Re: WIP: index support for regexp search

On Mon, November 26, 2012 20:49, Alexander Korotkov wrote:

> trgm-regexp-0.6.patch.gz

I ran the simple-minded tests against generated data (similar to the ones I did in January 2012).
The problems of that older version seem pretty much all removed. (although I didn't do much work
on it -- just reran these tests).

I used two 2 instances, 'HEAD' and 'trgm_regex', which were both compiled with

'--enable-depend' '--with-openssl' '--with-perl' '--with-libxml'

Tables used:

rowcount size table size index (trgm)

azjunk4 10^4 rows 1,171,456 | 9,781,248
azjunk5 10^5 rows 11,706,368 | 65,093,632
azjunk6 10^6 rows 117,030,912 | 726,310,912
azjunk7 10^7 rows 1,170,292,736 | 4,976,189,440

(See my previous emails for a generating script)

Tables contain random generated text:

table azjunk7 limit 5;
txt
----------------------------------------------------------------------------------
i kzzhv ssaa zv x xlepzxsgbdkxev v wn dmvqkuwb qxkyvgab gpidaosaqbewqimmai jxj
bvwn zbevtzyhibbn hoctxurutn pvlatjjyxf f runa owpltbcunrbq ux peoook rxwoscbytz
bbjlbbhhkivjivklgbh tvapzogh rj ky ahvgkvvlfudotvqapznludohdoyqrp kvothyclbckbxu
hvic gomewbp izsjifqggyqgzcghdat lb kud ltfqaxqxjjom qkw wqggikgvph yi sftmbjt
edbjfl vtcasudjpgfgjaf swooxygsse flnqd pxzsdmesqhqbzgirswysote muakq agk p w uq
(5 rows)

with index on column 'txt':

create index az7_idx on azjunk7 using gin (txt gin_trgm_ops);

Queries were of the form:

explain analyze select txt from azjunkXX where txt ~ '$REGEX';

The main problem with the January version was that it chose to use the trgm index even when it
could take a long time (hours). This has been resolved as far as I can see, and the results are
now very attractive.

(There does seem to be a very slight regression on the seqscan, but it's so small that I'm not yet
sure it's not noise)

Hardware: AMD FX-8120 with Linux 2.6.32-279.14.1.el6.x86_64 x86_64 GNU/Linux

PostgreSQL 9.3devel-trgm_regex-20121127_2353-e78d288c895bd296e3cb1ca29c7fe2431eef3fcd on
x86_64-unknown-linux-gnu, compiled by gcc (GCC) 4.7.2, 64-bit

port instance table regex rows method expl.analyze timing

6543 HEAD azjunk4 x[ae]q 46 Seq Scan 12.962 ms
6554 trgm_regex azjunk4 x[ae]q 46 Bitmap Heap Scan 0.800 ms

6543 HEAD azjunk4 x[ae]{1}q 46 Seq Scan 12.487 ms
6554 trgm_regex azjunk4 x[ae]{1}q 46 Bitmap Heap Scan 0.209 ms

6543 HEAD azjunk4 x[ae]{1,1}q 46 Seq Scan 12.266 ms
6554 trgm_regex azjunk4 x[ae]{1,1}q 46 Bitmap Heap Scan 0.210 ms

6543 HEAD azjunk4 x[ae]{,2}q 0 Seq Scan 14.322 ms
6554 trgm_regex azjunk4 x[ae]{,2}q 0 Bitmap Heap Scan 0.610 ms

6543 HEAD azjunk4 x[ae]{,10}q 0 Seq Scan 20.503 ms
6554 trgm_regex azjunk4 x[ae]{,10}q 0 Bitmap Heap Scan 0.511 ms

6543 HEAD azjunk4 x[ae]{1,2}q 49 Seq Scan 13.060 ms
6554 trgm_regex azjunk4 x[ae]{1,2}q 49 Bitmap Heap Scan 0.429 ms

6543 HEAD azjunk4 x[aei]q 81 Seq Scan 12.487 ms
6554 trgm_regex azjunk4 x[aei]q 81 Bitmap Heap Scan 0.367 ms

6543 HEAD azjunk4 x[aei]{1}q 81 Seq Scan 12.132 ms
6554 trgm_regex azjunk4 x[aei]{1}q 81 Bitmap Heap Scan 0.336 ms

6543 HEAD azjunk4 x[aei]{1,1}q 81 Seq Scan 12.168 ms
6554 trgm_regex azjunk4 x[aei]{1,1}q 81 Bitmap Heap Scan 0.319 ms

6543 HEAD azjunk4 x[aei]{,2}q 0 Seq Scan 14.586 ms
6554 trgm_regex azjunk4 x[aei]{,2}q 0 Bitmap Heap Scan 0.621 ms

6543 HEAD azjunk4 x[aei]{,10}q 0 Seq Scan 20.134 ms
6554 trgm_regex azjunk4 x[aei]{,10}q 0 Bitmap Heap Scan 0.552 ms

6543 HEAD azjunk4 x[aei]{1,2}q 89 Seq Scan 12.553 ms
6554 trgm_regex azjunk4 x[aei]{1,2}q 89 Bitmap Heap Scan 0.916 ms

6543 HEAD azjunk4 x[aei]{1,3}q 89 Seq Scan 13.055 ms
6554 trgm_regex azjunk4 x[aei]{1,3}q 89 Seq Scan 13.064 ms

6543 HEAD azjunk4 x[aei]q 81 Seq Scan 11.856 ms
6554 trgm_regex azjunk4 x[aei]q 81 Bitmap Heap Scan 0.398 ms

6543 HEAD azjunk4 x[aei]{1}q 81 Seq Scan 11.951 ms
6554 trgm_regex azjunk4 x[aei]{1}q 81 Bitmap Heap Scan 0.369 ms

6543 HEAD azjunk4 x[aei]{1,1}q 81 Seq Scan 12.750 ms
6554 trgm_regex azjunk4 x[aei]{1,1}q 81 Bitmap Heap Scan 0.355 ms

6543 HEAD azjunk4 x[aei]{,2}q 0 Seq Scan 14.032 ms
6554 trgm_regex azjunk4 x[aei]{,2}q 0 Bitmap Heap Scan 0.540 ms

6543 HEAD azjunk4 x[aei]{,10}q 0 Seq Scan 20.377 ms
6554 trgm_regex azjunk4 x[aei]{,10}q 0 Bitmap Heap Scan 0.550 ms

6543 HEAD azjunk4 x[aei]{1,2}q 89 Seq Scan 12.706 ms
6554 trgm_regex azjunk4 x[aei]{1,2}q 89 Bitmap Heap Scan 0.969 ms

6543 HEAD azjunk4 x[aei]{1,3}q 89 Seq Scan 13.127 ms
6554 trgm_regex azjunk4 x[aei]{1,3}q 89 Seq Scan 13.025 ms

6543 HEAD azjunk4 x[aeio]q 105 Seq Scan 12.533 ms
6554 trgm_regex azjunk4 x[aeio]q 105 Bitmap Heap Scan 0.391 ms

6543 HEAD azjunk4 x[aeio]{1}q 105 Seq Scan 12.532 ms
6554 trgm_regex azjunk4 x[aeio]{1}q 105 Bitmap Heap Scan 0.362 ms

6543 HEAD azjunk4 x[aeio]{1,1}q 105 Seq Scan 12.323 ms
6554 trgm_regex azjunk4 x[aeio]{1,1}q 105 Bitmap Heap Scan 0.449 ms

