ISqlWhereAndOr<TBuilder>.AndWhere(string left, string right) Method

.NET Standard 2.x

Adds the AND logical operator and a search condition to the WHERE 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 AndWhere(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 WHERE clause.

Examples

The following code example demonstrates how to use the AndWhere method to add an AND condition to the WHERE clause. In this example, the AND condition associates two tables using the default operator "=".

using SnapObjects.Data;
using System;

namespace Appeon.ApiDoc.ISqlWhereAndOrExamples
{
    public class AndWhereExample
    {
        private readonly SchoolContext _context;

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

        public void Example3()
        {

            // Declares SqlQueryBuilder.
            var sqlbuilder = new SqlQueryBuilder();

            // Defines a SQL statement and adds an AND condition to WHERE clause for associating the two tables:
            // a.DepartmentID equal to b.DepartmentID
            sqlbuilder.Select(new string[] { "CourseID", "Title" })
                .From("Course", "a")
                .From("Department", "b")
                .Where("CourseID", SqlBinaryOperator.GreaterThan,
                      SqlBuilder.Parameter<int>("courid"))
                .AndWhere("a.DepartmentID", "b.DepartmentID");

            string sql = sqlbuilder.ToSqlString(_context);

            Console.WriteLine(sql);

            /*This code produces the following output:

            SELECT
            [CourseID],
            [Title]
            FROM [Course] AS [a] ,
            [Department] AS [b]
            WHERE ([CourseID] > @courid
            AND [a].[DepartmentID] = [b].[DepartmentID])
           */

        }
    }
}

Applies to

.NET Standard

2.x