C# (CSharp) System.Data.Common.DbConnection.QueryFirstEmbedded Beispiele

Beispiel #1

Datei: TestDapper.cs Projekt: ststeiger/SchemaPorter

        public static void Test()
        {
            string table_schema = "dbo";
            // string table_name = "T_VWS_Ref_Darstellung";
            string table_name = "T_VWS_Ref_PdfLegendenKategorie";


            using (System.Data.Common.DbConnection connection = SqlFactory.GetConnection())
            {
                string select_query = connection.QueryFirstEmbedded <string>("SELECT_Columns.sql", typeof(TestDapper), new
                {
                    in_schema = table_schema,
                    in_table  = table_name,
                });



                TableDeclaration td = connection.QueryFirstEmbedded <TableDeclaration>("Upsert_Table.sql", typeof(TestDapper), new
                {
                    in_schema = table_schema,
                    in_table  = table_name,
                });


                if (td == null)
                {
                    return;
                }



                System.Collections.Generic.List <System.Collections.Generic.IDictionary <string, object> > data_to_insert =
                    connection.Query(select_query).Select(x => (System.Collections.Generic.IDictionary <string, object>)x).ToList();



                System.Console.WriteLine(data_to_insert);


                System.Collections.Generic.IEnumerable <TableColumnDefinition> lsColumns = connection.QueryEmbedded <TableColumnDefinition>("Upsert_Columns.sql", typeof(TestDapper), new
                {
                    in_schema = table_schema,
                    in_table  = table_name,
                });

                if (lsColumns == null || !System.Linq.Enumerable.Any(lsColumns))
                {
                    return;
                }



                string sql = @"
SET NOCOUNT ON;

" + td.table_declaration + @"

INSERT INTO  @" + td.variable_name + @" 
( 
";

                foreach (TableColumnDefinition cd in lsColumns)
                {
                    sql += "    ";

                    if (cd.ORDINAL_POSITION == 1)
                    {
                        sql += " ";
                    }
                    else
                    {
                        sql += ",";
                    }

                    sql += cd.QUOTED_COLUMN_NAME;
                    sql += System.Environment.NewLine;
                }



                sql += @") 
";



                for (int i = 0; i < data_to_insert.Count; ++i)
                {
                    if (i != 0)
                    {
                        sql += "UNION ALL ";
                    }

                    sql += "SELECT ";


                    foreach (TableColumnDefinition cd in lsColumns)
                    {
                        sql += "    ";


                        if (cd.ORDINAL_POSITION == 1)
                        {
                            sql += " ";
                        }
                        else
                        {
                            sql += ",";
                        }

                        object value = data_to_insert[i][cd.COLUMN_NAME];
                        sql += ObjectToInsertStringValue(value);

                        sql += System.Environment.NewLine;
                    }
                }


                sql += @"; 
-- SELECT * FROM @" + td.variable_name + @" 


MERGE INTO " + table_name + @" AS A 
USING @" + td.variable_name + @" AS CTE ON CTE." + lsColumns.AsList()[0].QUOTED_COLUMN_NAME + " = A." + lsColumns.AsList()[0].QUOTED_COLUMN_NAME + @" 
WHEN MATCHED 
	THEN UPDATE 
";

                foreach (TableColumnDefinition cd in lsColumns)
                {
                    if (cd.ORDINAL_POSITION == 1)
                    {
                        continue;
                    }

                    sql += "    ";

                    if (cd.ORDINAL_POSITION == 2)
                    {
                        sql += "SET  ";
                    }
                    else
                    {
                        sql += "	,";
                    }


                    sql += "A." + cd.QUOTED_COLUMN_NAME + " = CTE." + cd.QUOTED_COLUMN_NAME + " ";
                    sql += System.Environment.NewLine;
                }


                sql += @"

WHEN NOT MATCHED THEN 
INSERT 
( 
";
                foreach (TableColumnDefinition cd in lsColumns)
                {
                    sql += "    ";

                    if (cd.ORDINAL_POSITION == 1)
                    {
                        sql += " ";
                    }
                    else
                    {
                        sql += ",";
                    }

                    sql += cd.QUOTED_COLUMN_NAME;
                    sql += System.Environment.NewLine;
                }

                sql += @"
) 
VALUES 
( 
";
                foreach (TableColumnDefinition cd in lsColumns)
                {
                    sql += "    ";

                    if (cd.ORDINAL_POSITION == 1)
                    {
                        sql += " CTE.";
                    }
                    else
                    {
                        sql += ",CTE.";
                    }

                    sql += cd.QUOTED_COLUMN_NAME;
                    sql += System.Environment.NewLine;
                }

                sql += @"
); 


-- DELETE FROM " + table_name + @" WHERE xxx = '123'; 
-- SELECT * FROM " + table_name + @"; 


SET NOCOUNT OFF; 


";



                System.Console.WriteLine(sql);
            }
        }