6543 HEAD azjunk4 x[aeio]{,2}q 0 Seq Scan 14.417 ms
6554 trgm_regex azjunk4 x[aeio]{,2}q 0 Bitmap Heap Scan 0.844 ms

6543 HEAD azjunk4 x[aeio]{,10}q 0 Seq Scan 23.056 ms
6554 trgm_regex azjunk4 x[aeio]{,10}q 0 Bitmap Heap Scan 0.668 ms

6543 HEAD azjunk4 x[aeio]{1,2}q 121 Seq Scan 13.072 ms
6554 trgm_regex azjunk4 x[aeio]{1,2}q 121 Seq Scan 13.750 ms

6543 HEAD azjunk4 x[aeio]{1,3}q 123 Seq Scan 12.916 ms
6554 trgm_regex azjunk4 x[aeio]{1,3}q 123 Seq Scan 13.078 ms

6543 HEAD azjunk4 x[aeio]{1,4}q 124 Seq Scan 13.478 ms
6554 trgm_regex azjunk4 x[aeio]{1,4}q 124 Seq Scan 14.334 ms

6543 HEAD azjunk4 x[aeio]{2,4}q 19 Seq Scan 13.922 ms
6554 trgm_regex azjunk4 x[aeio]{2,4}q 19 Seq Scan 13.503 ms

6543 HEAD azjunk4 x[aeio]{3,4}q 3 Seq Scan 14.325 ms
6554 trgm_regex azjunk4 x[aeio]{3,4}q 3 Seq Scan 13.429 ms

6543 HEAD azjunk4 x[aeiou]q 134 Seq Scan 12.356 ms
6554 trgm_regex azjunk4 x[aeiou]q 134 Seq Scan 13.215 ms

6543 HEAD azjunk4 x[aeiou]{1}q 134 Seq Scan 13.005 ms
6554 trgm_regex azjunk4 x[aeiou]{1}q 134 Seq Scan 12.893 ms

6543 HEAD azjunk4 x[aeiou]{1,1}q 134 Seq Scan 12.430 ms
6554 trgm_regex azjunk4 x[aeiou]{1,1}q 134 Seq Scan 13.108 ms

6543 HEAD azjunk4 x[aeiou]{,2}q 0 Seq Scan 14.486 ms
6554 trgm_regex azjunk4 x[aeiou]{,2}q 0 Bitmap Heap Scan 0.349 ms

6543 HEAD azjunk4 x[aeiou]{,10}q 0 Seq Scan 21.597 ms
6554 trgm_regex azjunk4 x[aeiou]{,10}q 0 Bitmap Heap Scan 0.363 ms

6543 HEAD azjunk4 x[aeiou]{1,2}q 156 Seq Scan 13.069 ms
6554 trgm_regex azjunk4 x[aeiou]{1,2}q 156 Seq Scan 13.879 ms

6543 HEAD azjunk4 x[aeiou]{1,3}q 160 Seq Scan 13.005 ms
6554 trgm_regex azjunk4 x[aeiou]{1,3}q 160 Seq Scan 14.016 ms

6543 HEAD azjunk4 x[aeiou]{1,4}q 161 Seq Scan 13.603 ms
6554 trgm_regex azjunk4 x[aeiou]{1,4}q 161 Seq Scan 14.667 ms

6543 HEAD azjunk4 x[aeiou]{2,4}q 27 Seq Scan 13.656 ms
6554 trgm_regex azjunk4 x[aeiou]{2,4}q 27 Seq Scan 14.113 ms

6543 HEAD azjunk4 x[aeiou]{3,4}q 5 Seq Scan 13.541 ms
6554 trgm_regex azjunk4 x[aeiou]{3,4}q 5 Seq Scan 14.265 ms

6543 HEAD azjunk4 x[aeiou]{1,5}q 162 Seq Scan 13.750 ms
6554 trgm_regex azjunk4 x[aeiou]{1,5}q 162 Seq Scan 13.858 ms

6543 HEAD azjunk4 x[aeiou]{2,5}q 28 Seq Scan 13.745 ms
6554 trgm_regex azjunk4 x[aeiou]{2,5}q 28 Seq Scan 13.680 ms

6543 HEAD azjunk4 x[aeiou]{4,5}q 2 Seq Scan 13.577 ms
6554 trgm_regex azjunk4 x[aeiou]{4,5}q 2 Seq Scan 13.755 ms

6543 HEAD azjunk4 x[aeiouy]q 173 Seq Scan 12.106 ms
6554 trgm_regex azjunk4 x[aeiouy]q 173 Seq Scan 12.655 ms

6543 HEAD azjunk4 x[aeiouy]{1}q 173 Seq Scan 12.488 ms
6554 trgm_regex azjunk4 x[aeiouy]{1}q 173 Seq Scan 12.723 ms

6543 HEAD azjunk4 x[aeiouy]{1,1}q 173 Seq Scan 12.525 ms
6554 trgm_regex azjunk4 x[aeiouy]{1,1}q 173 Seq Scan 13.957 ms

6543 HEAD azjunk4 x[aeiouy]{,2}q 0 Seq Scan 14.574 ms
6554 trgm_regex azjunk4 x[aeiouy]{,2}q 0 Bitmap Heap Scan 0.295 ms

6543 HEAD azjunk4 x[aeiouy]{,10}q 0 Seq Scan 20.916 ms
6554 trgm_regex azjunk4 x[aeiouy]{,10}q 0 Bitmap Heap Scan 0.311 ms

