WIP

compare in row.cpp shoud take into account m_visible

TODO

• create local_install.sh

• set xxx - without value to reset to default value

• escape " in save csv

• is null | is not null

• coalesce, date functions now, add_date; string functions rtrim, ltrim, rpad, lpad; math function round

• add pipe | concatenation

• add support for 1_000_000 numbers

• expand_asterix_char should support multiple and everywhere *

• support for uniqueue indexes (primary key)

• support for indexes

  • add drop m_index

• support for joining

• add const wherever should be

• use static methods where posible

• use references where pointer cannot be nullptr