I am trying to check how the table size is going to be increased after adding new column with default values. I use the following default values: NULL, ''(empty string) and some text(some random ...
I need to calculate the average score of a list of userId. I have a table user_place_score: (user_id, place_id, score) Sometimes I do not have the score (no row for (user_id,place_id) in the ...
In Postgres 9.x, for a column of type UUID, how do I specify a UUID to be generated automatically as a default value for any row insert?