sql - "SQL logic error or missing database"- 插入多行时出错

Question

查询:

INSERT INTO "Track"
SELECT "Leonard Collections" AS "Album",
       "Instrumental" AS "Artist",
       "00:02:59.3800000" AS "Duration",
       "1/1/0001 12:00:00 AM" AS "ReleasedDate",
       "If You Love Me" AS "Title",
       "False" AS "IsPlayableOnLocal"
UNION
SELECT "Leonard Collections",
       "Instrumental",
       "00:02:56.6930000",
       "1/1/0001 12:00:00 AM",
       "Espoir",
       "False",
UNION
SELECT "Leonard Collections",
       "Instrumental",
       "00:03:51.6770000",
       "1/1/0001 12:00:00 AM",
       "Don't Cry For My Argentina",
       "False"

错误:

SQL logic error or missing database

near "UNION": syntax error

表格:

CREATE TABLE Track 
(
    ID INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL , 
    Album VARCHAR(100) NULL , 
    Artist VARCHAR(255) NOT NULL DEFAULT "Artist Unknown", 
    Duration VARCHAR(255) NOT NULL , 
    LocalPath VARCHAR(255) NULL , 
    ReleasedDate DATE NOT NULL , 
    Title VARCHAR(255) NULL , 
    IsPlayableOnLocal INTEGER NOT NULL , 
    Rating VARCHAR(255) NULL
)

我的查询有什么问题？

Answer 1

既然你提到了最新版本的 SQLite，你应该使用多值插入(SQLite 从 3.7.11 版本开始支持)，像这样:

INSERT INTO mytable (col1, col2, col3) VALUES
    (1, 2, "abc"),
    (2, 4, "xyz"),
    (3, 5, "aaa"),
    (4, 7, "bbb");

这样更短、更快并且更不容易出错。其他一些数据库(至少 MySQL 和 PostgreSQL)也支持这种语法。