@@ -12,24 +12,26 @@ create or replace function public.ts_replace(
1212 cost 1
1313as
1414$function$
15- 16- with s as (
17- select case when lexeme = str_from then str_to else lexeme end as new_lexeme,
18- unnest(positions) as position,
19- unnest(weights) as weight
20- from unnest(vector) as t(lexeme, positions, weights)
21- )
22- -- https://www.postgrespro.ru/docs/postgresql/12/datatype-textsearch#DATATYPE-TSVECTOR
23- select array_to_string(array(
24- select concat(
25- concat($$' $,ドル replace(replace(new_lexeme, $$' ' ' ' $$),
26- ' :' ,
27- string_agg(concat(position, weight), ' ,' )
28- )
29- from s
30- group by new_lexeme
31- ), ' ' )::tsvector;
32-
15+ with s as (
16+ select case when lexeme = str_from then str_to
17+ else lexeme
18+ end as new_lexeme,
19+ unnest(positions) as position,
20+ unnest(weights) as weight
21+ from unnest(vector) as t(lexeme, positions, weights)
22+ )
23+ -- https://www.postgrespro.ru/docs/postgresql/12/datatype-textsearch#DATATYPE-TSVECTOR
24+ select array_to_string(array(
25+ select concat(
26+ concat($$' $,ドル
27+ replace(replace(new_lexeme, $$' $,ドル $$' '
28+ $$' $$),
29+ ' :' ,
30+ string_agg(concat(position, weight), ' ,' )
31+ )
32+ from s
33+ group by new_lexeme
34+ ), ' ' )::tsvector;
3335$function$;
3436
3537comment on function public.ts_replace(vector tsvector, str_from text, str_to text) is ' Заменяет заданную лексему в векторе' ;
@@ -59,31 +61,45 @@ create or replace function public.ts_replace(
5961)
6062 returns tsvector
6163 stable
62- returns null on null input
63- parallel safe
64- language sql
64+ strict -- returns null if any parameter is null
65+ parallel safe -- Postgres 10 or later
66+ language plpgsql
6567 set search_path = ' '
6668 cost 1
6769as
6870$function$
71+ begin
72+ -- speed improves for empty input arrays
73+ if cardinality(arr_from) = 0 or
74+ cardinality(arr_to) = 0
75+ then
76+ return vector;
77+ end if;
6978
70- with s as (
71- select coalesce(arr_to[array_position(arr_from, lexeme)], lexeme) as new_lexeme,
72- unnest(positions) as position,
73- unnest(weights) as weight
74- from unnest(vector) as t(lexeme, positions, weights)
75- )
76- --https://www.postgrespro.ru/docs/postgresql/12/datatype-textsearch#DATATYPE-TSVECTOR
77- select array_to_string(array(
78- select concat(
79- concat($$' $,ドル replace(replace(new_lexeme, $$' $,ドル $$' ' $$), $$\$ ,ドル $$\\ $$), $$'
80- ' :'
81- string_agg(concat(position, weight), ' ,'
82- )
83- from s
84- group by new_lexeme
85- ), ' '
86- 79+ return (
80+ with s as (
81+ select coalesce(
82+ arr_to[array_position(arr_from, lexeme)],
83+ lexeme
84+ ) as new_lexeme,
85+ unnest(positions) as position,
86+ unnest(weights) as weight
87+ from unnest(vector) as t(lexeme, positions, weights)
88+ )
89+ --https://www.postgrespro.ru/docs/postgresql/12/datatype-textsearch#DATATYPE-TSVECTOR
90+ select array_to_string(array(
91+ select concat(
92+ concat($$' $,ドル
93+ replace(replace(new_lexeme, $$' $,ドル $$' ' $$), $$\$ ,ドル $$\\ $$),
94+ $$' $$),
95+ ' :'
96+ string_agg(concat(position, weight), ' ,'
97+ )
98+ from s
99+ group by new_lexeme
100+ ), ' '
101+ );
102+ end;
87103$function$;
88104
89105comment on function public.ts_replace(vector tsvector, arr_from text[], arr_to text[]) is ' Заменяет заданные лексемы в векторе'
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