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116 lines
3.7 KiB
Markdown
Executable File
116 lines
3.7 KiB
Markdown
Executable File
# Functions for working with IP addresses
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## IPv4NumToString(num)
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Takes a UInt32 number. Interprets it as an IPv4 address in big endian. Returns a string containing the corresponding IPv4 address in the format A.B.C.d (dot-separated numbers in decimal form).
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## IPv4StringToNum(s)
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The reverse function of IPv4NumToString. If the IPv4 address has an invalid format, it returns 0.
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## IPv4NumToStringClassC(num)
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Similar to IPv4NumToString, but using xxx instead of the last octet.
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Example:
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```sql
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SELECT
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IPv4NumToStringClassC(ClientIP) AS k,
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count() AS c
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FROM test.hits
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GROUP BY k
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ORDER BY c DESC
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LIMIT 10
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```
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```text
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┌─k──────────────┬─────c─┐
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│ 83.149.9.xxx │ 26238 │
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│ 217.118.81.xxx │ 26074 │
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│ 213.87.129.xxx │ 25481 │
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│ 83.149.8.xxx │ 24984 │
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│ 217.118.83.xxx │ 22797 │
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│ 78.25.120.xxx │ 22354 │
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│ 213.87.131.xxx │ 21285 │
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│ 78.25.121.xxx │ 20887 │
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│ 188.162.65.xxx │ 19694 │
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│ 83.149.48.xxx │ 17406 │
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└────────────────┴───────┘
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```
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Since using 'xxx' is highly unusual, this may be changed in the future. We recommend that you don't rely on the exact format of this fragment.
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### IPv6NumToString(x)
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Accepts a FixedString(16) value containing the IPv6 address in binary format. Returns a string containing this address in text format.
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IPv6-mapped IPv4 addresses are output in the format ::ffff:111.222.33.44. Examples:
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```sql
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SELECT IPv6NumToString(toFixedString(unhex('2A0206B8000000000000000000000011'), 16)) AS addr
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```
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```text
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┌─addr─────────┐
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│ 2a02:6b8::11 │
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└──────────────┘
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```
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```sql
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SELECT
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IPv6NumToString(ClientIP6 AS k),
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count() AS c
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FROM hits_all
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WHERE EventDate = today() AND substring(ClientIP6, 1, 12) != unhex('00000000000000000000FFFF')
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GROUP BY k
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ORDER BY c DESC
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LIMIT 10
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```
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```text
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┌─IPv6NumToString(ClientIP6)──────────────┬─────c─┐
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│ 2a02:2168:aaa:bbbb::2 │ 24695 │
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│ 2a02:2698:abcd:abcd:abcd:abcd:8888:5555 │ 22408 │
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│ 2a02:6b8:0:fff::ff │ 16389 │
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│ 2a01:4f8:111:6666::2 │ 16016 │
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│ 2a02:2168:888:222::1 │ 15896 │
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│ 2a01:7e00::ffff:ffff:ffff:222 │ 14774 │
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│ 2a02:8109:eee:ee:eeee:eeee:eeee:eeee │ 14443 │
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│ 2a02:810b:8888:888:8888:8888:8888:8888 │ 14345 │
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│ 2a02:6b8:0:444:4444:4444:4444:4444 │ 14279 │
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│ 2a01:7e00::ffff:ffff:ffff:ffff │ 13880 │
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└─────────────────────────────────────────┴───────┘
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```
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```sql
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SELECT
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IPv6NumToString(ClientIP6 AS k),
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count() AS c
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FROM hits_all
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WHERE EventDate = today()
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GROUP BY k
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ORDER BY c DESC
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LIMIT 10
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```
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```text
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┌─IPv6NumToString(ClientIP6)─┬──────c─┐
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│ ::ffff:94.26.111.111 │ 747440 │
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│ ::ffff:37.143.222.4 │ 529483 │
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│ ::ffff:5.166.111.99 │ 317707 │
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│ ::ffff:46.38.11.77 │ 263086 │
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│ ::ffff:79.105.111.111 │ 186611 │
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│ ::ffff:93.92.111.88 │ 176773 │
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│ ::ffff:84.53.111.33 │ 158709 │
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│ ::ffff:217.118.11.22 │ 154004 │
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│ ::ffff:217.118.11.33 │ 148449 │
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│ ::ffff:217.118.11.44 │ 148243 │
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└────────────────────────────┴────────┘
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```
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## IPv6StringToNum(s)
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The reverse function of IPv6NumToString. If the IPv6 address has an invalid format, it returns a string of null bytes.
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HEX can be uppercase or lowercase.
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