Altair personal slc postgresql select the first ob in each group ordered by specific variables
Too long to post on a listserve, see github
github
https://github.com/rogerjdeangelis/utl-altair-personal-slc-postgresql-passthru-select-first-ob-by-group-ordered-by-specific-variables
SAMPLE ODBC
https://github.com/rogerjdeangelis/utl-altair-personal-slc-odbc-sqlite-read-write-access-meta-data
Atemplate for
THREE SOLUTION
1 personal postgresql slc passthru
2 r sqlite
3 python sqlite
ANY DATABASE WITH AN ODBC DRIVER
SLC ENGINES
ACCESS
DB2
EXCEL
XLSX
HADOOP
INFORMIX
MariaDB
MySQL
NETEZZA
ODBC
OLEDB
Oracle
POSTGRESQL
SAPHANA
SNOWFLAKE
SQLSERVER
Sybase
Sybase IQ
TERADATA
communities.sas
https://communities.sas.com/t5/SAS-Programming/How-to-select-the-first-observation-in-each-group-ordered-by/m-p/702524#M215179