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