Postgresql string contains substring how to#
Postgresql string contains substring manual#

(Vote for please, I'm just illustrating how to clearly explain - I hope - what you want to achieve, sample data, etc). Substring functions let you extract one string from another string. WHERE string_a LIKE ANY (SELECT '%'||candidate_str||'%' FROM tableB) If so, shamelessly stealing excellent suggestion, you would use: SELECT string_a bork doesn't match any substring so it is not found. There is no need to show the substring(s) that matched.

Postgresql string contains substring manual#

I want the result set: the manual is greatīecause the manual is great has man and great in it and because chicken chicken chicken has chicken in it. 2) string The string argument is the string for which the substring is searched. ('the manual is great'), ('Chicken chicken chicken'), ('bork') The string concatenation operator () will accept non-string input, so long as at least one input is of string type, as shown in Table 9.9.For other cases, inserting an explicit coercion to text can be used to have non-string input accepted. 1) substring The substring argument is the string that you want to locate. Given: CREATE TABLE tableA (string_a text) Sn is a substring of Sa.Ī simple example to show what I mean (hint, hint): Sn from table B to find out if any of the other strings in S1. I'm going to take a wild stab in the dark and assume you mean that you want to match a string Sa from table A against one or more other strings S1. from table1 t WHERE exists (select from unnest (t.x) as u (element) where u. The PostgreSQL substring function is used to extract a string containing a specific number of characters from a particular position of a given string. How to find substring using results of subquery?ĬONSTRAINT uchastki_pkey PRIMARY KEY (fid),ĬONSTRAINT enforce_dims_the_geom CHECK (st_ndims(the_geom) = 2) 51 1 7 can you post the script you've tried Philippe at 14:17 Add a comment 2 Answers Sorted by: 1 I think your only option is an EXISTS condition: Select t. I have a table and i want to find a string in one row (character varying datatype) of this table using substring (character varying datatype) returned by subquery: SELECT uchastki.kadnumīut get a error ERROR: more than one row returned by a subquery used as an expression