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UNION查出来后使用代码拼接

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程序员小墨 2022-10-20 00:53:34 +08:00
parent e521c139e2
commit 4a245ceba4
1 changed files with 13 additions and 5 deletions
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18
netease_music/src/getInfo/songInfoUtils.js
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@ -14,9 +14,12 @@ async function fetchAll({ args = {} }) {
args.min ? `song_id > ${args.min}` : '1=1',
args.max ? `song_id <= ${args.max}` : '1=1',
].join(' AND ');
var sql = `
var sql1 = `
SELECT song_id FROM song_artist_relation WHERE ${whereClause} AND song_id NOT IN ( SELECT song_id FROM song )
UNION
${args.order ? `ORDER BY song_id ${args.order}` : ''}
${args.limit ? `LIMIT ${args.limit}` : ''}
`;
var sql2 = `
SELECT song_id FROM song_album_relation WHERE ${whereClause} AND song_id NOT IN ( SELECT song_id FROM song )
${args.order ? `ORDER BY song_id ${args.order}` : ''}
${args.limit ? `LIMIT ${args.limit}` : ''}
@ -25,10 +28,15 @@ async function fetchAll({ args = {} }) {
// sql = `SELECT song_id FROM song WHERE data_version = 1`;
// 测试用
// sql = `SELECT song_id FROM song_artist_relation group by song_id limit 10`;
console.log(sql);
console.log(sql1);
var songIds1 = await dbUtils.query(sql1, []);
songIds1 = songIds1.map(item => item.song_id);
var songIds = await dbUtils.query(sql, []);
songIds = songIds.map(item => item.song_id);
console.log(sql2);
var songIds2 = await dbUtils.query(sql2, []);
songIds2 = songIds2.map(item => item.song_id);
var songIds = songIds1.concat(songIds2);
songIds = Array.from(new Set(songIds)); // 去重
// 0 - 100, 200 - 399, 400 - ..., ... - songIds.length-1