ttfb queries (#247)

sql/2019/07_Performance/07_07.sql

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+#standardSQL
+# 07_07: TTFB distribution
+SELECT
+  fast,
+  avg,
+  slow
+FROM (
+  SELECT
+    ROUND(fast_ttfb * 100, 2) AS fast,
+    ROUND(avg_ttfb * 100, 2) AS avg,
+    ROUND(slow_ttfb * 100, 2) AS slow,
+    ROW_NUMBER() OVER (ORDER BY fast_ttfb DESC) AS row,
+    COUNT(0) OVER () AS n
+  FROM
+    `chrome-ux-report.materialized.metrics_summary`
+  WHERE
+    date = '2019-07-01' AND
+    fast_ttfb + avg_ttfb + slow_ttfb > 0
+  ORDER BY
+    fast DESC)
+WHERE
+  MOD(row, CAST(FLOOR(n / 1000) AS INT64)) = 0

sql/2019/07_Performance/07_07b.sql

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+#standardSQL
+# 07_07b: TTFB desktop distribution
+SELECT
+  fast,
+  avg,
+  slow
+FROM (
+  SELECT
+    device,
+    ROUND(SAFE_DIVIDE(fast_ttfb, fast_ttfb + avg_ttfb + slow_ttfb) * 100, 2) AS fast,
+    ROUND(SAFE_DIVIDE(avg_ttfb, fast_ttfb + avg_ttfb + slow_ttfb) * 100, 2) AS avg,
+    ROUND(SAFE_DIVIDE(slow_ttfb, fast_ttfb + avg_ttfb + slow_ttfb) * 100, 2) AS slow,
+    ROW_NUMBER() OVER (ORDER BY fast_ttfb DESC) AS row,
+    COUNT(0) OVER () AS n
+  FROM
+    `chrome-ux-report.materialized.device_summary`
+  WHERE
+    yyyymm = '201907' AND
+    fast_ttfb + avg_ttfb + slow_ttfb > 0 AND
+    device = 'desktop'
+  ORDER BY
+    fast DESC)
+WHERE
+  MOD(row, CAST(FLOOR(n / 1000) AS INT64)) = 0

sql/2019/07_Performance/07_07c.sql

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+#standardSQL
+# 07_07c: TTFB phone distribution
+SELECT
+  fast,
+  avg,
+  slow
+FROM (
+  SELECT
+    device,
+    ROUND(SAFE_DIVIDE(fast_ttfb, fast_ttfb + avg_ttfb + slow_ttfb) * 100, 2) AS fast,
+    ROUND(SAFE_DIVIDE(avg_ttfb, fast_ttfb + avg_ttfb + slow_ttfb) * 100, 2) AS avg,
+    ROUND(SAFE_DIVIDE(slow_ttfb, fast_ttfb + avg_ttfb + slow_ttfb) * 100, 2) AS slow,
+    ROW_NUMBER() OVER (ORDER BY fast_ttfb DESC) AS row,
+    COUNT(0) OVER () AS n
+  FROM
+    `chrome-ux-report.materialized.device_summary`
+  WHERE
+    yyyymm = '201907' AND
+    fast_ttfb + avg_ttfb + slow_ttfb > 0 AND
+    device = 'phone'
+  ORDER BY
+    fast DESC)
+WHERE
+  MOD(row, CAST(FLOOR(n / 1000) AS INT64)) = 0

sql/2019/07_Performance/07_08.sql

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+#standardSQL
+# 07_08: % fast TTFB using FCP-like thresholds
+SELECT
+  ROUND(COUNTIF(fast_ttfb >= .9) * 100 / COUNT(0), 2) AS pct_fast_ttfb,
+  ROUND(COUNTIF(NOT(slow_ttfb >= .1) AND NOT(fast_ttfb >= .9)) * 100 / COUNT(0), 2) AS pct_avg_ttfb,
+  ROUND(COUNTIF(slow_ttfb >= .1) * 100 / COUNT(0), 2) AS pct_slow_ttfb
+FROM
+  `chrome-ux-report.materialized.metrics_summary`
+WHERE
+  date = '2019-07-01' AND
+  fast_ttfb + avg_ttfb + slow_ttfb > 0

sql/2019/07_Performance/07_08b.sql

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+#standardSQL
+# 07_08b: % fast TTFB by device
+SELECT
+  device,
+  ROUND(COUNTIF(fast_ttfb >= .9) * 100 / COUNT(0), 2) AS pct_fast_ttfb,
+  ROUND(COUNTIF(NOT(slow_ttfb >= .1) AND NOT(fast_ttfb >= .9)) * 100 / COUNT(0), 2) AS pct_avg_ttfb,
+  ROUND(COUNTIF(slow_ttfb >= .1) * 100 / COUNT(0), 2) AS pct_slow_ttfb
+FROM (
+  SELECT
+    device,
+    SAFE_DIVIDE(fast_ttfb, fast_ttfb + avg_ttfb + slow_ttfb) AS fast_ttfb,
+    SAFE_DIVIDE(avg_ttfb, fast_ttfb + avg_ttfb + slow_ttfb) AS avg_ttfb,
+    SAFE_DIVIDE(slow_ttfb, fast_ttfb + avg_ttfb + slow_ttfb) AS slow_ttfb
+  FROM
+    `chrome-ux-report.materialized.device_summary`
+  WHERE
+    yyyymm = '201907' AND
+    fast_ttfb + avg_ttfb + slow_ttfb > 0 AND
+    device IN ('desktop', 'phone'))
+GROUP BY
+  device

sql/2019/07_Performance/07_08c.sql

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+#standardSQL
+# 07_08c: % fast TTFB by ECT
+SELECT
+  speed,
+  ROUND(COUNTIF(fast_ttfb >= .9) * 100 / COUNT(0), 2) AS pct_fast_ttfb,
+  ROUND(COUNTIF(NOT(slow_ttfb >= .1) AND NOT(fast_ttfb >= .9)) * 100 / COUNT(0), 2) AS pct_avg_ttfb,
+  ROUND(COUNTIF(slow_ttfb >= .1) * 100 / COUNT(0), 2) AS pct_slow_ttfb
+FROM (
+  SELECT
+    effective_connection_type.name AS speed,
+    ROUND(SAFE_DIVIDE(SUM(IF(bin.start < 200, bin.density, 0)), SUM(bin.density)), 4) AS fast_ttfb,
+    ROUND(SAFE_DIVIDE(SUM(IF(bin.start >= 200 AND bin.start < 1000, bin.density, 0)), SUM(bin.density)), 4) AS avg_ttfb,
+    ROUND(SAFE_DIVIDE(SUM(IF(bin.start >= 1000, bin.density, 0)), SUM(bin.density)), 4) AS slow_ttfb
+  FROM
+    `chrome-ux-report.all.201907`,
+    UNNEST(experimental.time_to_first_byte.histogram.bin) AS bin
+  GROUP BY
+    origin,
+    speed)
+GROUP BY
+  speed
+ORDER BY
+  pct_fast_ttfb DESC