Julia: PostgreSQL のデータを読む (Read)

3362 ワード
Read PostgreSQL Julia PostgreSQL テキストリンク
postgre_read.jl
#! /usr/bin/julia
#
#   postgre_read.jl
#
#                       Dec/28/2021
# --------------------------------------------------------------------
using LibPQ
using DotEnv
# --------------------------------------------------------------------
println("*** 開始 ***")
DotEnv.config()
user=ENV["user"]
password=ENV["password"]
data_base=ENV["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 ***")
# --------------------------------------------------------------------