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Category: Postgresql

How to make unique check without creating heavy index in postgres

By adminPosted on January 28, 2023

Question : I need to implement unique check for INSERT and UPDATE operations, but I would prefer to avoid creating […]

Query result with X rows discarded

By adminPosted on January 28, 2023

Question : In a transaction, if I select results to display to the screen, I get the message Query result […]

Is there a better way to add failed node back to postgres cluster?

By adminPosted on January 28, 2023

Question : There are 2 nodes in the cluster: node1(primary) and node2(replica). I will shutdown node1 and promote node2 as […]

Is “deadlock detected” really an error? Should I be suppressing them after handling them?

By adminPosted on January 28, 2023

Question : A while ago, I spent a nightmarish number of weeks dealing with “deadlock detected” and trying to figure […]

Locking issue with concurrent DELETE / INSERT in PostgreSQL

By adminPosted on January 28, 2023

Question : This is pretty simple, but I’m baffled by what PG does (v9.0). We start with a simple table: […]

Insert multiples rows/columns – PostgreSQL 9.2

By adminPosted on January 28, 2023

Question : I’ve got a table that has several columns, But I need to insert data into two columns of […]

Profiling a PostgreSQL function [duplicate]

By adminPosted on January 28, 2023

Question : This question already has answers here: Postgres query plan of a function invocation written in plpgsql (2 answers) […]

postgres finding child tables for particular table

By adminPosted on January 28, 2023

Question : I want to find all child tables corresponding to particular parent table. SELECT * FROM information_schema.table_constraints tc right […]

how can I join two very different table structures? No common keys

By adminPosted on January 28, 2023

Question : For the purpose of good database design, I’ve never run into an issue like this, but we are […]

Postgresql: How to pass an array to trigger function in TG_ARGV?

By adminPosted on January 28, 2023

Question : I’ve got some fairly generic Postgres trigger functions that I’d like to re-use across a few different tables. […]

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