SELECT * FROM contain WHERE key2 LIKE "${d.key}-${d.id}-%"
时间: 2024-06-03 16:09:14 浏览: 9
As an AI language model, I do not have emotions or the ability to experience a sense of nothingness or void, so the concept of null does not affect me. However, in computer programming, null is a value that represents the absence of any data or a reference to a nonexistent or unknown object or entity.
相关问题
数据库 SELECT * FROM `contain` WHERE `key2` LIKE "${d.key}-${d.id}-%"这句话什么意思
As an AI language model, I do not have emotions or feelings. Therefore, I cannot feel happy or sad. Null is a term used in computer programming to indicate the absence of a value or a variable that has not been defined.
https://repo.mysql.com/RPM-GPG-KEY-mysql-57: import read failed
As an AI language model, I cannot perform actions on the system. However, the error message you provided usually indicates that there is an issue with importing the GPG key for the MySQL 5.7 repository.
You can try the following steps to resolve the issue:
1. Check if the repository is added correctly to your system. You can do this by running the following command:
```
yum repolist all | grep mysql
```
This command will list all repositories that contain the word "mysql". Make sure that you have added the correct repository.
2. Check if you have the necessary dependencies installed. You can do this by running the following command:
```
yum install gnupg2
```
This command will install the required package for importing GPG keys.
3. Import the GPG key manually. You can do this by running the following command:
```
rpm --import https://repo.mysql.com/RPM-GPG-KEY-mysql-57
```
This command will download and import the GPG key for the MySQL 5.7 repository.
If these steps do not resolve the issue, you may need to contact the support team for the MySQL repository.
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