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Biigint ftw wave 2 #9170
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Biigint ftw wave 2 #9170
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,62 @@ | ||
\set ON_ERROR_STOP on | ||
|
||
-- Check if the safety flag variable exists | ||
\if :i_know_what_i_do | ||
-- your migration code here | ||
\else | ||
\echo 'Safety flag not set. Run with: psql -v i_know_what_i_do=true -f migration_40.sql' | ||
\q | ||
\endif | ||
|
||
DO $$ | ||
DECLARE | ||
r RECORD; | ||
BEGIN | ||
-- First convert all PKs | ||
FOR r IN ( | ||
SELECT | ||
t.table_name, | ||
c.column_name | ||
FROM information_schema.tables t | ||
JOIN information_schema.columns c | ||
ON t.table_name = c.table_name | ||
AND t.table_schema = c.table_schema | ||
JOIN information_schema.key_column_usage k | ||
ON c.column_name = k.column_name | ||
AND c.table_name = k.table_name | ||
WHERE c.data_type = 'integer' | ||
AND t.table_schema = 'public' | ||
AND EXISTS ( | ||
SELECT 1 | ||
FROM information_schema.table_constraints tc | ||
WHERE tc.constraint_type = 'PRIMARY KEY' | ||
AND tc.table_name = t.table_name | ||
AND tc.constraint_name = k.constraint_name | ||
) | ||
) LOOP | ||
RAISE NOTICE 'Converting PK column % in table % to bigint', r.column_name, r.table_name; | ||
EXECUTE format('ALTER TABLE %I ALTER COLUMN %I TYPE bigint', r.table_name, r.column_name); | ||
END LOOP; | ||
|
||
-- Then convert all FKs | ||
FOR r IN ( | ||
SELECT DISTINCT | ||
t.table_name, | ||
c.column_name | ||
FROM information_schema.tables t | ||
JOIN information_schema.columns c | ||
ON t.table_name = c.table_name | ||
AND t.table_schema = c.table_schema | ||
JOIN information_schema.key_column_usage k | ||
ON c.column_name = k.column_name | ||
AND c.table_name = k.table_name | ||
JOIN information_schema.table_constraints tc | ||
ON tc.constraint_name = k.constraint_name | ||
WHERE c.data_type = 'integer' | ||
AND t.table_schema = 'public' | ||
AND tc.constraint_type = 'FOREIGN KEY' | ||
) LOOP | ||
RAISE NOTICE 'Converting FK column % in table % to bigint', r.column_name, r.table_name; | ||
EXECUTE format('ALTER TABLE %I ALTER COLUMN %I TYPE bigint', r.table_name, r.column_name); | ||
END LOOP; | ||
END $$; |
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Not needed since we have a relationship defined below.