ISqlHavingAndOr<TBuilder>.AndHaving(ISqlHavingCondition condition, string alias) Method

.NET Standard 2.x

Adds the AND logical operator and a search condition (specified by an ISqlHavingCondition object) to the HAVING clause. You can specify an alias for the search condition.

Namespace: SnapObjects.Data

Assembly: SnapObjects.Data.dll

Syntax

TBuilder AndHaving(ISqlHavingCondition condition, string alias);

Parameters

condition SnapObjects.Data.ISqlHavingCondition

An ISqlHavingCondition object which represents a search condition in the HAVING clause.

This object can be created by using the SqlBuilder.Having method and so on.

alias System.String

An alias for the search condition.

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 AndHaving method to add an AND condition to the HAVING clause.

using SnapObjects.Data;
using System;

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

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

        public void Example8()
        {
            ISqlQueryBuilder sqlQueryBuilder = new SqlQueryBuilder();

            // Defines a HAVING condition.
            ISqlHavingCondition having =
                SqlBuilder.HavingRaw("StudentID < 10");

            // Groups "StudentGrade" table by StudentID and CourseID, and gets the sum of Grade of each group.
            // Specifies the HAVING condition for group as "StudentID > 0" and adds the condition defined above ("StudentID < 10").
            // Gives the AndHaving condition a name so it can be modified or removed easily.
            sqlQueryBuilder
                .Select("StudentID")
                .Select("sum(Grade)")
                .From("StudentGrade")
                .GroupBy("StudentID, CourseID")
                .HavingRaw("StudentID > 0")
                .AndHaving(having, "having");

            // 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] > 0
                AND ([StudentID] < 10))
           */
        }
    }
}

Applies to

.NET Standard

2.x