doc: Quote value in SET NAMES documentation

The value passed to SET NAMES should be wrapped in single quotes.

Reported-by: jian he 
Discussion: https://postgr.es/m/CACJufxG3EoUsbX4ZoMFkWrvBJcSCbPjdpRvPhuQN65fADc3mFg@mail.gmail.com

diff --git a/doc/src/sgml/ref/set.sgml b/doc/src/sgml/ref/set.sgml
index f0e6047e0b1179825e8e73a882d296d534bb3445..2218f54682ec32038ae1a072ce656a9ff51ccaee 100644 (file)
--- a/doc/src/sgml/ref/set.sgml
+++ b/doc/src/sgml/ref/set.sgml
@@ -165,7 +165,7 @@ SET [ SESSION | LOCAL ] TIME ZONE { value
     
      NAMES
      
-      SET NAMES value is an alias for
+      SET NAMES 'value' is an alias for
        SET client_encoding TO value.