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How to search multiple columns in PostgreSQL full text?
It looks like what you want is, in fact to search the concatenation of all those fields. create index your_index on shop using GIN (to_tsvector (‘italian’,name||’ ‘||coalesce (decription,”)…)) Don’t forget to use coalesce on columns accepting NULL values. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question.
How to search for answers in SQL PostgreSQL?
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What is the purpose of full text search?
General idea of Full-Text Search is to provide more functionality for naitive language searches. it allows using stop words (words, that do not contribute to subject of the search), search for synonims, specify distance between words etc. To accomplish, what you need a procedure with several unions is enough.
Can you do full text search in two columns?
A typical full text search would concatenate job_title and company_name, then return search text result according to a single ranking. However, treating text match in two columns equally can be problematic in my case. For example, Search Engineer at Google Co. should not be ranked equally with Google Search at Engineer Co.
How to use phrase search in PostgreSQL 9.6?
<-> is the phrase search operator and requires Postgres 9.6. How to store short stories for access to individual sentences? And if you want to ignore diacritical signs as well ( ‘ä’ <> ‘a’ ), add unaccent () to the mix. You can use it as separate function or you can add it as dictionary to your text search configuration.
Why are many columns in PostgreSQL immutable?
That’s because concat_ws () is only STABLE not IMMUTABLE. You need to create it first: It can be used as drop-in replacement for concat_ws (), except that it only accepts actual text data as input (which allows us to make it IMMUTABLE without cheating, effectively). Detailed explanation (read it!): For many columns, this is shorter and faster.