ISqlJoinOnAndOr<TBuilder>.AndOn(string left, ISqlParameter parameter) Method

.NET Standard 2.x

Adds the AND logical operator and a search condition to the ON clause; and specifies a SQL expression on the left of the operator and a SQL parameter on the right of the operator. The operator is '='.

Namespace: SnapObjects.Data

Assembly: SnapObjects.Data.dll

Syntax

  TBuilder AndOn(string left, ISqlParameter parameter);

Parameters

left System.String

A SQL expression on the left of the operator.

parameter SnapObjects.Data.ISqlParameter

An ISqlParameter object which represents a SQL parameter on the right of the operator.

It can be created by calling the SqlBuilder.Parameter method.

Returns

TBuilder

Returns the TBuilder object which can be used to add more search conditions to the current ON clause.

Examples

The following code example demonstrates how to join one table with another on multiple conditions. It uses the AndOn method to add more conditions.

using SnapObjects.Data;
using System;

namespace Appeon.ApiDoc.ISqlJoinOnAndOrExamples
{
    public class AndOnExample
    {
        private readonly SchoolContext _context;

        public AndOnExample(SchoolContext dataContext)
        {
            // Sets data context.
            _context = dataContext;
        }

        public void Example3()
        {
            var sqlQueryBuilder = new SqlQueryBuilder();

            // Gets DepartmentID values and Name values from the "Department" table, and Title values from the "Course" table.
            // Sets the condition to join the "Department" table and the "Course" table: 
            // Department.DepartmentID = Course.DepartmentID, and Department.DepartmentID equal to the input argument.                    
            sqlQueryBuilder
                .Select("Department.DepartmentID")
                .Select("Department.Name")
                .Select("Course.Title")
                .From("Department")
                .Join("Course")
                .OnRaw("Department.DepartmentID = Course.DepartmentID")
                .AndOn("Department.DepartmentID",
                    SqlBuilder.Parameter<int>("departmentid"));

            // Converts to raw SQL for the database corresponding to the data context.
            string sql = sqlQueryBuilder.ToSqlString(_context);

            Console.WriteLine(sql);

            // Executest the SQL statement, and specifies the value for the input argument.
            var departments = _context.SqlExecutor.Select<DynamicModel>(sql, 1);

            /*This code example produces the following output:           
              SELECT
                [Department].[DepartmentID],
                [Department].[Name],
                [Course].[Title]
              FROM [Department] JOIN [Course]
              ON [Department].[DepartmentID] = [Course].[DepartmentID]
              AND [Department].[DepartmentID] = @departmentid
            */
        }
    }
}

Applies to

.NET Standard

2.x