55 lines
1.3 KiB
Go
55 lines
1.3 KiB
Go
//go:build ignore
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package main
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import (
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"database/sql"
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"fmt"
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"log"
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"os"
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_ "github.com/lib/pq"
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)
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func main() {
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// DSN matches the one in connect.go and .env
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// Built from the environment, not hardcoded. This line used to carry the
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// production host and password in plaintext, in a file tracked by git — so
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// the live database credential shipped with every clone. Export DB_HOST,
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// DB_USER, DB_PASSWORD, DB_NAME and DB_PORT (or source .env) before running.
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dsn := fmt.Sprintf(
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"host=%s user=%s password=%s dbname=%s port=%s sslmode=disable",
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os.Getenv("DB_HOST"), os.Getenv("DB_USER"), os.Getenv("DB_PASSWORD"),
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os.Getenv("DB_NAME"), os.Getenv("DB_PORT"),
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)
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db, err := sql.Open("postgres", dsn)
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if err != nil {
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log.Fatalf("Failed to open DB: %v", err)
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}
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defer db.Close()
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if err := db.Ping(); err != nil {
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log.Fatalf("Failed to ping DB: %v", err)
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}
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fmt.Println("--- Listing Tables in logistics Database ---")
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rows, err := db.Query(`
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SELECT table_name
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FROM information_schema.tables
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WHERE table_schema = 'public'
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ORDER BY table_name;
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`)
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if err != nil {
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log.Fatalf("Failed to query tables: %v", err)
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}
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defer rows.Close()
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for rows.Next() {
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var name string
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if err := rows.Scan(&name); err != nil {
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log.Fatalf("Scan failed: %v", err)
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}
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fmt.Printf("Table: %s\n", name)
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}
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}
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