Mention change of width of values generated by SERIAL sequences

This changed during pg10 development, but had not been documented.

Co-authored-by: Jonathan S. Katz 
Discussion: https://postgr.es/m/20180828163408[email protected]

diff --git a/doc/src/sgml/release-10.sgml b/doc/src/sgml/release-10.sgml
index f1b0f2e0bfd7c9acfb570f667f7dc0f6a2a48a90..b5bf035abd3837a5670cdeab59cd20fbc7313d9f 100644 (file)
--- a/doc/src/sgml/release-10.sgml
+++ b/doc/src/sgml/release-10.sgml
@@ -4716,6 +4716,13 @@ Branch: REL_10_STABLE [5159626af] 2017-11-03 14:14:16 -0400
       more compatible with existing code.
      
 
+     
+      Also, sequences created for SERIAL columns now generate
+      positive 32-bit wide values, whereas previous versions generated 64-bit
+      wide values.  This has no visible effect if the values are only stored in
+      a column.
+     
+
      
       The output of psql's \d command for a
       sequence has been redesigned, too.