Change song to explicit with jaikoz3/31/2024 (However, a transaction never conflicts with itself. Two transactions cannot hold locks of conflicting modes on the same table at the same time. The only real difference between one lock mode and another is the set of lock modes with which each conflicts (see Table 13-2). To some extent the names reflect the typical usage of each lock mode - but the semantics are all the same. Remember that all of these lock modes are table-level locks, even if the name contains the word "row" the names of the lock modes are historical. You can also acquire any of these locks explicitly with the command LOCK. The list below shows the available lock modes and the contexts in which they are used automatically by PostgreSQL.
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