From f5382cfc7036325867b4d99f156ef7800aa15501 Mon Sep 17 00:00:00 2001 From: Bruce Momjian Date: Fri, 2 Nov 2018 08:54:34 -0400 Subject: [PATCH] doc: use simpler language for NULL return from ANY/ALL Previously the combination of "does not return" and "any row" caused ambiguity. Reported-by: KES Discussion: https://postgr.es/m/153701242703.22334.1476830122267077397@wrigleys.postgresql.org Reviewed-by: David G. Johnston Backpatch-through: 9.3 --- doc/src/sgml/func.sgml | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml index 92eb084d3c..87e1243982 100644 --- a/doc/src/sgml/func.sgml +++ b/doc/src/sgml/func.sgml @@ -14620,7 +14620,7 @@ WHERE EXISTS (SELECT 1 FROM tab2 WHERE col2 = tab1.col2); The result is false if the comparison returns false for every subquery row (including the case where the subquery returns no rows). - The result is NULL if the comparison does not return true for any row, + The result is NULL if no comparison with a subquery row returns true, and it returns NULL for at least one row. @@ -14646,7 +14646,7 @@ WHERE EXISTS (SELECT 1 FROM tab2 WHERE col2 = tab1.col2); The result of ALL is true if all rows yield true (including the case where the subquery returns no rows). The result is false if any false result is found. - The result is NULL if the comparison does not return false for any row, + The result is NULL if no comparison with a subquery row returns false, and it returns NULL for at least one row. @@ -14676,8 +14676,8 @@ WHERE EXISTS (SELECT 1 FROM tab2 WHERE col2 = tab1.col2); case where the subquery returns no rows). The result is false if the comparison returns false for any subquery row. - The result is NULL if the comparison does not return false for any - subquery row, and it returns NULL for at least one row. + The result is NULL if no comparison with a subquery row returns false, + and it returns NULL for at least one row.