6543 HEAD azjunk4 x[aeiouy]{1,2}q 204 Seq Scan 12.730 ms
6554 trgm_regex azjunk4 x[aeiouy]{1,2}q 204 Seq Scan 13.392 ms

6543 HEAD azjunk4 x[aeiouy]{1,3}q 215 Seq Scan 12.824 ms
6554 trgm_regex azjunk4 x[aeiouy]{1,3}q 215 Seq Scan 13.083 ms

6543 HEAD azjunk4 x[aeiouy]{1,4}q 218 Seq Scan 13.985 ms
6554 trgm_regex azjunk4 x[aeiouy]{1,4}q 218 Seq Scan 13.890 ms

6543 HEAD azjunk4 x[aeiouy]{2,4}q 46 Seq Scan 13.735 ms
6554 trgm_regex azjunk4 x[aeiouy]{2,4}q 46 Seq Scan 13.724 ms

6543 HEAD azjunk4 x[aeiouy]{3,4}q 14 Seq Scan 13.470 ms
6554 trgm_regex azjunk4 x[aeiouy]{3,4}q 14 Seq Scan 14.046 ms

6543 HEAD azjunk4 x[aeiouy]{1,5}q 219 Seq Scan 14.245 ms
6554 trgm_regex azjunk4 x[aeiouy]{1,5}q 219 Seq Scan 14.370 ms

6543 HEAD azjunk4 x[aeiouy]{2,5}q 47 Seq Scan 13.483 ms
6554 trgm_regex azjunk4 x[aeiouy]{2,5}q 47 Seq Scan 15.065 ms

6543 HEAD azjunk4 x[aeiouy]{4,5}q 4 Seq Scan 13.394 ms
6554 trgm_regex azjunk4 x[aeiouy]{4,5}q 4 Seq Scan 14.158 ms

6543 HEAD azjunk5 x[ae]q 677 Seq Scan 114.862 ms
6554 trgm_regex azjunk5 x[ae]q 677 Bitmap Heap Scan 2.213 ms

6543 HEAD azjunk5 x[ae]{1}q 677 Seq Scan 119.024 ms
6554 trgm_regex azjunk5 x[ae]{1}q 677 Bitmap Heap Scan 1.800 ms

6543 HEAD azjunk5 x[ae]{1,1}q 677 Seq Scan 118.500 ms
6554 trgm_regex azjunk5 x[ae]{1,1}q 677 Bitmap Heap Scan 1.788 ms

6543 HEAD azjunk5 x[ae]{,2}q 0 Seq Scan 138.023 ms
6554 trgm_regex azjunk5 x[ae]{,2}q 0 Bitmap Heap Scan 9.822 ms

6543 HEAD azjunk5 x[ae]{,10}q 0 Seq Scan 223.479 ms
6554 trgm_regex azjunk5 x[ae]{,10}q 0 Bitmap Heap Scan 9.141 ms

6543 HEAD azjunk5 x[ae]{1,2}q 723 Seq Scan 122.973 ms
6554 trgm_regex azjunk5 x[ae]{1,2}q 723 Bitmap Heap Scan 3.865 ms

6543 HEAD azjunk5 x[aei]q 982 Seq Scan 121.424 ms
6554 trgm_regex azjunk5 x[aei]q 982 Bitmap Heap Scan 2.639 ms

6543 HEAD azjunk5 x[aei]{1}q 982 Seq Scan 119.213 ms
6554 trgm_regex azjunk5 x[aei]{1}q 982 Bitmap Heap Scan 2.769 ms

6543 HEAD azjunk5 x[aei]{1,1}q 982 Seq Scan 121.673 ms
6554 trgm_regex azjunk5 x[aei]{1,1}q 982 Bitmap Heap Scan 2.657 ms

6543 HEAD azjunk5 x[aei]{,2}q 0 Seq Scan 142.256 ms
6554 trgm_regex azjunk5 x[aei]{,2}q 0 Bitmap Heap Scan 5.588 ms

6543 HEAD azjunk5 x[aei]{,10}q 0 Seq Scan 214.769 ms
6554 trgm_regex azjunk5 x[aei]{,10}q 0 Bitmap Heap Scan 9.007 ms

6543 HEAD azjunk5 x[aei]{1,2}q 1075 Seq Scan 128.672 ms
6554 trgm_regex azjunk5 x[aei]{1,2}q 1075 Bitmap Heap Scan 8.079 ms

6543 HEAD azjunk5 x[aei]{1,3}q 1086 Seq Scan 127.069 ms
6554 trgm_regex azjunk5 x[aei]{1,3}q 1086 Bitmap Heap Scan 27.654 ms

6543 HEAD azjunk5 x[aei]q 982 Seq Scan 121.431 ms
6554 trgm_regex azjunk5 x[aei]q 982 Bitmap Heap Scan 2.782 ms

6543 HEAD azjunk5 x[aei]{1}q 982 Seq Scan 121.270 ms
6554 trgm_regex azjunk5 x[aei]{1}q 982 Bitmap Heap Scan 2.603 ms

6543 HEAD azjunk5 x[aei]{1,1}q 982 Seq Scan 120.032 ms
6554 trgm_regex azjunk5 x[aei]{1,1}q 982 Bitmap Heap Scan 2.627 ms

6543 HEAD azjunk5 x[aei]{,2}q 0 Seq Scan 143.379 ms
6554 trgm_regex azjunk5 x[aei]{,2}q 0 Bitmap Heap Scan 4.906 ms

6543 HEAD azjunk5 x[aei]{,10}q 0 Seq Scan 196.212 ms
6554 trgm_regex azjunk5 x[aei]{,10}q 0 Bitmap Heap Scan 4.707 ms

6543 HEAD azjunk5 x[aei]{1,2}q 1075 Seq Scan 127.050 ms
6554 trgm_regex azjunk5 x[aei]{1,2}q 1075 Bitmap Heap Scan 8.474 ms

6543 HEAD azjunk5 x[aei]{1,3}q 1086 Seq Scan 127.090 ms
6554 trgm_regex azjunk5 x[aei]{1,3}q 1086 Bitmap Heap Scan 27.646 ms

6543 HEAD azjunk5 x[aeio]q 1292 Seq Scan 119.951 ms
6554 trgm_regex azjunk5 x[aeio]q 1292 Bitmap Heap Scan 3.881 ms

6543 HEAD azjunk5 x[aeio]{1}q 1292 Seq Scan 123.444 ms
6554 trgm_regex azjunk5 x[aeio]{1}q 1292 Bitmap Heap Scan 3.346 ms

6543 HEAD azjunk5 x[aeio]{1,1}q 1292 Seq Scan 124.024 ms
6554 trgm_regex azjunk5 x[aeio]{1,1}q 1292 Bitmap Heap Scan 3.681 ms

