postgresql创建简单搜索视图

--创建search_company
CREATE MATERIALIZED VIEW search_company AS SELECT DISTINCT a.company_id,
a.ticker,
a.company_status_id,
a.company_name_cn,
a.company_name_en,
a.company_shortname_cn,
a.company_shortname_en,
b.brand_name,
a.year_founded,
c.name_cn AS company_status_name_cn,
c.name_en AS company_status_name_en
FROM ((company_profile a
LEFT JOIN brand_info b ON (((a.company_id)::text = (b.company_id)::text)))
LEFT JOIN config.dictionary c ON (((a.company_status_id)::text = (c.id)::text)))
WHERE a.company_status_id!='3.3'
ORDER BY a.ticker;

--导入自定义函数(扩展包)
CREATE EXTENSION zhparser;
CREATE TEXT SEARCH CONFIGURATION zhcfg (PARSER = zhparser);
ALTER TEXT SEARCH CONFIGURATION zhcfg ADD MAPPING FOR n,v,a,i,e,l WITH simple;
create extension pg_trgm;
create or replace function record_to_text(anyelement) returns text as $$
select $1::text;
$$ language sql strict immutable;

--创建全文索引
create index idx_search_company_gist on search_company using gist (record_to_text(search_company) gist_trgm_ops);
create index idx_search_company_gin on search_company using gin (record_to_text(search_company) gin_trgm_ops);

--检测索引是否正常
/*+ BitmapScan(search_company idx_search_company_gin) */ select * from search_company where record_to_text(search_company) ~ '经纬' and company_status_id like'3%' limit 99;

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