOICE,
'is_printed', OLD.IS_PRINTED,
'print_user_id', OLD.PRINT_USER_ID,
'print_user_name', OLD.PRINT_USER_NAME,
'print_date', OLD.PRINT_DATE,
'invoice_type', OLD.INVOICE_TYPE,
'invoice_status', OLD.INVOICE_STATUS,
'tomb_certificate', OLD.TOMB_CERTIFICATE);
SET new_invoice_json = JSON_OBJECT('id', NEW.ID,
'oinvoice_no', NEW.OINVOICE_NO,
'sum', NEW.SUM,
'fact_sum', NEW.FACT_SUM,
'status', NEW.STATUS,
'business_id', NEW.BUSINESS_ID,
'reinvoice', NEW.REINVOICE,
'is_printed', NEW.IS_PRINTED,
'print_user_id', NEW.PRINT_USER_ID,
'print_user_name', NEW.PRINT_USER_NAME,
'print_date', NEW.PRINT_DATE,
'invoice_type', NEW.INVOICE_TYPE,
'invoice_status', NEW.INVOICE_STATUS,
'tomb_certificate', NEW.TOMB_CERTIFICATE);
INSERT INTO t_sfi_inter_bus_complex (OPER_TIME, OPERATION_TYPE, OLD_OBJECT, NEW_OBJECT)
VALUES (NOW(), 'update', old_invoice_json, new_invoice_json);
END;
```