6543 HEAD azjunk5 x[aeio]{,2}q 0 Seq Scan 152.181 ms
6554 trgm_regex azjunk5 x[aeio]{,2}q 0 Bitmap Heap Scan 5.774 ms

6543 HEAD azjunk5 x[aeio]{,10}q 0 Seq Scan 214.168 ms
6554 trgm_regex azjunk5 x[aeio]{,10}q 0 Bitmap Heap Scan 12.074 ms

6543 HEAD azjunk5 x[aeio]{1,2}q 1441 Seq Scan 128.491 ms
6554 trgm_regex azjunk5 x[aeio]{1,2}q 1441 Bitmap Heap Scan 22.538 ms

6543 HEAD azjunk5 x[aeio]{1,3}q 1461 Seq Scan 132.987 ms
6554 trgm_regex azjunk5 x[aeio]{1,3}q 1461 Seq Scan 125.682 ms

6543 HEAD azjunk5 x[aeio]{1,4}q 1464 Seq Scan 132.729 ms
6554 trgm_regex azjunk5 x[aeio]{1,4}q 1464 Seq Scan 133.625 ms

6543 HEAD azjunk5 x[aeio]{2,4}q 175 Seq Scan 135.328 ms
6554 trgm_regex azjunk5 x[aeio]{2,4}q 175 Seq Scan 134.194 ms

6543 HEAD azjunk5 x[aeio]{3,4}q 23 Seq Scan 131.590 ms
6554 trgm_regex azjunk5 x[aeio]{3,4}q 23 Seq Scan 135.435 ms

6543 HEAD azjunk5 x[aeiou]q 1598 Seq Scan 124.063 ms
6554 trgm_regex azjunk5 x[aeiou]q 1598 Seq Scan 124.983 ms

6543 HEAD azjunk5 x[aeiou]{1}q 1598 Seq Scan 134.563 ms
6554 trgm_regex azjunk5 x[aeiou]{1}q 1598 Seq Scan 128.089 ms

6543 HEAD azjunk5 x[aeiou]{1,1}q 1598 Seq Scan 124.158 ms
6554 trgm_regex azjunk5 x[aeiou]{1,1}q 1598 Seq Scan 128.355 ms

6543 HEAD azjunk5 x[aeiou]{,2}q 0 Seq Scan 144.541 ms
6554 trgm_regex azjunk5 x[aeiou]{,2}q 0 Bitmap Heap Scan 2.369 ms

6543 HEAD azjunk5 x[aeiou]{,10}q 0 Seq Scan 208.091 ms
6554 trgm_regex azjunk5 x[aeiou]{,10}q 0 Bitmap Heap Scan 2.528 ms

6543 HEAD azjunk5 x[aeiou]{1,2}q 1838 Seq Scan 130.474 ms
6554 trgm_regex azjunk5 x[aeiou]{1,2}q 1838 Seq Scan 130.433 ms

6543 HEAD azjunk5 x[aeiou]{1,3}q 1886 Seq Scan 134.002 ms
6554 trgm_regex azjunk5 x[aeiou]{1,3}q 1886 Seq Scan 134.786 ms

6543 HEAD azjunk5 x[aeiou]{1,4}q 1892 Seq Scan 137.588 ms
6554 trgm_regex azjunk5 x[aeiou]{1,4}q 1892 Seq Scan 145.194 ms

6543 HEAD azjunk5 x[aeiou]{2,4}q 299 Seq Scan 136.125 ms
6554 trgm_regex azjunk5 x[aeiou]{2,4}q 299 Seq Scan 138.212 ms

6543 HEAD azjunk5 x[aeiou]{3,4}q 54 Seq Scan 135.205 ms
6554 trgm_regex azjunk5 x[aeiou]{3,4}q 54 Seq Scan 134.146 ms

6543 HEAD azjunk5 x[aeiou]{1,5}q 1895 Seq Scan 137.151 ms
6554 trgm_regex azjunk5 x[aeiou]{1,5}q 1895 Seq Scan 140.986 ms

6543 HEAD azjunk5 x[aeiou]{2,5}q 302 Seq Scan 142.189 ms
6554 trgm_regex azjunk5 x[aeiou]{2,5}q 302 Seq Scan 137.368 ms

6543 HEAD azjunk5 x[aeiou]{4,5}q 9 Seq Scan 138.165 ms
6554 trgm_regex azjunk5 x[aeiou]{4,5}q 9 Seq Scan 137.122 ms

6543 HEAD azjunk5 x[aeiouy]q 1913 Seq Scan 126.283 ms
6554 trgm_regex azjunk5 x[aeiouy]q 1913 Seq Scan 130.424 ms

6543 HEAD azjunk5 x[aeiouy]{1}q 1913 Seq Scan 125.947 ms
6554 trgm_regex azjunk5 x[aeiouy]{1}q 1913 Seq Scan 131.957 ms

6543 HEAD azjunk5 x[aeiouy]{1,1}q 1913 Seq Scan 126.529 ms
6554 trgm_regex azjunk5 x[aeiouy]{1,1}q 1913 Seq Scan 130.958 ms

6543 HEAD azjunk5 x[aeiouy]{,2}q 0 Seq Scan 147.704 ms
6554 trgm_regex azjunk5 x[aeiouy]{,2}q 0 Bitmap Heap Scan 2.331 ms

6543 HEAD azjunk5 x[aeiouy]{,10}q 0 Seq Scan 221.774 ms
6554 trgm_regex azjunk5 x[aeiouy]{,10}q 0 Bitmap Heap Scan 2.522 ms

6543 HEAD azjunk5 x[aeiouy]{1,2}q 2275 Seq Scan 134.044 ms
6554 trgm_regex azjunk5 x[aeiouy]{1,2}q 2275 Seq Scan 136.827 ms

6543 HEAD azjunk5 x[aeiouy]{1,3}q 2358 Seq Scan 135.599 ms
6554 trgm_regex azjunk5 x[aeiouy]{1,3}q 2358 Seq Scan 134.196 ms

6543 HEAD azjunk5 x[aeiouy]{1,4}q 2376 Seq Scan 138.685 ms
6554 trgm_regex azjunk5 x[aeiouy]{1,4}q 2376 Seq Scan 141.408 ms

6543 HEAD azjunk5 x[aeiouy]{2,4}q 474 Seq Scan 142.223 ms
6554 trgm_regex azjunk5 x[aeiouy]{2,4}q 474 Seq Scan 143.439 ms

