code: def indexes(table_name, name = nil, schema_name = nil)
        return false unless table_name
        schema, table = extract_schema_and_table(table_name.to_s)
        return false unless table
  
        schema = database_name unless schema
  
        result = select_rows('SELECT DatabaseName, TableName, ColumnName, IndexType, IndexName, UniqueFlag' <<
                             ' FROM DBC.Indices' <<
                             " WHERE TableName (NOT CS) = '#{table}' (NOT CS)" <<
                             " AND DatabaseName (NOT CS) = '#{schema}' (NOT CS)")
  
        result.map do |row|
          idx_table_name = row[1].to_s.strip
          idx_column_name = row[2].to_s.strip
          idx_index_name = row[4].to_s.strip
          idx_unique_flag = row[5].to_s.strip
  
          columns = []
          columns << idx_column_name
  
          IndexDefinition.new(idx_table_name, idx_index_name, (idx_unique_flag == 'Y'), columns)
        end
      end
docs: :nodoc: