public static ColumnRow Load(AdomdDataReader dataReader)
{
// Traverse the response and
// read column 1, "TABLE_SCHEMA"
// read column 2, "TABLE_NAME"
// read column 2, "COLUMN_NAME"
// Get the column value
string perspectiveName = dataReader.GetString(1);
string tableName = dataReader.GetString(2);
string columnName = dataReader.GetString(3);
if (tableName.StartsWith("$") && columnName != "RowNumber")
{
// Get the column value
var row = new ColumnRow();
row.Name = columnName;
return(row);
}
else
{
return(null);
}
}
public static ColumnRow Load(AdomdDataReader dataReader)
{
// Traverse the response and
// read column 1, "TABLE_SCHEMA"
// read column 2, "TABLE_NAME"
// read column 2, "COLUMN_NAME"
// Get the column value
string perspectiveName = dataReader.GetString(1);
string tableName = dataReader.GetString(2);
string columnName = dataReader.GetString(3);
if (tableName.StartsWith("$") && columnName!="RowNumber")
{
// Get the column value
var row = new ColumnRow();
row.Name = columnName;
return row;
}
else
return null;
}
internal IEnumerable <ColumnRow> Discover(IEnumerable <IFilter> filters)
{
var columns = new List <ColumnRow>();
Inform("Investigating columns");
using (var cmd = CreateCommand())
{
var adomdFiltering = Build(filters);
cmd.CommandText = string.Format("select * from $system.dbschema_columns where 1=1{0}", adomdFiltering);
var rdr = ExecuteReader(cmd);
while (rdr.Read())
{
var row = ColumnRow.Load(rdr);
if (row != null)
{
columns.Add(row);
}
}
}
return(columns);
}
