aboutsummaryrefslogtreecommitdiff
path: root/src/backend/optimizer/prep/prepqual.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/backend/optimizer/prep/prepqual.c')
-rw-r--r--src/backend/optimizer/prep/prepqual.c88
1 files changed, 44 insertions, 44 deletions
diff --git a/src/backend/optimizer/prep/prepqual.c b/src/backend/optimizer/prep/prepqual.c
index 7bb288f9566..a1f2f309247 100644
--- a/src/backend/optimizer/prep/prepqual.c
+++ b/src/backend/optimizer/prep/prepqual.c
@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/optimizer/prep/prepqual.c,v 1.9 1998/06/15 19:28:46 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/optimizer/prep/prepqual.c,v 1.10 1998/09/01 03:23:43 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -101,7 +101,7 @@ static Expr *
pull_args(Expr *qual)
{
if (qual == NULL)
- return (NULL);
+ return NULL;
if (is_opclause((Node *) qual))
{
@@ -117,7 +117,7 @@ pull_args(Expr *qual)
foreach(temp, qual->args)
t_list = lappend(t_list, pull_args(lfirst(temp)));
- return (make_andclause(pull_ands(t_list)));
+ return make_andclause(pull_ands(t_list));
}
else if (or_clause((Node *) qual))
{
@@ -126,12 +126,12 @@ pull_args(Expr *qual)
foreach(temp, qual->args)
t_list = lappend(t_list, pull_args(lfirst(temp)));
- return (make_orclause(pull_ors(t_list)));
+ return make_orclause(pull_ors(t_list));
}
else if (not_clause((Node *) qual))
- return (make_notclause(pull_args(get_notclausearg(qual))));
+ return make_notclause(pull_args(get_notclausearg(qual)));
else
- return (qual);
+ return qual;
}
/*
@@ -145,7 +145,7 @@ static List *
pull_ors(List *orlist)
{
if (orlist == NIL)
- return (NIL);
+ return NIL;
if (or_clause(lfirst(orlist)))
{
@@ -155,7 +155,7 @@ pull_ors(List *orlist)
copyObject((Node *) lnext(orlist)))));
}
else
- return (lcons(lfirst(orlist), pull_ors(lnext(orlist))));
+ return lcons(lfirst(orlist), pull_ors(lnext(orlist)));
}
/*
@@ -169,7 +169,7 @@ static List *
pull_ands(List *andlist)
{
if (andlist == NIL)
- return (NIL);
+ return NIL;
if (and_clause(lfirst(andlist)))
{
@@ -179,7 +179,7 @@ pull_ands(List *andlist)
copyObject((Node *) lnext(andlist)))));
}
else
- return (lcons(lfirst(andlist), pull_ands(lnext(andlist))));
+ return lcons(lfirst(andlist), pull_ands(lnext(andlist)));
}
/*
@@ -196,7 +196,7 @@ static Expr *
find_nots(Expr *qual)
{
if (qual == NULL)
- return (NULL);
+ return NULL;
if (is_opclause((Node *) qual))
{
@@ -213,7 +213,7 @@ find_nots(Expr *qual)
foreach(temp, qual->args)
t_list = lappend(t_list, find_nots(lfirst(temp)));
- return (make_andclause(t_list));
+ return make_andclause(t_list);
}
else if (or_clause((Node *) qual))
{
@@ -222,12 +222,12 @@ find_nots(Expr *qual)
foreach(temp, qual->args)
t_list = lappend(t_list, find_nots(lfirst(temp)));
- return (make_orclause(t_list));
+ return make_orclause(t_list);
}
else if (not_clause((Node *) qual))
- return (push_nots(get_notclausearg(qual)));
+ return push_nots(get_notclausearg(qual));
else
- return (qual);
+ return qual;
}
/*
@@ -241,7 +241,7 @@ static Expr *
push_nots(Expr *qual)
{
if (qual == NULL)
- return (NULL);
+ return NULL;
/*
* Negate an operator clause if possible: ("NOT" (< A B)) => (> A B)
@@ -265,7 +265,7 @@ push_nots(Expr *qual)
(make_opclause(op, get_leftop(qual), get_rightop(qual)));
}
else
- return (make_notclause(qual));
+ return make_notclause(qual);
}
else if (and_clause((Node *) qual))
{
@@ -280,7 +280,7 @@ push_nots(Expr *qual)
foreach(temp, qual->args)
t_list = lappend(t_list, push_nots(lfirst(temp)));
- return (make_orclause(t_list));
+ return make_orclause(t_list);
}
else if (or_clause((Node *) qual))
{
@@ -289,7 +289,7 @@ push_nots(Expr *qual)
foreach(temp, qual->args)
t_list = lappend(t_list, push_nots(lfirst(temp)));
- return (make_andclause(t_list));
+ return make_andclause(t_list);
}
else if (not_clause((Node *) qual))
@@ -297,14 +297,14 @@ push_nots(Expr *qual)
* Another 'not' cancels this 'not', so eliminate the 'not' and
* stop negating this branch.
