篮球火箭球员赛季得分持续增长（火箭球员本赛季得分稳步攀升）

ivenr

Providing analysis tools

If they want an analysis, I should offer SQL and pandas methods to check seasons where points per game (PPG) strictly increase for each Rockets player. I'll include an option to calculate the longest streak. I envision querying a table called player_season_stats(player, team, season, ppg) while filtering by team='HOU'. To find where PPG increases, I'll use lag(ppg) and compute streaks accordingly. Plus, I might add a way to identify players whose PPG increased over specific seasons.Crafting SQL for analysis

I need to create an SQL query to analyze player performance. First, I’ll define a common table expression (CTE) s to select player stats for the Houston team, including the previous PPG using the lag function.

Then, I’ll create another CTE, g, to identify break flags for non-increasing sequences. I’ll count the increasing streaks using a cumulative sum in another CTE, r. Finally, I want to select and group the data to find players with at least three strictly increasing seasons, ensuring Boolean casts are appropriate for different SQL dialects.Providing SQL and pandas versions

I need to prepare SQL versions for PostgreSQL and SQLite, along with a pandas implementation. For pandas, I’ll create a DataFrame with columns for 'player', 'team', 'season', and 'ppg', filtering for the Houston team and sorting the data.

I’ll define a function to compute the longest strictly increasing run in PPG values. This includes checking for consecutive true values and resetting the count when sequences break. I must be careful with the logic to accurately reflect increasing streaks.Clarifying approach and providing code

I’m defining the actual run length in seasons as the number of consecutive True values plus one. I'll group the True runs and find the maximum size, but also need to ensure I handle cases where all values are False.

To simplify things, I’ll create a function to filter players whose PPG is strictly increasing over a given range. We’ll need to check for at least N seasons and could consider their entire tenure with Houston.

I also wonder if they want a headline generator; it might be best to clarify and propose a code path. I’ll keep my final answer concise and structured with appropriate headers.Composing options for the user

I need to structure my response using code blocks for clarity, avoiding shell calls. I’ll start by asking the user what they want: 1) to write a copy or headline; 2) to validate data and query which Rockets players have consistently increasing PPG; or 3) to create a chart.

If they choose option 2, I’ll provide SQL and pandas code that defines "持续增长" as strictly monotonic increasing PPG across consecutive seasons for the Houston team, requiring a minimum number of seasons. I'll ensure my response is concise while covering these options effectively.

你是想要：

写一句/一段描述“火箭球员赛季得分持续增长”的文案？
还是用数据/代码找出哪位火箭球员的赛季得分逐年上升（如按PPG、连续若干赛季）？
或画一张随赛季上升的折线图？

如果是数据分析，下面给你现成代码（可按需改“持续增长”的定义：严格递增、至少N个赛季、按PPG或总分）。

SQL（PostgreSQL示例，找出在火箭队期间，PPG连续严格上升且至少3个赛季的区间）

onAS

-- 表结构假设: player_season_stats(player, team, season, ppg)
WITH s AS (
  SELECT
    player, season, ppg,
    LAG(ppg) OVER (PARTITION BY player ORDER BY season) AS prev_ppg
  FROM player_season_stats
  WHERE team = 'HOU'
),
r AS (
  SELECT
    player, season, ppg, prev_ppg,
    SUM(CASE WHEN prev_ppg IS NULL OR ppg <= prev_ppg THEN 1 ELSE 0 END)
      OVER (PARTITION BY player ORDER BY season) AS grp
  FROM s
)
SELECT
  player,
  MIN(season) AS start_season,
  MAX(season) AS end_season,
  COUNT(*)    AS seasons,
  MIN(ppg)    AS start_ppg,
  MAX(ppg)    AS end_ppg
FROM r
GROUP BY player, grp
HAVING
  COUNT(*) >= 3
  AND MIN(CASE WHEN prev_ppg IS NULL THEN 1 ELSE (ppg > prev_ppg)::int END) = 1
ORDER BY seasons DESC, player;

Pandas（找出火箭队内“严格递增PPG”的最长连续区间，并筛选至少3季）

import pandas as pd
import numpy as np

# df: columns = ["player","team","season","ppg"]
hou = df[df["team"] == "HOU"].copy()
hou = hou.sort_values(["player","season"])

def longest_increasing_block(g):
    # g: rows of one player in HOU sorted by season
    s = g["ppg"].to_numpy()
    seasons = g["season"].to_numpy()

    # inc[i] 是 season[i] 到 season[i+1] 是否上升
    inc = np.diff(s) > 0
    if len(inc) == 0:
        return pd.Series({"start_season": seasons[0], "end_season": seasons[0],
                          "seasons": 1, "start_ppg": s[0], "end_ppg": s[0]})

    # 找 inc 中 True 的最长连续段；长度k意味着赛季数为 k+1
    # 将连续段分组
    grp = np.cumsum(np.concatenate(([True], inc[1:] != inc[:-1])))
    # 仅看 True 段
    max_len = 0
    best_start_idx = 0
    for g_id in np.unique(grp[inc]):  # 只遍历 True 段
        idxs = np.where((grp == g_id) & inc)[0]
        k = len(idxs)
        if k > max_len:
            max_len = k
            best_start_idx = idxs[0]

    if max_len == 0:
        # 没有任何上升，取单季作为区间
        i0 = 0
        return pd.Series({"start_season": seasons[i0], "end_season": seasons[i0],
                          "seasons": 1, "start_ppg": s[i0], "end_ppg": s[i0]})
    else:
        i0 = best_start_idx
        i1 = best_start_idx + max_len  # 结束赛季索引（包含）
        return pd.Series({"start_season": seasons[i0], "end_season": seasons[i1],
                          "seasons": int(max_len + 1),
                          "start_ppg": float(s[i0]), "end_ppg": float(s[i1])})

res = hou.groupby("player", group_keys=False).apply(longest_increasing_block).reset_index()

# 至少3个赛季的严格递增区间
res_3plus = res[res["seasons"] >= 3].sort_values(["seasons","player"], ascending=[False, True])
print(res_3plus)

可选调整

指标：把 ppg 换成 pts（单赛季总分）或 ts_pct 等效率指标。
队伍范围：改为球员生涯全队，或仅限火箭队季后赛。
定义：允许“非下降”（>=）、允许一次小幅回落、要求最少赛季数 N。
可视化：对筛出的球员画赛季-PPG折线标注递增区间。

告诉我你更偏向文案还是数据分析；如果有具体球员/赛季范围/指标口径，我可以直接代你跑出结果。