In the previous chapter, we discussed aggregate concepts, where we created custom aggregates to solve users’ specific problems using state changes and final functions. In this chapter, we will talk about the LISTEN and NOTIFY commands, which act as interprocess communication between database connections. Essentially, two sessions communicate over a channel, with LISTEN looking for changes from the other session and NOTIFY sending messages ...
© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2023
B. Shaik, D. K. ChemuduruProcedural Programming with PostgreSQL PL/pgSQLhttps://doi.org/10.1007/978-1-4842-9840-4_1818. Listen and Notify
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