//private QueryColumnBase override_TryResolveSelectedColumn(BatchOutputColumnTypeResolver batchResolver, string outputColumnName, string sourceColumnName) //{ // if (resolved_source_metadata == null) // { // resolved_source_metadata = batchResolver.TryGetTableVariable(VarTableRef.Variable.Name); // if (resolved_source_metadata == null) // { // throw new NotImplementedException(VarTableRef.WhatIsThis()); // } // } // return base.AddResolveOutputdColumn(new QueryColumnE(this, outputColumnName, sourceColumnName, columnDbType.Value)); //} internal override bool TryResolveSourceColumnType(BatchOutputColumnTypeResolver batchResolver, string sourceColumnName, out SourceColumnType columnType) { if (resolved_source_metadata == null) { resolved_source_metadata = batchResolver.TryGetTableVariable(VarTableRef.Variable.Name); if (resolved_source_metadata == null) { throw new NotImplementedException(VarTableRef.WhatIsThis()); } } ColumnTypeMetadata columnDbType = resolved_source_metadata.TryGetColumnTypeByName(sourceColumnName); if (columnDbType != null) { columnType = new SourceColumnType(this, sourceColumnName, columnDbType.ColumnDbType, columnDbType.AllowNull); return(true); } columnType = null;// DbType.Object; return(false); }