Hi, Adrian On Tue, Jul 3, 2018 at 1:24 PM, Adrian Klaver <adrian.klaver@xxxxxxxxxxx> wrote: > On 07/03/2018 11:15 AM, Igor Korot wrote: >> >> Adrian, >> >> On Tue, Jul 3, 2018 at 12:32 PM, Adrian Klaver >> <adrian.klaver@xxxxxxxxxxx> wrote: >>> >>> On 07/03/2018 10:21 AM, Igor Korot wrote: >>>> >>>> >>>> Hi, ALL, >>>> Is there any trigger or some other means I can do on the server >>>> which will watch for CREATE/ALTER/DROP TABLE command and after >>>> successful >>>> execution of those will issue a NOTIFY statement? >>> >>> >>> >>> https://www.postgresql.org/docs/10/static/event-triggers.html >> >> >> According to the documentation the lowest version it supports is 9.3. >> Anything prior to that? >> >> I'm working with OX 10.8 and it has 9.1 installed. > > 9.1 went EOL almost two years ago. The oldest supported version is 9.3, > though it will go EOL this September: > > https://www.postgresql.org/support/versioning/ > > Are you forced to work with 9.1 or can you use something from here: > > https://www.postgresql.org/download/macosx/ > > to get a newer version? FYI that will be a major upgrade so will require a > dump/restore or use of pg_upgrade. Just a thought... Is it possible to create a trigger for a system table? Or this operation is restricted for when the server is actually being set-up? Successful "CREATE TABLE..." statement creates a row inside the information_schema.tables so if I can create a trigger after this record is inserted or deleted that should be fine. Thank you. > >> >> And a second question - how do I work with it? >> I presume that function will have to be compiled in its own module >> (either dll, so or dylib). >> But then from the libpq interface how do I call it? > > > It can use functions written in PL languages. See below: > > https://www.postgresql.org/docs/10/static/sql-createeventtrigger.html > > for an example written in plpgsql. > > > > > >> >> Thank you. >> >>> >>>> >>>> Thank you. >>>> >>> >>> >>> -- >>> Adrian Klaver >>> adrian.klaver@xxxxxxxxxxx > > > > -- > Adrian Klaver > adrian.klaver@xxxxxxxxxxx
