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Dear all, I am facing a problem while creating the index to make the below query run faster. My table size is near about 1065 MB and 428467 rows. explain analyze select count(*) from page_content where publishing_date like '%2010%' and content_language='en' and content is not null and isprocessable = 1 and (content like '%Militant%' OR content like '%jihad%' OR content like '%Mujahid%' OR content like '%fedayeen%' OR content like '%insurgent%' OR content like '%terrorist%' OR content like '%cadre%' OR content like '%civilians%' OR content like '%police%' OR content like '%defence%' OR content like '%cops%' OR content like '%crpf%' OR content like '%dsf%' OR content like '%ssb%') AND (content like '%kill%' or content like '%injure%'); Output: Aggregate (cost=107557.78..107557.79 rows=1 width=0) (actual time=18564.631..18564.631 rows=1 loops=1) -> Seq Scan on page_content (cost=0.00..107466.82 rows=36381 width=0) (actual time=0.146..18529.371 rows=59918 loops=1) Filter: ((content IS NOT NULL) AND (publishing_date ~~ '%2010%'::text) AND (content_language = 'en'::bpchar) AND (isprocessable = 1) AND (((content) ::text ~~ '%kill%'::text) OR ((content)::text ~~ '%injure%'::text)) AND (((content)::text ~~ '%Militant%'::text) OR ((content)::text ~~ '%jihad%'::text) OR ( (content)::text ~~ '%Mujahid%'::text) OR ((content)::text ~~ '%fedayeen%'::text) OR ((content)::text ~~ '%insurgent%'::text) OR ((content)::text ~~ '%terrori st%'::text) OR ((content)::text ~~ '%cadre%'::text) OR ((content)::text ~~ '%civilians%'::text) OR ((content)::text ~~ '%police%'::text) OR ((content)::text ~~ '%defence%'::text) OR ((content)::text ~~ '%cops%'::text) OR ((content)::text ~~ '%crpf%'::text) OR ((content)::text ~~ '%dsf%'::text) OR ((content)::text ~~ '%ssb%'::text))) Total runtime: 18564.673 ms Index on that Table : CREATE INDEX idx_page_id ON page_content USING btree (crawled_page_id); Index I create : CREATE INDEX idx_page_id_content ON page_content USING btree (crawled_page_id,content_language,publishing_date,isprocessable); Index that fail to create: CREATE INDEX idx_page_id_content1 ON page_content USING btree (crawled_page_id,content); Error :-ERROR: index row requires 13240 bytes, maximum size is 8191 ********** Error ********** ERROR: index row requires 13240 bytes, maximum size is 8191 SQL state: 54000 How to resolve this error Please give any suggestion to tune the query. Thanks & best Regards, Adarsh Sharma |
