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This package provides procedures that can be used to retrieve the byte value of a single column, or a series of columns, in any table.
These procedures, along with a publicly documented meta-data structure for columns, can be used to retrieve the row content for row data on which the hash or user signature is computed.
It appears likely that this package is connected to Blockchain tables.
TYPE column_list IS VARRAY(1024) OF VARCHAR2(128);
no data found from <table_name> column <column_name> at row specified by rowid '<rowid>'