93 lines
1.6 KiB
Go
93 lines
1.6 KiB
Go
|
package main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"database/sql"
|
||
|
|
"fmt"
|
||
|
|
_ "github.com/mattn/go-sqlite3"
|
||
|
|
"log"
|
||
|
|
"os"
|
||
|
|
)
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
os.Remove("./foo.db")
|
||
|
|
|
||
|
|
db, err := sql.Open("sqlite3", "./foo.db")
|
||
|
|
if err != nil {
|
||
|
|
log.Fatal(err)
|
||
|
|
}
|
||
|
|
defer db.Close()
|
||
|
|
|
||
|
|
sqlStmt := `
|
||
|
|
create table foo (id integer not null primary key, name text);
|
||
|
|
delete from foo;
|
||
|
|
`
|
||
|
|
_, err = db.Exec(sqlStmt)
|
||
|
|
if err != nil {
|
||
|
|
log.Printf("%q: %s\n", err, sqlStmt)
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
tx, err := db.Begin()
|
||
|
|
if err != nil {
|
||
|
|
log.Fatal(err)
|
||
|
|
}
|
||
|
|
stmt, err := tx.Prepare("insert into foo(id, name) values(?, ?)")
|
||
|
|
if err != nil {
|
||
|
|
log.Fatal(err)
|
||
|
|
}
|
||
|
|
defer stmt.Close()
|
||
|
|
for i := 0; i < 100; i++ {
|
||
|
|
_, err = stmt.Exec(i, fmt.Sprintf("こんにちわ世界%03d", i))
|
||
|
|
if err != nil {
|
||
|
|
log.Fatal(err)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
tx.Commit()
|
||
|
|
|
||
|
|
rows, err := db.Query("select id, name from foo")
|
||
|
|
if err != nil {
|
||
|
|
log.Fatal(err)
|
||
|
|
}
|
||
|
|
defer rows.Close()
|
||
|
|
for rows.Next() {
|
||
|
|
var id int
|
||
|
|
var name string
|
||
|
|
rows.Scan(&id, &name)
|
||
|
|
fmt.Println(id, name)
|
||
|
|
}
|
||
|
|
|
||
|
|
stmt, err = db.Prepare("select name from foo where id = ?")
|
||
|
|
if err != nil {
|
||
|
|
log.Fatal(err)
|
||
|
|
}
|
||
|
|
defer stmt.Close()
|
||
|
|
var name string
|
||
|
|
err = stmt.QueryRow("3").Scan(&name)
|
||
|
|
if err != nil {
|
||
|
|
log.Fatal(err)
|
||
|
|
}
|
||
|
|
fmt.Println(name)
|
||
|
|
|
||
|
|
_, err = db.Exec("delete from foo")
|
||
|
|
if err != nil {
|
||
|
|
log.Fatal(err)
|
||
|
|
}
|
||
|
|
|
||
|
|
_, err = db.Exec("insert into foo(id, name) values(1, 'foo'), (2, 'bar'), (3, 'baz')")
|
||
|
|
if err != nil {
|
||
|
|
log.Fatal(err)
|
||
|
|
}
|
||
|
|
|
||
|
|
rows, err = db.Query("select id, name from foo")
|
||
|
|
if err != nil {
|
||
|
|
log.Fatal(err)
|
||
|
|
}
|
||
|
|
defer rows.Close()
|
||
|
|
for rows.Next() {
|
||
|
|
var id int
|
||
|
|
var name string
|
||
|
|
rows.Scan(&id, &name)
|
||
|
|
fmt.Println(id, name)
|
||
|
|
}
|
||
|
|
}
|