*/
- return (find_nots(get_notclausearg(qual)));
+ return find_nots(get_notclausearg(qual));
else
/*
* We don't know how to negate anything else, place a 'not' at
* this level.
*/
- return (make_notclause(qual));
+ return make_notclause(qual);
}
/*
@@ -322,7 +322,7 @@ static Expr *
normalize(Expr *qual)
{
if (qual == NULL)
- return (NULL);
+ return NULL;
if (is_opclause((Node *) qual))
{
@@ -340,7 +340,7 @@ normalize(Expr *qual)
foreach(temp, qual->args)
t_list = lappend(t_list, normalize(lfirst(temp)));
- return (make_andclause(t_list));
+ return make_andclause(t_list);
}
else if (or_clause((Node *) qual))
{
@@ -360,15 +360,15 @@ normalize(Expr *qual)
}
}
if (has_andclause == TRUE)
- return (make_andclause(or_normalize(orlist)));
+ return make_andclause(or_normalize(orlist));
else
- return (make_orclause(orlist));
+ return make_orclause(orlist);
}
else if (not_clause((Node *) qual))
- return (make_notclause(normalize(get_notclausearg(qual))));
+ return make_notclause(normalize(get_notclausearg(qual)));
else
- return (qual);
+ return qual;
}
/*
@@ -405,7 +405,7 @@ or_normalize(List *orlist)
lnext(new_orlist))));
}
else
- return (orlist);
+ return orlist;
}
/*
@@ -425,7 +425,7 @@ distribute_args(List *item, List *args)
List *t_list = NIL;
if (args == NULL)
- return (item);
+ return item;
foreach(temp, args)
{
@@ -434,7 +434,7 @@ distribute_args(List *item, List *args)
or_list = (List *) make_orclause(n_list);
t_list = lappend(t_list, or_list);
}
- return ((List *) make_andclause(t_list));
+ return (List *) make_andclause(t_list);
}
/*
@@ -450,7 +450,7 @@ static List *
qualcleanup(Expr *qual)
{
if (qual == NULL)
- return (NIL);
+ return NIL;
if (is_opclause((Node *) qual))
{
@@ -471,9 +471,9 @@ qualcleanup(Expr *qual)
new_and_args = remove_duplicates(t_list);
if (length(new_and_args) > 1)
- return ((List *) make_andclause(new_and_args));
+ return (List *) make_andclause(new_and_args);
else
- return (lfirst(new_and_args));
+ return lfirst(new_and_args);
}
else if (or_clause((Node *) qual))
{
@@ -488,15 +488,15 @@ qualcleanup(Expr *qual)
if (length(new_or_args) > 1)
- return ((List *) make_orclause(new_or_args));
+ return (List *) make_orclause(new_or_args);
else
- return (lfirst(new_or_args));
+ return lfirst(new_or_args);
}
else if (not_clause((Node *) qual))
- return ((List *) make_notclause((Expr *) qualcleanup((Expr *) get_notclausearg(qual))));
+ return (List *) make_notclause((Expr *) qualcleanup((Expr *) get_notclausearg(qual)));
else
- return ((List *) qual);
+ return (List *) qual;
}
/*
@@ -513,7 +513,7 @@ remove_ands(Expr *qual)
List *t_list = NIL;
if (qual == NULL)
- return (NIL);
+ return NIL;
if (is_opclause((Node *) qual))
{
return ((List *) make_clause(qual->opType, qual->oper,
@@ -527,7 +527,7 @@ remove_ands(Expr *qual)
foreach(temp, qual->args)
t_list = lappend(t_list, remove_ands(lfirst(temp)));
- return (t_list);
+ return t_list;
}
else if (or_clause((Node *) qual))
{
@@ -535,12 +535,12 @@ remove_ands(Expr *qual)
foreach(temp, qual->args)
t_list = lappend(t_list, remove_ands(lfirst(temp)));
- return ((List *) make_orclause((List *) t_list));
+ return (List *) make_orclause((List *) t_list);
}
else if (not_clause((Node *) qual))
- return ((List *) make_notclause((Expr *) remove_ands((Expr *) get_notclausearg(qual))));
+ return (List *) make_notclause((Expr *) remove_ands((Expr *) get_notclausearg(qual)));
else
- return ((List *) qual);
+ return (List *) qual;
}
/*****************************************************************************
@@ -558,7 +558,7 @@ remove_duplicates(List *list)
bool there_exists_duplicate = false;
if (length(list) == 1)
- return (list);
+ return list;
foreach(i, list)
{
@@ -575,5 +575,5 @@ remove_duplicates(List *list)
there_exists_duplicate = false;
}
}
- return (result);
+ return result;
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-22 08:57:32 +0000