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On 2022-08-07 7:54 AM, Ron wrote: > On 8/7/22 00:30, Frank Millman wrote: >> Hi all >> >> Apologies if this is an FAQ, but I could not find the answer I was >> looking for. >> >> I want to run two SELECTs, one immediately after the other. >> >> I want to ensure that no other process updates the database in >> between the two. >> >> What is the best way to achieve this? > > You probably want to put the queries in a Repeatable Read transaction, > or even a READ ONLY serialized transaction. > https://www.postgresql.org/docs/12/transaction-iso.html#XACT-REPEATABLE-READ > > https://www.postgresql.org/docs/12/transaction-iso.html#XACT-SERIALIZABLE > https://www.postgresql.org/docs/12/sql-set-transaction.html > Thanks, Ron. That is exactly what I am looking for. Frank
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