sql_gen.py: ColDict: Take a keys_table param for operations that require the output table. Use this to convert all string keys to sql_gen.Col objects.

sql.py: put(): Use a sql_gen.ColDict for row, just like in put_table(), so that put() will benefit from planned enhancements to sql_gen.ColDict, such as translating NULL to the default value of a NOT NULL column

schemas/functions.sql: _nullIf: Fixed bug where NOT NULL parameters were not supported, because an input NULL value would not match an existing DEFAULT value in a select query, by temporarily disabling _nullIf until this can be supported. Removed previous workarounds.

bin/map: out_is_db, row-based mode: Disabled using DB relational functions instead of XML functions because they were causing problems

sql.py: put(): DuplicateKeyException: Fixed bug where select() call needs to be surrounded by value_or_none(), not value(), because sometimes there is no entry

schemas/functions.sql: Added indexes on all relational function parameters since the unique index will not be used for lookups

schemas/py_functions.sql: Added _namePart relational function

schemas/py_functions.sql: Added _dateRangeEnd relational function

main Makefile: schemas/%/uninstall: Removed delete confirmation message because it's repetitive to keep being asked to confirm deletion when running schemas/reinstall. schemas/%/uninstall is not intended to be run by itself, so the public schema's delete confirmation message will protect the entire schemas/uninstall sequence.

schemas/py_functions.sql: _dateRangeStart(): Fixed bug where needed to get the first element of the array returned by parse_date_range()