ISqlJoinOnAndOr<TBuilder>.OrOnValue(string left, object value) Method

.NET Standard 2.x

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

Namespace: SnapObjects.Data

Assembly: SnapObjects.Data.dll

Syntax

  TBuilder OrOnValue(string left, object value);

Parameters

left System.String

An expression on the left of the operator.

value System.Object

A specific value 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 conditions. It uses the OrOnValue method to add the OR condition.

using SnapObjects.Data;
using System;

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

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

        public void Example1()
        {
            var sqlQueryBuilder = new SqlQueryBuilder();
            
            // Gets the 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, and Department.DepartmentID = 1 or Department.DepartmentID  = 2.            
            sqlQueryBuilder
                .Select("Department.DepartmentID")
                .Select("Department.Name")
                .Select("Course.Title")
                .From("Department")
                .Join("Course")
                .OnRaw("Department.DepartmentID = Course.DepartmentID")
                .AndOnRaw("Department.DepartmentID = 1")
                .OrOnValue("Department.DepartmentID ", 2);

            // 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]
              AND [Department].[DepartmentID] = 1
              OR [Department].[DepartmentID] = 2
            */
        }
    }
}

Applies to

.NET Standard

2.x