Eugene 🔒 trace report of examples/E5/good/1.sql

Statement number 1 for 10ms

SQL

-- 1.sql
create table prices (
    id integer generated always as identity
        primary key,
    price int not null
)

Locks at start

No locks held at the start of this statement.

New locks taken

No new locks taken by this statement.

Eugene 🔒 trace report of examples/E5/good/2.sql

Statement number 1 for 10ms

SQL

-- 2.sql
set local lock_timeout = '2s'

Locks at start

No locks held at the start of this statement.

New locks taken

No new locks taken by this statement.

Statement number 2 for 10ms

SQL

alter table prices
    add column new_price bigint

Locks at start

No locks held at the start of this statement.

New locks taken

SchemaObjectModeRelkindOIDSafeDuration held (ms)
publicpricesAccessExclusiveLockTable110

Eugene 🔒 trace report of examples/E5/good/3.sql

Statement number 1 for 10ms

SQL

-- 3.sql
update prices set new_price = price :: bigint

Locks at start

No locks held at the start of this statement.

New locks taken

No new locks taken by this statement.

Statement number 2 for 10ms

SQL

set local lock_timeout = '2s'

Locks at start

No locks held at the start of this statement.

New locks taken

No new locks taken by this statement.

Statement number 3 for 10ms

SQL

alter table prices
    add constraint check_new_price_not_null
        check (new_price is not null) not valid

Locks at start

No locks held at the start of this statement.

New locks taken

SchemaObjectModeRelkindOIDSafeDuration held (ms)
publicpricesAccessExclusiveLockTable110

Eugene 🔒 trace report of examples/E5/good/4.sql

Statement number 1 for 10ms

SQL

-- 4.sql
set local lock_timeout = '2s'

Locks at start

No locks held at the start of this statement.

New locks taken

No new locks taken by this statement.

Statement number 2 for 10ms

SQL

alter table prices
    validate constraint check_new_price_not_null,
    drop column price

Locks at start

No locks held at the start of this statement.

New locks taken

SchemaObjectModeRelkindOIDSafeDuration held (ms)
publicpricesAccessExclusiveLockTable110

Statement number 3 for 10ms

SQL

-- eugene: ignore E4
-- this has to run in the same transaction as dropping the old price column
alter table prices
    rename column new_price to price

Locks at start

SchemaObjectModeRelkindOIDSafeDuration held (ms)
publicpricesAccessExclusiveLockTable110

New locks taken

No new locks taken by this statement.