Node.js 使用';添加多个输入以查询MS SQL Server实例;节点mssql';npm包
我想查询MS SQL Server实例以提供一个非常简单的Node.js 使用';添加多个输入以查询MS SQL Server实例;节点mssql';npm包,node.js,sql-server,express,tedious,node-mssql,Node.js,Sql Server,Express,Tedious,Node Mssql,我想查询MS SQL Server实例以提供一个非常简单的POST请求。我正在使用nodejs+express。以下代码(异步版本)仅考虑第一个输入类型,因此返回错误- let pool = await sql.connect(dbCredentials); let bookName = "string to be matched" ; let ranksVal= 10 let result = await pool .request()
POST
请求。我正在使用nodejs+express。以下代码(异步版本)仅考虑第一个输入类型,因此返回错误-
let pool = await sql.connect(dbCredentials);
let bookName = "string to be matched" ;
let ranksVal= 10
let result = await pool
.request()
.input("item", sql.VarChar, bookName)
.input("ranksVal", sql.Int , ranksVal)
.query(`select top @ranksVal * from dbTable where book = @item order by counts desc`);
理想情况下,上述代码应该为以下SQL查询返回一个结果:
select top 10 * from dbTable where book = "string to be matched" order by counts desc
或者,以下解决方案也可以工作:
let result = await pool
.request()
.input("item", sql.VarChar, bookName)
.query(`select top ${ranksVal} * from dbTable where book = @item order by counts desc`);
但我想了解如何将多个值传递给req.input()
方法。
谢谢。要在TOP values子句中使用表达式或参数,必须使用括号。乙二醇
.query(`select top (@ranksVal) * from dbTable where book = @item order by counts desc`);