ISqlHavingAndOr<TBuilder>.OrHavingValue(string left, object value) Method

.NET Standard 2.x

Adds the OR logical operator and a search condition to the HAVING clause. Specifies the SQL expression on the left 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

The 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 HAVING clause.

Examples

The following code example demonstrates how to use the OrHavingValue method to add an OR condition to the HAVING clause.

using SnapObjects.Data;
using System;

namespace Appeon.ApiDoc.ISqlHavingAndOrExamples
{
    public class OrHavingValueExample
    {
        private readonly SchoolContext _context;

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

        public void Example1()
        {
            var sqlQueryBuilder = new SqlQueryBuilder();

            // Groups "StudentGrade" table by StudentID and CourseID, and gets the sum of Grade of each group.
            // Specifies the HAVING condition for group as "StudentID = 6" or StudentID = 8.
            sqlQueryBuilder
                .Select("StudentID")
                .Select("sum(Grade)")
                .From("StudentGrade")
                .GroupBy("StudentID, CourseID")
                .HavingRaw("StudentID = 6")
                .OrHavingValue("StudentID", 8);

            // 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
                [StudentID],
                sum(Grade)
              FROM [StudentGrade]
              GROUP BY
                [StudentID],
                [CourseID]
                HAVING ([StudentID] = 6
                OR [StudentID] = 8)
           */
        }
    }
}

Applies to

.NET Standard

2.x