Julia: PostgreSQL のデータを読む (Read)

postgre_read.jl

#! /usr/bin/julia
#
#	postgre_read.jl
#
#						Dec/28/2021
# --------------------------------------------------------------------
using LibPQ
using DotEnv
# --------------------------------------------------------------------
println("*** 開始 ***")
cfg=DotEnv.config()
user=cfg["user"]
password=cfg["password"]
data_base=cfg["data_base"]

str_connect = "dbname= " * data_base * " host=127.0.0.1 user=scott password=tiger123 port=5432"
conn = LibPQ.Connection(str_connect)
command = "select * from cities"
results = execute(conn, command)
for row in results
	print(row[1],'\t',row[2],'\t')
	println(row[3],'\t',row[4])
end
#
close(conn)
#
println("*** 終了 ***")
# --------------------------------------------------------------------

確認したバージョン

$ julia --version
julia version 1.10.2