Add Include All Queries In The Log File as a Postgres til

Author: jbranchaud

README.md

@@ -10,7 +10,7 @@ pairing with smart people at Hashrocket.
 
 For a steady stream of TILs, [sign up for my newsletter](https://crafty-builder-6996.ck.page/e169c61186).
 
-_1179 TILs and counting..._
+_1180 TILs and counting..._
 
 ---
 
@@ -595,6 +595,7 @@ _1179 TILs and counting..._
 - [Get The Size Of An Index](postgres/get-the-size-of-an-index.md)
 - [Getting A Slice Of An Array](postgres/getting-a-slice-of-an-array.md)
 - [Group By The Result Of A Function Call](postgres/group-by-the-result-of-a-function-call.md)
+- [Include All Queries In The Log File](postgres/include-all-queries-in-the-log-file.md)
 - [Insert A Bunch Of Records With Generate Series](postgres/insert-a-bunch-of-records-with-generate-series.md)
 - [Insert Just The Defaults](postgres/insert-just-the-defaults.md)
 - [Install Postgres With uuid-ossp Using asdf](postgres/install-postgres-with-uuid-ossp-using-asdf.md)

postgres/include-all-queries-in-the-log-file.md

@@ -0,0 +1,22 @@
+# Include All Queries In The Log File
+
+The default log-level (`log_statement` setting) for a PostgreSQL server is
+`none`. Other valid log-levels for [that setting are `ddl`, `mod`, and
+`all`](https://www.postgresql.org/docs/13/runtime-config-logging.html).
+
+If you want to see all the queries hitting a database, you'll want to set it to
+`all`. This can be set as a server-wide setting or it can be set on a
+per-session basis.
+
+Because `all` is so noisy, I like to use it on a per-session basis when I'm in
+a situation where I know I'd like to see all queries.
+
+```sql
+> set log_statement = 'all';
+```
+
+After running that statement in my `psql` session, I can tail the log file to
+keep an eye on queries hitting the database.
+
+Be sure that [logging is enabled via the
+`logging_collector`](enable-logging-of-database-activity.md) as well.