一套是放在 ros::param namespace下，另一套是在 ros::NodeHandle 下，这两套API的操作完全一样，用...
问对组和数据使用FromSqlRaw或Linq查询EN"SELECT Year(Datum) AS y, Month(Datum) AS m, SUM(Bedra...
The above stored procedure has2 input parameterswhich have to be provided when using theFromSqlRaw()method. Therefore we have to useSqlParameterarray to sets these parameters. The SqlParameter class resides insideMicrosoft.Data.SqlClientnamespace. ...
Crée une requête LINQ basée sur une requête SQL brute. C# Copier public static System.Linq.IQueryable<TEntity> FromSqlRaw<TEntity> (this Microsoft.EntityFrameworkCore.DbSet<TEntity> source, string sql, params object?[] parameters) where TEntity : class; Paramètres de type TEnti...
Returns the SQL from the file without the parameters replaced.
public static System.Linq.IQueryable<TEntity> FromSqlRaw<TEntity>(this Microsoft.EntityFrameworkCore.DbSet<TEntity> source, string sql, params object?[] parameters) where TEntity : class; 类型参数 TEntity source 的元素类型。 参数 source DbSet<TEntity> 用作IQueryable<T> 原始SQL 查询基础...
parameters Object[] Valeurs à affecter aux paramètres. Retours IQueryable<TEntity> IQueryable<T>représentant la requête SQL brute. Remarques Si le fournisseur de base de données prend en charge la composition sur le SQL fourni, vous pouvez composer sur la requête SQL brute à l’aid...
CREATE PROCEDURE insert_user(OUT u_id INTEGER,IN u_name VARCHAR(20),IN u_sex VARCHAR(20),IN...
CREATE PROCEDURE insert_user(OUT u_id INTEGER,IN u_name VARCHAR(20),IN u_sex VARCHAR(20),IN...
pass a concatenated or interpolated string ($"") with non-validated user-provided values into this method. Doing so may expose your application to SQL injection attacks. To use the interpolated string syntax, consider usingFromSql<TEntity>(DbSet<TEntity>, FormattableString)to create paramete...