Hello,
Documentation says : (
http://www.postgresql.org/docs/9.5/static/textsearch-controls.html#TEXTSEARCH-RANKING
)
"The built-in ranking functions are only examples. You can write your own
ranking functions and/or combine their results with additional factors to
fit your specific needs."
The build-in seems not enough for my use case. How to write my own ranking
functions ?
I would like to create something like ts_rank_cd( tsv, 'foo & bar', my_new_
normalization_integer)
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pg 9.5