added new file go/sql/l2.go for view, delete and added data in database sqlite3

go/sql/l2.go

@@ -0,0 +1,80 @@
+package main
+
+import (
+	"fmt"
+	"bufio"
+	"strings"
+	"os"
+	"database/sql"
+	_ "github.com/mattn/go-sqlite3"
+)
+
+func add(text string, govno string) {
+	db, err := sql.Open("sqlite3", "./base.db")
+	if err != nil { panic(err) }
+	defer db.Close()
+	sqlStmt := `CREATE TABLE IF NOT EXISTS l2 (id INTEGER NOT NULL PRIMARY KEY, name TEXT, govno TEXT)`
+	_, err = db.Exec(sqlStmt)
+	if err != nil {panic(err)}
+	_, err = db.Exec("INSERT INTO l2 (name, govno) VALUES(?, ?)", text, govno)
+	if err != nil { panic(err) }
+}
+
+func view() {
+	db, err := sql.Open("sqlite3", "./base.db")
+	if err != nil {panic(err)}
+	defer db.Close()
+	rows, err := db.Query("SELECT id, name, govno FROM l2")
+	if err != nil {panic(err)}
+	defer rows.Close()
+	for rows.Next() {
+		var id int
+		var name string
+		var govno string
+		rows.Scan(&id, &name, &govno)
+		StringView := fmt.Sprintf("ID %d, Name %s, Thought %s\n", id, name, govno)
+		fmt.Printf("%s", StringView)
+	}
+}
+
+func DeleteByID(id string) {
+	db, err := sql.Open("sqlite3", "./base.db")
+	if err != nil {panic(err)}
+	_, err = db.Exec("DELETE FROM l2 WHERE id = ?", id)
+	if err != nil {panic(err)}
+	fmt.Printf("delete by id %s\n", id)
+}
+
+func main() {
+	scan := bufio.NewScanner(os.Stdin)
+	for {
+		fmt.Printf("1) Added in DB\n2) View all DB\n3) Delete by index\n4) Exit\n")
+		fmt.Printf("Your choise(1/2/3/4) ")
+		var choise int
+		fmt.Scan(&choise)
+		if choise == 1 {
+			fmt.Printf("Your name ")
+			scan.Scan()
+			name := scan.Text()
+			fmt.Printf("enter the thought ")
+			scan.Scan()
+			thought := strings.TrimSpace(scan.Text())
+			add(name, thought)
+			fmt.Printf("Added %s and %s\n", name, thought)
+		} else if choise == 2 {
+			fmt.Println("------------------------")
+			view()
+			fmt.Println("------------------------")
+		} else if choise == 4 {
+			return
+		} else if choise == 3 {
+			fmt.Printf("ID ")
+			scan.Scan()
+			id := scan.Text()
+			DeleteByID(id)
+		} else {
+			fmt.Printf("Incorrect number\n ")
+		}
+
+	}
+}