Add Limit Execution Time Of Statements as a postgres til.

README.md

@@ -59,6 +59,7 @@ smart people at [Hashrocket](http://hashrocket.com/).
 - [Count Records By Type](postgres/count-records-by-type.md)
 - [Extracting Nested JSON Data](postgres/extracting-nested-json-data.md)
 - [Generate Series Of Numbers](postgres/generate-series-of-numbers.md)
+- [Limit Execution Time Of Statements](postgres/limit-execution-time-of-statements.md)
 - [String Contains Another String](postgres/string-contains-another-string.md)
 - [Timestamp Functions](postgres/timestamp-functions.md)
 - [Toggling The Pager In PSQL](postgres/toggling-the-pager-in-psql.md)

postgres/limit-execution-time-of-statements.md

@@ -0,0 +1,26 @@
+# Limit Execution Time Of Statements
+
+You can limit the amount of time that postgres will execute a statement
+by setting a hard timeout. By default the timeout is 0 (see `show
+statement_timeout;`) which means statements will be given as much time as
+they need.
+
+If you do want to limit your statements, to say, 1 second, you can set the
+execution time like so
+
+```sql
+> set statement_timeout = '1s';
+SET
+> show statement_timeout;
+ statement_timeout
+-------------------
+ 1s
+(1 row)
+```
+
+Any queries taking longer than 1 second will be aborted with the following
+message output
+
+```
+ERROR:  canceling statement due to statement timeout
+```