Doc: minor improvement in pl/pgsql FETCH/MOVE documentation.

Explain that you can use any integer expression for the "count" in
pl/pgsql's versions of FETCH/MOVE, unlike the SQL versions which only
allow a constant.

Remove the duplicate version of this para under MOVE.  I don't see
a good reason to maintain two identical paras when we just said that
MOVE works exactly like FETCH.

Per Pavel Stehule, though I didn't use his text.

Discussion: https://postgr.es/m/CAFj8pRAcvSXcNdUGx43bOK1e3NNPbQny7neoTLN42af+8MYWEA@mail.gmail.com

diff --git a/doc/src/sgml/plpgsql.sgml b/doc/src/sgml/plpgsql.sgml
index 5b2aac618e3c7392fd2eaa35d812fecf6623d36e..d6688e13f480d16c546334508a434f2a7622d312 100644 (file)
--- a/doc/src/sgml/plpgsql.sgml
+++ b/doc/src/sgml/plpgsql.sgml
@@ -3196,6 +3196,10 @@ FETCH  direction { FROM | IN } 
      BACKWARD.
      Omitting direction is the same
      as specifying NEXT.
+     In the forms using a count,
+     the count can be any integer-valued
+     expression (unlike the SQL FETCH command,
+     which only allows an integer constant).
      direction values that require moving
      backward are likely to fail unless the cursor was declared or opened
      with the SCROLL option.
@@ -3233,26 +3237,6 @@ MOVE  direction { FROM | IN }  <
      be checked to see whether there was a next row to move to.
     
 
-    
-     The direction clause can be any of the
-     variants allowed in the SQL 
-     command, namely
-     NEXT,
-     PRIOR,
-     FIRST,
-     LAST,
-     ABSOLUTE count,
-     RELATIVE count,
-     ALL,
-     FORWARD  count | ALL , or
-     BACKWARD  count | ALL .
-     Omitting direction is the same
-     as specifying NEXT.
-     direction values that require moving
-     backward are likely to fail unless the cursor was declared or opened
-     with the SCROLL option.
-    
-
     
      Examples:
 

diff --git a/doc/src/sgml/ref/fetch.sgml b/doc/src/sgml/ref/fetch.sgml
index 5ef63f0058369b383e2b8a288e3aace05483cf67..e802be61c8c6dd81d550f636edf42edecced072e 100644 (file)
--- a/doc/src/sgml/ref/fetch.sgml
+++ b/doc/src/sgml/ref/fetch.sgml
@@ -99,7 +99,7 @@ FETCH [ direction [ FROM | IN ] ] <
     This page describes usage of cursors at the SQL command level.
     If you are trying to use cursors inside a PL/pgSQL
     function, the rules are different —
-    see s"/>.
+    see -using"/>.