2019，大大改进的答案：
#standardSQL
# replace with your source of IP addresses
# here I'm using the same Wikipedia set from the previous article
WITH source_of_ip_addresses AS (
SELECT REGEXP_REPLACE(contributor_ip, 'xxx', '0') ip, COUNT(*) c
FROM `publicdata.samples.wikipedia`
WHERE contributor_ip IS NOT null
GROUP BY 1
)
SELECT country_name, SUM(c) c
FROM (
SELECT ip, country_name, c
FROM (
SELECT *, NET.SAFE_IP_FROM_STRING(ip) & NET.IP_NET_MASK(4, mask) network_bin
FROM source_of_ip_addresses, UNNEST(GENERATE_ARRAY(9,32)) mask
WHERE BYTE_LENGTH(NET.SAFE_IP_FROM_STRING(ip)) = 4
)
JOIN `fh-bigquery.geocode.201806_geolite2_city_ipv4_locs`
USING (network_bin, mask)
)
GROUP BY 1
ORDER BY 2 DESC
此答案的清理版本位于：http:
//googlecloudplatform.blogspot.com/2014/03/geoip-geolocation-with-google-bigquery.html
让我整理一下原始查询：
SELECT
id,
client_ip,
client_ip_code,
B.Country_Name AS Country_Name
FROM (
SELECT
id,
contributor_ip AS client_ip,
INTEGER(PARSE_IP(contributor_ip)) AS client_ip_code,
1 AS One
FROM
[publicdata:samples.wikipedia]
WHERE contributor_ip IS NOT NULL
LIMIT
1000
) AS A1
LEFT JOIN
(
SELECT
From_IP_Code,
To_IP_Code,
Country_Name,
1 AS One
FROM
--3 IP sets: 1.valid ranges, 2.Gaps, 3. Gap at the END of the set
(
SELECT
From_IP_Code,
To_IP_Code,
Country_Name
FROM
[playscape-proj:GeoIP.GeoIP]) -- all Ranges ov valid IPs
,
(
SELECT
PriorRangeEndIP+1 From_IP_Code,
From_IP_Code-1 AS To_IP_Code,
'NA' AS Country_Name -- Missing rages lower FROM From_IP
from(
SELECT
From_IP_Code,
To_IP_Code,
Country_Name
,
LAG(To_IP_Code,
1,
INTEGER(0)) OVER(
ORDER BY
From_IP_Code ASC) PriorRangeEndIP --use of LAG function to find prior valid range
FROM
[playscape-proj:GeoIP.GeoIP])A
WHERE
From_IP_Code>PriorRangeEndIP+1) -- If gap FROM prior valid range IS >1 than its a gap to fill
,
(
SELECT
MAX(To_IP_Code)+1 AS From_IP_Code,
INTEGER (4311810304) AS To_IP_Code,
'NA' AS Country_Name -- Missing rages higher tan Max To_IP
FROM
[playscape-proj:GeoIP.GeoIP])
) AS B
ON A1.ONE=B.ONE --fake JOIN condition to overcome allowed use of = only IN joins
WHERE
A1.client_ip_code>=B.From_IP_Code
AND A1.client_ip_code<=B.To_IP_Code -- JOIN condition WHERE valid IP exists ON left
OR (A1.client_ip_code IS NULL
AND B.From_IP_Code=1 ) -- WHERE there IS no valid IP ON left contributor_ip;
这是一个很长的查询！（和一个非常有趣的）。它在 14 秒内运行。我们如何优化它？
我发现的一些技巧：
- 跳过 NULL。如果日志中没有 ip 地址，请不要尝试匹配它。
- 减少组合。与其将每个左侧记录与每个右侧记录连接起来，不如仅将左侧的 39.xxx 记录与右侧的 39.xxx 记录连接起来。只有少数（3 或 4）条规则涵盖多个范围。很容易在 geolite 表上添加一些规则来添加规则来弥补这些差距。
所以我要改变：
1 AS One到INTEGER(PARSE_IP(contributor_ip)/(256*256*256)) AS One（两次）。- 添加“WHERE contributor_ip IS NOT NULL”。
现在它在 3 秒内运行！5% 的 ips 无法定位，可能是由于所描述的差距（容易修复）。
现在，从 LIMIT 1000 到 LIMIT 300000 怎么样。需要多长时间？
37秒！比描述的 25 分钟要好得多。如果你想走得更高，我建议把右边的桌子变成一个静态的——因为一旦计算它就不会改变，它只是基本规则的扩展。然后你可以使用 JOIN EACH。
SELECT
id,
client_ip,
client_ip_code,
B.Country_Name AS Country_Name
FROM (
SELECT
id,
contributor_ip AS client_ip,
INTEGER(PARSE_IP(contributor_ip)) AS client_ip_code,
INTEGER(PARSE_IP(contributor_ip)/(256*256*256)) AS One
FROM
[publicdata:samples.wikipedia]
WHERE contributor_ip IS NOT NULL
LIMIT
300000
) AS A1
JOIN
(
SELECT
From_IP_Code,
To_IP_Code,
Country_Name,
INTEGER(From_IP_Code/(256*256*256)) AS One
FROM
--3 IP sets: 1.valid ranges, 2.Gaps, 3. Gap at the END of the set
(
SELECT
From_IP_Code,
To_IP_Code,
Country_Name
FROM
[playscape-proj:GeoIP.GeoIP]) -- all Ranges ov valid IPs
,
(
SELECT
PriorRangeEndIP+1 From_IP_Code,
From_IP_Code-1 AS To_IP_Code,
'NA' AS Country_Name -- Missing rages lower FROM From_IP
from(
SELECT
From_IP_Code,
To_IP_Code,
Country_Name
,
LAG(To_IP_Code,
1,
INTEGER(0)) OVER(
ORDER BY
From_IP_Code ASC) PriorRangeEndIP --use of LAG function to find prior valid range
FROM
[playscape-proj:GeoIP.GeoIP])A
WHERE
From_IP_Code>PriorRangeEndIP+1) -- If gap FROM prior valid range IS >1 than its a gap to fill
,
(
SELECT
MAX(To_IP_Code)+1 AS From_IP_Code,
INTEGER (4311810304) AS To_IP_Code,
'NA' AS Country_Name -- Missing rages higher tan Max To_IP
FROM
[playscape-proj:GeoIP.GeoIP])
) AS B
ON A1.ONE=B.ONE --fake JOIN condition to overcome allowed use of = only IN joins
WHERE
A1.client_ip_code>=B.From_IP_Code
AND A1.client_ip_code<=B.To_IP_Code -- JOIN condition WHERE valid IP exists ON left
OR (A1.client_ip_code IS NULL
AND B.From_IP_Code=1 ) -- WHERE there IS no valid IP ON left contributor_ip;