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int FROM generate_series(1,10) AS t(x); CREATE TEMP TABLE bar AS SELECT chr(x+72) AS name, x::int FROM generate_series(1,5) AS t(x); I think this would be easily do-able with a CROSSTAB capable of a dynamic … tables are of undefined length, Then the cross-join represents a cube of undefined dimension (because of above), The catagory-names (cross-tab parlance) are in the table What's the best we can do in PostgreSQL …

Unknown return type, dynamic SQL Column names and types cannot be dynamic. SQL demands to know number, names and types of resulting columns at call time. … Related: PostgreSQL convert columns to rows? Transpose? Dynamic alternative to pivot with CASE and GROUP BY …

Read this first if you are not familiar: PostgreSQL Crosstab Query Step 2a: Generate query SELECT format( $s$SELECT * FROM crosstab( $$SELECT h.id, kv.* FROM hstore_test h, each(hstore_col … Related: Dynamic alternative to pivot with CASE and GROUP BY Step 2b: Execute query This generates a query of the form: SELECT * FROM crosstab( $$SELECT h.id, kv.* FROM hstore_test h …

Unfortunately PostgreSQL doesn't provide nice tools to do that, so without getting into dynamic SQL generation in PL/PgSQL, we can at least do: SELECT player_id, seasonday, 'points' AS scoretype, points …

DISTINCT column2) AS column2, count(DISTINCT column3) AS column3, count(DISTINCT column4) AS column4 FROM ecarroll.public.foo; Which is pretty much what you want, except you need to pivot … to generate dynamic SQL to do the count() wrap that with more dynamic sql to do the pivot. …

Basically it's a crosstab query: PostgreSQL Crosstab Query The dynamic result type is a problem, though. ... is it possible to create a dynamic query which will output the right thing regardless … I have answered similar questions on SO before: Dynamic alternative to pivot with CASE and GROUP BY Refactor a PL/pgSQL function to return the output of various SELECT queries …

See: Table name as a PostgreSQL function parameter Simple dynamic solution The difficulty is to return varying row types. SQL demands to know the return type at call time. … in this case): Dynamic alternative to pivot with CASE and GROUP BY …

You need some aggregation of your data, and a pivot table. … argument of CROSSTAB can be something like $$ WITH n(ow) AS (VALUES(DATE_TRUNC('day', NOW()))) SELECT GENERATE_SERIES(n.ow + '-2 days', n.ow, '1 day') FROM n $$ and the query would always return a dynamic …

First of all you will need to install the tablefunc extension using the create extension tablefunc; command, otherwise the pivot function crosstab will not work. … A more dynamic version of the above (although not perfect by any means): create or replace function get_dynamic_transpose() returns text language plpgsql as $$ declare v_output_columns text; begin …

B')::int as "B" ,bool_or(group_name='C')::int as "C" ,bool_or(group_name='Z')::int as "Z" FROM group_membership GROUP BY member ORDER BY member; Postgres isn't structured to make dynamic … pivot tables easy. …

There are some ways to avoid that: generate the query that pivots all columns with dynamic SQL. … With a client-side pivot (psql) A client-side, psql-only solution is more straightforward with \crosstabview (psql 9.6+). …

Following on from my previous question: Creating crosstab() pivot table in PostgreSQL 9.0 I managed to create a pivot table for ageband using the crosstab() function. … If this can be done then I can create dynamic views on different factors using one geometry-less table and unit_postcode. …

Given a time series of events where each event has a successful or unsuccessful outcome, how do I pivot the ratio of events by entity and time period columns with an aggregate array cell value? … [0 0 0] ... | +-----------------------------------------------+ To keep things simple, this report will never need more than 10 date window columns and I can dynamically template the SQL pivot …

generate the crosstab query with another query execute the crosstab query Or the problem must be changed to accept results embedded in a JSON column fed with json_object_agg (as illustrated in Static and dynamic … Dynamic alternative to pivot with CASE and GROUP BY provides quite a bit to read and pointers to other Q/As. …

rdbms=postgres_11&fiddle=407a37686238bb3fbcbc4285d1705871 Unfortunately it turns out using a Pivot/CrossTab is much more complex than dynamically generating the original query with code: SELECT employeeid …