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satori
2024-11-10 10:08:40 +08:00
parent b4400f00de
commit 661a124dd5
1 changed files with 11 additions and 15 deletions
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26
api/graphql.go
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@@ -442,19 +442,9 @@ func NewSchema(config Config) (graphql.Schema, error) {
} }
mapstructure.Decode(p.Args, &args) mapstructure.Decode(p.Args, &args)
// 限制长度防止全表扫描
//var limit = 10
//if args.First != 0 {
// limit = args.First
//} else if args.Last != 0 {
// limit = args.Last
//}
var total int var total int
var images []Image var images []Image
//var query = db.Limit(limit).Table("web_images") var query = goqu.Dialect("mysql").Select("web_images.id", goqu.L("ROW_NUMBER() OVER(ORDER BY id ASC)").As("row_num")).From("web_images")
//order := "ORDER BY " + p.Args["sort"].(string) + " " + p.Args["order"].(string)
var query = goqu.Dialect("mysql").Select("id", goqu.L("ROW_NUMBER() OVER(ORDER BY id ASC)").As("row_num")).From("web_images")
// 参数映射 // 参数映射
var argFormat = []string{"id", "width", "height", "content", "remark", "description", "tags", "rank", "comment_num", "praise_count", "collect_count", "article_id", "user_id"} var argFormat = []string{"id", "width", "height", "content", "remark", "description", "tags", "rank", "comment_num", "praise_count", "collect_count", "article_id", "user_id"}
@@ -462,7 +452,6 @@ func NewSchema(config Config) (graphql.Schema, error) {
// 筛选条件 // 筛选条件
for _, format := range argFormat { for _, format := range argFormat {
if p.Args[format] != nil { if p.Args[format] != nil {
//query = query.Where(fmt.Sprintf("web_images.%s = ?", format), p.Args[format])
query.Where(goqu.Ex{fmt.Sprintf("web_images.%s = ?", format): p.Args[format]}) query.Where(goqu.Ex{fmt.Sprintf("web_images.%s = ?", format): p.Args[format]})
} }
} }
@@ -658,16 +647,23 @@ func NewSchema(config Config) (graphql.Schema, error) {
// 取所有数据的前N条 // 取所有数据的前N条
var cursor string var cursor string
if args.After != 0 { if args.After != 0 {
cursor = fmt.Sprintf(`WHERE row_num > (SELECT row_num FROM RankedArticles WHERE id = %d)`, args.After) cursor = fmt.Sprintf(`WHERE row_num > (SELECT row_num FROM RankedArticles WHERE RankedArticles.id = %d)`, args.After)
}
var limit int = 10
if args.First != 0 {
limit = args.First
} else if args.Last != 0 {
limit = args.Last
} }
// 取大于游标的数据 // 取大于游标的数据
sql = fmt.Sprintf(` sql = fmt.Sprintf(`
WITH RankedArticles AS (%s) WITH RankedArticles AS (%s)
SELECT web_images.* FROM web_images JOIN( SELECT web_images.* FROM web_images JOIN(
SELECT id FROM RankedArticles %s ORDER BY row_num LIMIT 5 SELECT RankedArticles.id FROM RankedArticles %s ORDER BY row_num LIMIT %d
) AS LimitedRanked ON web_images.id = LimitedRanked.id; ) AS LimitedRanked ON web_images.id = LimitedRanked.id;
`, sql, cursor) `, sql, cursor, limit)
fmt.Println(sql) fmt.Println(sql)