![]() But without more details I can't suggest any possible way to do it. Then maybe you don't need any intermediate storage at all. I would probably try to re-write the function to be able to work on multiple rows and then join that in the outer query rather calling it in the SELECT list as you seem to be doing. Hundreds or a few thousands should be OK though.Īlternatively you create a type that represents the function's result and aggregate the result into an array of the record type (rather than having four arrays). Of course, this is only feasible if the function doesn't return millions of rows. Into c1_result, c2_result, c3_result, c4_result Something like: select array_agg(c1), array_agg(c2), array_agg(c2), array_agg(c3) One way to work around the temp table could also be to store the result into arrays. But without seeing more of the code (the "calls other function." part), I can't offer any alternatives. So that no intermediate storage is needed at all. I would be inclined to do everything in a single statement that joins to the result of the function call, rather than storing the result somewhere. This is really hard to answer, because you don't show the big picture. ![]() Attempt to delete a non-existing trigger without specifying the IF EXISTS statement results in an error. Second, use IF EXISTS to conditionally delete the trigger only if it exists. What is an alternative to dropping/creating temp tables, if you need a "table variable" in a function? In this syntax: First, specify the name of the trigger which you want to delete after the DROP TRIGGER keywords. select remove_vertices(geom) from some_table), the dropping and creation of the temp table can occur as many times as there are rows in a table. import psycopg2 Connect to the PostgreSQL database conn nnect ( host'yourhost', database'yourdatabase', user'yourusername', password'yourpassword' ) Create a cursor object to execute SQL commands cur conn.cursor () Define the name of the table to delete tablename 'yourtablename' Define the SQL query to. Since this function is supposed to be called per row of a table (i.e. Then - do something with invalid_pnts table and the input "par_geom" ![]() The basic syntax of the Oracle DROP TABLE statement is. Select count(*) into cnt from invalid_pnts Oracle does not support the use of DROP TABLE IF EXISTS because it is not part of the SQL standard. where X corresponds to number of faulty vertices in a postgis geometry selfintersects(par_geom) returns X rows with 4 columns/attributes, I have tried to increase the max_locks_per_transaction, but it still occurs.Īs far as i understand from the answer in this post ("PostgreSQL complaining about shared memory, but shared memory seems to be OK") creating and dropping temp tables creates locks which can result in the earlier-mentioned warning.įor example: create or replace function remove_vertices(par_geom geometry) I have been creating some functions lately that run into the "out of shared memory" warning in postgres.
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