CROSS and OUTER APPLY when using hana provider

Hello ! Nested many to many associations end up generating this query but APPLY is not supported by HANA

     DECLARE @p_1  -- Int32
      SET     @p_1 = 50
      
      SELECT
        "key_data_result"."KUNNR",
        "key_data_result"."MANDT",
        "t2"."Id",
        "t2"."Name",
        "t2"."BUKRS",
        "t2"."MANDT",
        "t2"."Name_1"
      FROM
        (
                SELECT DISTINCT
                        "t1"."KUNNR",
                        "t1"."MANDT"
                FROM
                        (
                                SELECT
                                        "p"."KUNNR",
                                        "p"."MANDT"
                                FROM
                                        "SAPABAP1"."KNA1" "p"
                                WHERE
                                        "p"."MANDT" = '100' AND Lower("p"."SORTL") = 'webportal'
                                ORDER BY
                                        "p"."ERDAT" DESC
                                LIMIT :"p_1"
                        ) "t1"
        ) "key_data_result"
                CROSS APPLY (
                        SELECT
                                "detail"."WERKS" as "Id",
                                "detail"."NAME1" as "Name",
                                "c_1"."BUKRS",
                                "c_1"."MANDT",
                                "c_1"."BUTXT" as "Name_1"
                        FROM
                                "SAPABAP1"."T001W" "detail"
                                        LEFT JOIN "SAPABAP1"."T001K" "a_CompanyAgencyAssociation" ON "detail"."WERKS" = "a_CompanyAgencyAssociation"."BWKEY" AND "detail"."MANDT" = "a_CompanyAgencyAssociation"."MANDT"
                                        LEFT JOIN "SAPABAP1"."T001" "c_1" ON "c_1"."BUKRS" = "a_CompanyAgencyAssociation"."BUKRS" AND "c_1"."MANDT" = "a_CompanyAgencyAssociation"."MANDT"
                        WHERE
                                EXISTS(
                                        SELECT
                                                *
                                        FROM
                                                "SAPABAP1"."KNVV" "e"
                                        WHERE
                                                "key_data_result"."KUNNR" = "e"."KUNNR" AND
                                                "key_data_result"."MANDT" = "e"."MANDT" AND
                                                "e"."VKORG" = "detail"."WERKS" AND
                                                "e"."MANDT" = "detail"."MANDT"
                                )
                ) "t2"

        // class Customer
        [GraphQLIgnore]
        [Association(ThisKey = "Id, Mandt", OtherKey = "CustomerId, Mandt")]
        public CustomerAgencyAssociation[] CustomerAgencyAssociation { get; set; }

        [Association(QueryExpressionMethod = nameof(AgencyExpression), CanBeNull = true)]
        public Agency[] Agencies { get; set; }

        public static Expression<Func<Customer, IDataContext, IQueryable<Agency>>> AgencyExpression =>
        (c, db) => db.GetTable<Agency>().Where(a => c.CustomerAgencyAssociation.Any(e => e.AgencyId == a.Id && e.Mandt == a.Mandt));

        // class Agency

        [GraphQLIgnore]
        [Association(ThisKey = "Id, Mandt", OtherKey = "AgencyId, Mandt")]
        public CompanyAgencyAssociation CompanyAgencyAssociation { get; set; }

        [Association(QueryExpressionMethod = nameof(AgencyExpression), CanBeNull = true)]
        public Agency[] Agencies { get; set; }

        public static Expression<Func<Agency, IDataContext, IQueryable<Company>>> CompanyExpression =>
        (r, db) => db.GetTable<Company>().Where(c => c.Id == r.CompanyAgencyAssociation.CompanyId && c.Mandt == r.CompanyAgencyAssociation.Mandt);

            var test = _connection.Customers.LoadWith(e => e.Agencies).ThenLoad(e => e.Company).ToList();

[sdanyliv]

Looks like SAP HANA 2.0 supports LATERAL join. We can correct SQL generation for such database if you are using latest SAP HANA version.

[MaceWindu]

@lucas-garrido could you provide correct mappings for your query?