6543 HEAD azjunk5 x[aeiouy]{3,4}q 103 Seq Scan 138.690 ms
6554 trgm_regex azjunk5 x[aeiouy]{3,4}q 103 Seq Scan 136.192 ms

6543 HEAD azjunk5 x[aeiouy]{1,5}q 2381 Seq Scan 140.836 ms
6554 trgm_regex azjunk5 x[aeiouy]{1,5}q 2381 Seq Scan 143.374 ms

6543 HEAD azjunk5 x[aeiouy]{2,5}q 479 Seq Scan 140.223 ms
6554 trgm_regex azjunk5 x[aeiouy]{2,5}q 479 Seq Scan 139.995 ms

6543 HEAD azjunk5 x[aeiouy]{4,5}q 23 Seq Scan 139.976 ms
6554 trgm_regex azjunk5 x[aeiouy]{4,5}q 23 Seq Scan 138.114 ms

6543 HEAD azjunk6 x[ae]q 6448 Seq Scan 1219.490 ms
6554 trgm_regex azjunk6 x[ae]q 6448 Bitmap Heap Scan 23.452 ms

6543 HEAD azjunk6 x[ae]{1}q 6448 Seq Scan 1153.371 ms
6554 trgm_regex azjunk6 x[ae]{1}q 6448 Bitmap Heap Scan 18.492 ms

6543 HEAD azjunk6 x[ae]{1,1}q 6448 Seq Scan 1189.951 ms
6554 trgm_regex azjunk6 x[ae]{1,1}q 6448 Bitmap Heap Scan 24.596 ms

6543 HEAD azjunk6 x[ae]{,2}q 0 Seq Scan 1423.474 ms
6554 trgm_regex azjunk6 x[ae]{,2}q 0 Bitmap Heap Scan 41.593 ms

6543 HEAD azjunk6 x[ae]{,10}q 0 Seq Scan 1957.142 ms
6554 trgm_regex azjunk6 x[ae]{,10}q 0 Bitmap Heap Scan 45.238 ms

6543 HEAD azjunk6 x[ae]{1,2}q 6886 Seq Scan 1253.761 ms
6554 trgm_regex azjunk6 x[ae]{1,2}q 6886 Bitmap Heap Scan 31.247 ms

6543 HEAD azjunk6 x[aei]q 9600 Seq Scan 1203.022 ms
6554 trgm_regex azjunk6 x[aei]q 9600 Bitmap Heap Scan 31.467 ms

6543 HEAD azjunk6 x[aei]{1}q 9600 Seq Scan 1213.834 ms
6554 trgm_regex azjunk6 x[aei]{1}q 9600 Bitmap Heap Scan 26.008 ms

6543 HEAD azjunk6 x[aei]{1,1}q 9600 Seq Scan 1244.158 ms
6554 trgm_regex azjunk6 x[aei]{1,1}q 9600 Bitmap Heap Scan 25.997 ms

6543 HEAD azjunk6 x[aei]{,2}q 0 Seq Scan 1432.935 ms
6554 trgm_regex azjunk6 x[aei]{,2}q 0 Bitmap Heap Scan 44.843 ms

6543 HEAD azjunk6 x[aei]{,10}q 0 Seq Scan 1940.611 ms
6554 trgm_regex azjunk6 x[aei]{,10}q 0 Bitmap Heap Scan 45.838 ms

6543 HEAD azjunk6 x[aei]{1,2}q 10604 Seq Scan 1235.913 ms
6554 trgm_regex azjunk6 x[aei]{1,2}q 10604 Bitmap Heap Scan 78.764 ms

6543 HEAD azjunk6 x[aei]{1,3}q 10704 Seq Scan 1244.960 ms
6554 trgm_regex azjunk6 x[aei]{1,3}q 10704 Bitmap Heap Scan 272.049 ms

6543 HEAD azjunk6 x[aei]q 9600 Seq Scan 1211.965 ms
6554 trgm_regex azjunk6 x[aei]q 9600 Bitmap Heap Scan 26.230 ms

6543 HEAD azjunk6 x[aei]{1}q 9600 Seq Scan 1218.431 ms
6554 trgm_regex azjunk6 x[aei]{1}q 9600 Bitmap Heap Scan 25.462 ms

6543 HEAD azjunk6 x[aei]{1,1}q 9600 Seq Scan 1250.050 ms
6554 trgm_regex azjunk6 x[aei]{1,1}q 9600 Bitmap Heap Scan 25.711 ms

6543 HEAD azjunk6 x[aei]{,2}q 0 Seq Scan 1457.725 ms
6554 trgm_regex azjunk6 x[aei]{,2}q 0 Bitmap Heap Scan 43.491 ms

6543 HEAD azjunk6 x[aei]{,10}q 0 Seq Scan 2034.895 ms
6554 trgm_regex azjunk6 x[aei]{,10}q 0 Bitmap Heap Scan 46.139 ms

6543 HEAD azjunk6 x[aei]{1,2}q 10604 Seq Scan 1250.820 ms
6554 trgm_regex azjunk6 x[aei]{1,2}q 10604 Bitmap Heap Scan 78.067 ms

6543 HEAD azjunk6 x[aei]{1,3}q 10704 Seq Scan 1265.146 ms
6554 trgm_regex azjunk6 x[aei]{1,3}q 10704 Bitmap Heap Scan 274.109 ms

6543 HEAD azjunk6 x[aeio]q 12784 Seq Scan 1235.647 ms
6554 trgm_regex azjunk6 x[aeio]q 12784 Bitmap Heap Scan 35.613 ms

6543 HEAD azjunk6 x[aeio]{1}q 12784 Seq Scan 1206.185 ms
6554 trgm_regex azjunk6 x[aeio]{1}q 12784 Bitmap Heap Scan 39.618 ms

6543 HEAD azjunk6 x[aeio]{1,1}q 12784 Seq Scan 1210.467 ms
6554 trgm_regex azjunk6 x[aeio]{1,1}q 12784 Bitmap Heap Scan 34.513 ms

6543 HEAD azjunk6 x[aeio]{,2}q 0 Seq Scan 1457.918 ms
6554 trgm_regex azjunk6 x[aeio]{,2}q 0 Bitmap Heap Scan 55.732 ms

6543 HEAD azjunk6 x[aeio]{,10}q 0 Seq Scan 2104.860 ms
6554 trgm_regex azjunk6 x[aeio]{,10}q 0 Bitmap Heap Scan 62.129 ms

6543 HEAD azjunk6 x[aeio]{1,2}q 14538 Seq Scan 1286.881 ms
6554 trgm_regex azjunk6 x[aeio]{1,2}q 14538 Bitmap Heap Scan 182.161 ms

