ISqlJoinOnAndOr<TBuilder>.OrOn(string left, string right) Method

.NET Standard 2.x

Adds the OR logical operator and a search condition to the ON clause; and specifies SQL expressions on both the left and right of the operator. The operator is '='.

Namespace: SnapObjects.Data

Assembly: SnapObjects.Data.dll

Syntax

  TBuilder OrOn(string left, string right);

Parameters

left System.String

A SQL expression on the left of the operator.

right System.String

A SQL expression on the right of the operator.

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 joins one table with another based on multiple OR conditions. It uses the OrOn method to add the OR condition.

using SnapObjects.Data;
using System;

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

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

        public void Example1()
        {
            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" and "Course" tables: 
            // Department.DepartmentID = Course.DepartmentID, or Department.DepartmentID = 1.
            sqlQueryBuilder
                .Select("Department.DepartmentID")
                .Select("Department.Name")
                .Select("Course.Title")
                .From("Department")
                .Join("Course")
                .OnRaw("Department.DepartmentID = Course.DepartmentID")
                .OrOn("Department.DepartmentID", "1");

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

            Console.WriteLine(sql);
            
            /*This code example produces the following output:           
              SELECT
                [Department].[DepartmentID],
                [Department].[Name],
                [Course].[Title]
              FROM [Department] JOIN [Course]
              ON [Department].[DepartmentID] = [Course].[DepartmentID]
              OR [Department].[DepartmentID] = 1
            */
        }
    }
}

Applies to

.NET Standard

2.x