69 lines
2.4 KiB
Go
69 lines
2.4 KiB
Go
package main
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// 诊断：复现 FeaturedIDs("images", 30) 的 SQL，验证热门品牌排名数据是否合理。
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import (
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"fmt"
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"gorm.io/driver/mysql"
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"gorm.io/gorm"
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)
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const dsn = "root:root@tcp(127.0.0.1:3306)/db?charset=utf8mb4&parseTime=True&loc=Local"
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func main() {
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db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{})
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if err != nil {
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panic(err)
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}
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// 1) 复现 FeaturedIDs：按图片总数 DESC 取前 30
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type Row struct {
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BrandID uint32 `gorm:"column:brand_id"`
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Images int64 `gorm:"column:images"`
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Shows int64 `gorm:"column:shows"`
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}
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var rows []Row
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db.Raw(`
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SELECT brand_id, COALESCE(SUM(image_count),0) AS images, COUNT(*) AS shows
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FROM brand_runway
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WHERE is_deleted = 0
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GROUP BY brand_id
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ORDER BY images DESC
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LIMIT 30
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`).Scan(&rows)
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fmt.Println("== FeaturedIDs(images, 30) 原始排名 ==")
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for i, r := range rows {
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var name string
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db.Raw(`SELECT name_en FROM brand WHERE id = ?`, r.BrandID).Scan(&name)
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fmt.Printf("%2d. brand_id=%-6d images=%-6d shows=%-4d %s\n", i+1, r.BrandID, r.Images, r.Shows, name)
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}
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// 2) image_count 分布：有多少品牌有图、多少归零
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var zeroBrands, hasImgBrands int64
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var totalRows, zeroRows int64
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db.Raw(`SELECT COUNT(*) FROM (SELECT brand_id, SUM(image_count) s FROM brand_runway WHERE is_deleted=0 GROUP BY brand_id) t WHERE s = 0`).Scan(&zeroBrands)
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db.Raw(`SELECT COUNT(*) FROM (SELECT brand_id, SUM(image_count) s FROM brand_runway WHERE is_deleted=0 GROUP BY brand_id) t WHERE s > 0`).Scan(&hasImgBrands)
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db.Raw(`SELECT COUNT(*) FROM brand_runway WHERE is_deleted=0`).Scan(&totalRows)
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db.Raw(`SELECT COUNT(*) FROM brand_runway WHERE is_deleted=0 AND image_count=0`).Scan(&zeroRows)
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fmt.Printf("\n== image_count 分布 ==\n有图品牌=%d 零图品牌=%d | 走秀总行=%d 其中 image_count=0 的行=%d\n", hasImgBrands, zeroBrands, totalRows, zeroRows)
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// 3) 对比口径：按走秀数(shows) DESC 前 10
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var byShows []Row
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db.Raw(`
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SELECT brand_id, COALESCE(SUM(image_count),0) AS images, COUNT(*) AS shows
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FROM brand_runway
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WHERE is_deleted = 0
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GROUP BY brand_id
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ORDER BY shows DESC
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LIMIT 10
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`).Scan(&byShows)
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fmt.Println("\n== 若按 shows DESC 前 10 ==")
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for i, r := range byShows {
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var name string
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db.Raw(`SELECT name_en FROM brand WHERE id = ?`, r.BrandID).Scan(&name)
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fmt.Printf("%2d. brand_id=%-6d images=%-6d shows=%-4d %s\n", i+1, r.BrandID, r.Images, r.Shows, name)
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}
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}
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