6543 HEAD azjunk6 x[aeio]{1,3}q 14761 Seq Scan 1291.199 ms
6554 trgm_regex azjunk6 x[aeio]{1,3}q 14761 Bitmap Heap Scan 1445.593 ms

6543 HEAD azjunk6 x[aeio]{1,4}q 14791 Seq Scan 1331.960 ms
6554 trgm_regex azjunk6 x[aeio]{1,4}q 14791 Seq Scan 1340.845 ms

6543 HEAD azjunk6 x[aeio]{2,4}q 2024 Seq Scan 1337.631 ms
6554 trgm_regex azjunk6 x[aeio]{2,4}q 2024 Seq Scan 1354.844 ms

6543 HEAD azjunk6 x[aeio]{3,4}q 257 Seq Scan 1321.271 ms
6554 trgm_regex azjunk6 x[aeio]{3,4}q 257 Seq Scan 1335.737 ms

6543 HEAD azjunk6 x[aeiou]q 15976 Seq Scan 1237.313 ms
6554 trgm_regex azjunk6 x[aeiou]q 15976 Seq Scan 1268.531 ms

6543 HEAD azjunk6 x[aeiou]{1}q 15976 Seq Scan 1251.777 ms
6554 trgm_regex azjunk6 x[aeiou]{1}q 15976 Seq Scan 1268.431 ms

6543 HEAD azjunk6 x[aeiou]{1,1}q 15976 Seq Scan 1243.416 ms
6554 trgm_regex azjunk6 x[aeiou]{1,1}q 15976 Seq Scan 1263.152 ms

6543 HEAD azjunk6 x[aeiou]{,2}q 0 Seq Scan 1476.587 ms
6554 trgm_regex azjunk6 x[aeiou]{,2}q 0 Bitmap Heap Scan 19.583 ms

6543 HEAD azjunk6 x[aeiou]{,10}q 0 Seq Scan 2084.845 ms
6554 trgm_regex azjunk6 x[aeiou]{,10}q 0 Bitmap Heap Scan 21.377 ms

6543 HEAD azjunk6 x[aeiou]{1,2}q 18692 Seq Scan 1302.585 ms
6554 trgm_regex azjunk6 x[aeiou]{1,2}q 18692 Seq Scan 1330.683 ms

6543 HEAD azjunk6 x[aeiou]{1,3}q 19128 Seq Scan 1290.309 ms
6554 trgm_regex azjunk6 x[aeiou]{1,3}q 19128 Seq Scan 1317.831 ms

6543 HEAD azjunk6 x[aeiou]{1,4}q 19202 Seq Scan 1347.727 ms
6554 trgm_regex azjunk6 x[aeiou]{1,4}q 19202 Seq Scan 1361.307 ms

6543 HEAD azjunk6 x[aeiou]{2,4}q 3268 Seq Scan 1362.704 ms
6554 trgm_regex azjunk6 x[aeiou]{2,4}q 3268 Seq Scan 1372.468 ms

6543 HEAD azjunk6 x[aeiou]{3,4}q 523 Seq Scan 1321.774 ms
6554 trgm_regex azjunk6 x[aeiou]{3,4}q 523 Seq Scan 1346.200 ms

6543 HEAD azjunk6 x[aeiou]{1,5}q 19214 Seq Scan 1367.949 ms
6554 trgm_regex azjunk6 x[aeiou]{1,5}q 19214 Seq Scan 1428.444 ms

6543 HEAD azjunk6 x[aeiou]{2,5}q 3280 Seq Scan 1349.375 ms
6554 trgm_regex azjunk6 x[aeiou]{2,5}q 3280 Seq Scan 1375.887 ms

6543 HEAD azjunk6 x[aeiou]{4,5}q 88 Seq Scan 1324.008 ms
6554 trgm_regex azjunk6 x[aeiou]{4,5}q 88 Seq Scan 1394.067 ms

6543 HEAD azjunk6 x[aeiouy]q 19168 Seq Scan 1262.363 ms
6554 trgm_regex azjunk6 x[aeiouy]q 19168 Seq Scan 1248.167 ms

6543 HEAD azjunk6 x[aeiouy]{1}q 19168 Seq Scan 1257.760 ms
6554 trgm_regex azjunk6 x[aeiouy]{1}q 19168 Seq Scan 1276.502 ms

6543 HEAD azjunk6 x[aeiouy]{1,1}q 19168 Seq Scan 1282.770 ms
6554 trgm_regex azjunk6 x[aeiouy]{1,1}q 19168 Seq Scan 1284.173 ms

6543 HEAD azjunk6 x[aeiouy]{,2}q 0 Seq Scan 1483.940 ms
6554 trgm_regex azjunk6 x[aeiouy]{,2}q 0 Bitmap Heap Scan 20.634 ms

6543 HEAD azjunk6 x[aeiouy]{,10}q 0 Seq Scan 2058.701 ms
6554 trgm_regex azjunk6 x[aeiouy]{,10}q 0 Bitmap Heap Scan 21.596 ms

6543 HEAD azjunk6 x[aeiouy]{1,2}q 23069 Seq Scan 1340.593 ms
6554 trgm_regex azjunk6 x[aeiouy]{1,2}q 23069 Seq Scan 1322.919 ms

6543 HEAD azjunk6 x[aeiouy]{1,3}q 23844 Seq Scan 1321.853 ms
6554 trgm_regex azjunk6 x[aeiouy]{1,3}q 23844 Seq Scan 1333.974 ms

6543 HEAD azjunk6 x[aeiouy]{1,4}q 23993 Seq Scan 1377.787 ms
6554 trgm_regex azjunk6 x[aeiouy]{1,4}q 23993 Seq Scan 1389.073 ms

6543 HEAD azjunk6 x[aeiouy]{2,4}q 4903 Seq Scan 1392.936 ms
6554 trgm_regex azjunk6 x[aeiouy]{2,4}q 4903 Seq Scan 1399.154 ms

6543 HEAD azjunk6 x[aeiouy]{3,4}q 944 Seq Scan 1342.379 ms
6554 trgm_regex azjunk6 x[aeiouy]{3,4}q 944 Seq Scan 1375.420 ms

6543 HEAD azjunk6 x[aeiouy]{1,5}q 24028 Seq Scan 1402.588 ms
6554 trgm_regex azjunk6 x[aeiouy]{1,5}q 24028 Seq Scan 1482.936 ms

6543 HEAD azjunk6 x[aeiouy]{2,5}q 4938 Seq Scan 1378.311 ms
6554 trgm_regex azjunk6 x[aeiouy]{2,5}q 4938 Seq Scan 1402.020 ms

