select count(*) from Administrators where adname like concat('%', #{adname}, '%') 更换成sqlsever数据库的写法

在 SQL Server 中，可以使用 `LIKE` 运算符和 `+` 运算符来实现类似 `concat` 函数的功能。因此，可以把上面的语句改写为：

SELECT COUNT(*) FROM Administrators
WHERE adname LIKE '%' + @adname + '%';

其中，`@adname` 是一个参数，表示要查询的管理员名称。这里使用 `+` 运算符把 `'%'` 和参数值连接起来，构成一个模式，然后使用 `LIKE` 运算符进行匹配。这样就可以查询出符合条件的管理员记录数量了。

相关问题

sql sever 数据

SQL Server is a relational database management system (RDBMS) developed by Microsoft Corporation. It stores and manages data using Structured Query Language (SQL), which is a standard language for managing relational databases.

SQL Server supports various data types such as integers, floating-point numbers, strings, dates, and times. It can also store and manage large amounts of structured and unstructured data, including text, images, audio, and video.

SQL Server provides a range of features and services that enable developers and administrators to manage and optimize the performance of their databases. These include transaction processing, backup and restore, security, data analysis, reporting, and integration with other Microsoft technologies. SQL Server is widely used in enterprise environments and is available in different editions to suit different needs and budgets.

sqlsever2022client

SQL Server 2022 Client is software that allows applications to connect to SQL Server 2022 databases. It provides tools for managing SQL Server instances, creating and modifying databases, and executing queries. The client can be installed on a variety of operating systems, including Windows and Linux, and is available in both 32-bit and 64-bit versions. It is typically used by developers, database administrators, and other IT professionals who work with SQL Server databases.