LeftOuterJoin.cs

using System.Threading.Tasks;
using Waher.Script.Model;
using Waher.Script.Persistence.SQL.Sources;
 
namespace Waher.Script.Persistence.SQL.SourceDefinitions
{
    public class LeftOuterJoin : Join
    {
        public LeftOuterJoin(SourceDefinition Left, SourceDefinition Right, ScriptNode Conditions, int Start, int Length, Expression Expression)
            : base(Left, Right, Conditions, Start, Length, Expression)
        {
        }
 
        public override async Task<IDataSource> GetSource(Variables Variables)
        {
            return new LeftOuterJoinedSource(
                await this.Left.GetSource(Variables), 
                await this.Right.GetSource(Variables), this.Conditions);
        }
 
    }
}