6543 HEAD azjunk6 x[aeiouy]{4,5}q 189 Seq Scan 1348.171 ms
6554 trgm_regex azjunk6 x[aeiouy]{4,5}q 189 Seq Scan 1392.002 ms

6543 HEAD azjunk7 x[ae]q 63781 Seq Scan 11722.978 ms
6554 trgm_regex azjunk7 x[ae]q 63781 Bitmap Heap Scan 418.407 ms

6543 HEAD azjunk7 x[ae]{1}q 63781 Seq Scan 11787.311 ms
6554 trgm_regex azjunk7 x[ae]{1}q 63781 Bitmap Heap Scan 423.027 ms

6543 HEAD azjunk7 x[ae]{1,1}q 63781 Seq Scan 11902.061 ms
6554 trgm_regex azjunk7 x[ae]{1,1}q 63781 Bitmap Heap Scan 420.819 ms

6543 HEAD azjunk7 x[ae]{,2}q 0 Seq Scan 14144.148 ms
6554 trgm_regex azjunk7 x[ae]{,2}q 0 Bitmap Heap Scan 343.806 ms

6543 HEAD azjunk7 x[ae]{,10}q 0 Seq Scan 20390.872 ms
6554 trgm_regex azjunk7 x[ae]{,10}q 0 Bitmap Heap Scan 370.856 ms

6543 HEAD azjunk7 x[ae]{1,2}q 68145 Seq Scan 12569.198 ms
6554 trgm_regex azjunk7 x[ae]{1,2}q 68145 Bitmap Heap Scan 571.570 ms

6543 HEAD azjunk7 x[aei]q 95281 Seq Scan 12027.646 ms
6554 trgm_regex azjunk7 x[aei]q 95281 Bitmap Heap Scan 579.807 ms

6543 HEAD azjunk7 x[aei]{1}q 95281 Seq Scan 12213.674 ms
6554 trgm_regex azjunk7 x[aei]{1}q 95281 Bitmap Heap Scan 581.085 ms

6543 HEAD azjunk7 x[aei]{1,1}q 95281 Seq Scan 12121.898 ms
6554 trgm_regex azjunk7 x[aei]{1,1}q 95281 Bitmap Heap Scan 587.568 ms

6543 HEAD azjunk7 x[aei]{,2}q 0 Seq Scan 14519.020 ms
6554 trgm_regex azjunk7 x[aei]{,2}q 0 Bitmap Heap Scan 440.596 ms

6543 HEAD azjunk7 x[aei]{,10}q 0 Seq Scan 20829.970 ms
6554 trgm_regex azjunk7 x[aei]{,10}q 0 Bitmap Heap Scan 443.136 ms

6543 HEAD azjunk7 x[aei]{1,2}q 105054 Seq Scan 12967.634 ms
6554 trgm_regex azjunk7 x[aei]{1,2}q 105054 Bitmap Heap Scan 1151.202 ms

6543 HEAD azjunk7 x[aei]{1,3}q 106031 Seq Scan 12601.485 ms
6554 trgm_regex azjunk7 x[aei]{1,3}q 106031 Bitmap Heap Scan 3084.092 ms

6543 HEAD azjunk7 x[aei]q 95281 Seq Scan 12251.805 ms
6554 trgm_regex azjunk7 x[aei]q 95281 Bitmap Heap Scan 579.398 ms

6543 HEAD azjunk7 x[aei]{1}q 95281 Seq Scan 12251.196 ms
6554 trgm_regex azjunk7 x[aei]{1}q 95281 Bitmap Heap Scan 579.351 ms

6543 HEAD azjunk7 x[aei]{1,1}q 95281 Seq Scan 12176.216 ms
6554 trgm_regex azjunk7 x[aei]{1,1}q 95281 Bitmap Heap Scan 577.931 ms

6543 HEAD azjunk7 x[aei]{,2}q 0 Seq Scan 14632.855 ms
6554 trgm_regex azjunk7 x[aei]{,2}q 0 Bitmap Heap Scan 434.758 ms

6543 HEAD azjunk7 x[aei]{,10}q 0 Seq Scan 20637.829 ms
6554 trgm_regex azjunk7 x[aei]{,10}q 0 Bitmap Heap Scan 440.237 ms

6543 HEAD azjunk7 x[aei]{1,2}q 105054 Seq Scan 12967.108 ms
6554 trgm_regex azjunk7 x[aei]{1,2}q 105054 Bitmap Heap Scan 1166.260 ms

6543 HEAD azjunk7 x[aei]{1,3}q 106031 Seq Scan 12820.629 ms
6554 trgm_regex azjunk7 x[aei]{1,3}q 106031 Bitmap Heap Scan 3079.662 ms

6543 HEAD azjunk7 x[aeio]q 126868 Seq Scan 12535.441 ms
6554 trgm_regex azjunk7 x[aeio]q 126868 Bitmap Heap Scan 737.634 ms

6543 HEAD azjunk7 x[aeio]{1}q 126868 Seq Scan 12338.188 ms
6554 trgm_regex azjunk7 x[aeio]{1}q 126868 Bitmap Heap Scan 749.844 ms

6543 HEAD azjunk7 x[aeio]{1,1}q 126868 Seq Scan 12579.271 ms
6554 trgm_regex azjunk7 x[aeio]{1,1}q 126868 Bitmap Heap Scan 731.667 ms

6543 HEAD azjunk7 x[aeio]{,2}q 0 Seq Scan 14806.573 ms
6554 trgm_regex azjunk7 x[aeio]{,2}q 0 Bitmap Heap Scan 555.302 ms

6543 HEAD azjunk7 x[aeio]{,10}q 0 Seq Scan 22000.135 ms
6554 trgm_regex azjunk7 x[aeio]{,10}q 0 Bitmap Heap Scan 560.526 ms

6543 HEAD azjunk7 x[aeio]{1,2}q 144180 Seq Scan 12919.840 ms
6554 trgm_regex azjunk7 x[aeio]{1,2}q 144180 Bitmap Heap Scan 2245.885 ms

6543 HEAD azjunk7 x[aeio]{1,3}q 146526 Seq Scan 12807.513 ms
6554 trgm_regex azjunk7 x[aeio]{1,3}q 146526 Bitmap Heap Scan 15261.582 ms

6543 HEAD azjunk7 x[aeio]{1,4}q 146834 Seq Scan 13179.285 ms
6554 trgm_regex azjunk7 x[aeio]{1,4}q 146834 Seq Scan 13874.164 ms

