How can I find the unique phone numbers (and collapse them into a single column) from table_1 (while keeping the IDs and date fields), and remove phone numbers that appear in table_2? table_1 ID phone1 phone2 date 1 1111111111 2021-12-31 5 2222222222 3333333333 2020-11-08 8 5555555555 2021-03-15 14 7777777777 8888888888 2016-10-20 table_2 ID phone1 phone2 […]
Month: December 2021
This story originally appeared on Best Stocks Plexiglass stocks: a great investment in the last 2 years Plexiglass – together with more traditional masks – have had a tremendous impact in preventing the spread of Coronavirus. When the World Health Organization declared COVID-19 a Pandemic in March 2020 many companies required their employees to wear masks […]
