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Select a map of key : column name and value : column value from the database - set sql() before calling.
Select a map of rows from the database with column name as key and valueClass as value (should be Object if types differ) from the database - set sql() before calling
Example: select first_name, last_name, middle_name from person where rownum < 3:
List(0)
Map key Map value
first_name Fred
last_name Jones
middle_name Percival
List(1)
Map key Map value
first_name Jeanette
last_name Shawna
middle_name Percival