6543 HEAD azjunk7 x[aeio]{2,4}q 20220 Seq Scan 13365.779 ms
6554 trgm_regex azjunk7 x[aeio]{2,4}q 20220 Seq Scan 13544.404 ms

6543 HEAD azjunk7 x[aeio]{3,4}q 2697 Seq Scan 13224.408 ms
6554 trgm_regex azjunk7 x[aeio]{3,4}q 2697 Seq Scan 13699.898 ms

6543 HEAD azjunk7 x[aeiou]q 158778 Seq Scan 12753.739 ms
6554 trgm_regex azjunk7 x[aeiou]q 158778 Seq Scan 12736.813 ms

6543 HEAD azjunk7 x[aeiou]{1}q 158778 Seq Scan 12385.108 ms
6554 trgm_regex azjunk7 x[aeiou]{1}q 158778 Seq Scan 12852.739 ms

6543 HEAD azjunk7 x[aeiou]{1,1}q 158778 Seq Scan 12665.614 ms
6554 trgm_regex azjunk7 x[aeiou]{1,1}q 158778 Seq Scan 12482.476 ms

6543 HEAD azjunk7 x[aeiou]{,2}q 0 Seq Scan 14886.647 ms
6554 trgm_regex azjunk7 x[aeiou]{,2}q 0 Bitmap Heap Scan 197.807 ms

6543 HEAD azjunk7 x[aeiou]{,10}q 0 Seq Scan 21428.416 ms
6554 trgm_regex azjunk7 x[aeiou]{,10}q 0 Bitmap Heap Scan 210.265 ms

6543 HEAD azjunk7 x[aeiou]{1,2}q 185669 Seq Scan 12896.338 ms
6554 trgm_regex azjunk7 x[aeiou]{1,2}q 185669 Seq Scan 13354.702 ms

6543 HEAD azjunk7 x[aeiou]{1,3}q 190274 Seq Scan 12730.517 ms
6554 trgm_regex azjunk7 x[aeiou]{1,3}q 190274 Seq Scan 13026.644 ms

6543 HEAD azjunk7 x[aeiou]{1,4}q 191017 Seq Scan 13664.473 ms
6554 trgm_regex azjunk7 x[aeiou]{1,4}q 191017 Seq Scan 13743.875 ms

6543 HEAD azjunk7 x[aeiou]{2,4}q 32732 Seq Scan 13360.429 ms
6554 trgm_regex azjunk7 x[aeiou]{2,4}q 32732 Seq Scan 13804.770 ms

6543 HEAD azjunk7 x[aeiou]{3,4}q 5449 Seq Scan 13170.928 ms
6554 trgm_regex azjunk7 x[aeiou]{3,4}q 5449 Seq Scan 13394.707 ms

6543 HEAD azjunk7 x[aeiou]{1,5}q 191160 Seq Scan 13591.866 ms
6554 trgm_regex azjunk7 x[aeiou]{1,5}q 191160 Seq Scan 14158.325 ms

6543 HEAD azjunk7 x[aeiou]{2,5}q 32878 Seq Scan 13507.736 ms
6554 trgm_regex azjunk7 x[aeiou]{2,5}q 32878 Seq Scan 13687.159 ms

6543 HEAD azjunk7 x[aeiou]{4,5}q 903 Seq Scan 13329.291 ms
6554 trgm_regex azjunk7 x[aeiou]{4,5}q 903 Seq Scan 13645.331 ms

6543 HEAD azjunk7 x[aeiouy]q 190245 Seq Scan 12331.375 ms
6554 trgm_regex azjunk7 x[aeiouy]q 190245 Seq Scan 12726.390 ms

6543 HEAD azjunk7 x[aeiouy]{1}q 190245 Seq Scan 12752.629 ms
6554 trgm_regex azjunk7 x[aeiouy]{1}q 190245 Seq Scan 12712.805 ms

6543 HEAD azjunk7 x[aeiouy]{1,1}q 190245 Seq Scan 12500.269 ms
6554 trgm_regex azjunk7 x[aeiouy]{1,1}q 190245 Seq Scan 12863.557 ms

6543 HEAD azjunk7 x[aeiouy]{,2}q 0 Seq Scan 14746.988 ms
6554 trgm_regex azjunk7 x[aeiouy]{,2}q 0 Bitmap Heap Scan 194.024 ms

6543 HEAD azjunk7 x[aeiouy]{,10}q 0 Seq Scan 21648.192 ms
6554 trgm_regex azjunk7 x[aeiouy]{,10}q 0 Bitmap Heap Scan 208.955 ms

6543 HEAD azjunk7 x[aeiouy]{1,2}q 228677 Seq Scan 13359.817 ms
6554 trgm_regex azjunk7 x[aeiouy]{1,2}q 228677 Seq Scan 13358.769 ms

6543 HEAD azjunk7 x[aeiouy]{1,3}q 236512 Seq Scan 13191.587 ms
6554 trgm_regex azjunk7 x[aeiouy]{1,3}q 236512 Seq Scan 13504.745 ms

6543 HEAD azjunk7 x[aeiouy]{1,4}q 238061 Seq Scan 13756.733 ms
6554 trgm_regex azjunk7 x[aeiouy]{1,4}q 238061 Seq Scan 13929.557 ms

6543 HEAD azjunk7 x[aeiouy]{2,4}q 48681 Seq Scan 13766.984 ms
6554 trgm_regex azjunk7 x[aeiouy]{2,4}q 48681 Seq Scan 14135.231 ms

6543 HEAD azjunk7 x[aeiouy]{3,4}q 9602 Seq Scan 13429.259 ms
6554 trgm_regex azjunk7 x[aeiouy]{3,4}q 9602 Seq Scan 13539.163 ms

6543 HEAD azjunk7 x[aeiouy]{1,5}q 238407 Seq Scan 13863.009 ms
6554 trgm_regex azjunk7 x[aeiouy]{1,5}q 238407 Seq Scan 14091.161 ms

6543 HEAD azjunk7 x[aeiouy]{2,5}q 49031 Seq Scan 14006.522 ms
6554 trgm_regex azjunk7 x[aeiouy]{2,5}q 49031 Seq Scan 14105.039 ms

6543 HEAD azjunk7 x[aeiouy]{4,5}q 1935 Seq Scan 13718.130 ms
6554 trgm_regex azjunk7 x[aeiouy]{4,5}q 1935 Seq Scan 14032.751 ms

(You asked also for testing against real text, I'll probably some of that too (although I do not
expect all that many differences).

Thanks, great work!

Erik Rijkers