Document lock level used by ALTER TABLE VALIDATE CONSTRAINT

Backpatch all the way back to 9.6.

Author: Simon Riggs 
Discussion: https://postgr.es/m/CANbhV-EwxvdhHuOLdfG2ciYrHOHXV=mm6=fD5aMhqcH09Li3Tg@mail.gmail.com

diff --git a/doc/src/sgml/ref/alter_table.sgml b/doc/src/sgml/ref/alter_table.sgml
index 609aeae2576d31d6190f1bd76797dd81254b1208..68ef3e9b4f363e15faa2226c847a78c1968307df 100644 (file)
--- a/doc/src/sgml/ref/alter_table.sgml
+++ b/doc/src/sgml/ref/alter_table.sgml
@@ -506,6 +506,9 @@ WITH ( MODULUS numeric_literal, REM
       (See  below for an explanation
       of the usefulness of this command.)
      
+     
+      This command acquires a SHARE UPDATE EXCLUSIVE lock.
+