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Deparse named arguments to use the new => operator instead of :=

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Tom Lane pointed out that this wasn't done, and asked whether that was
intentional.  Subsequent discussion was in favor of making the change,
so here we go.
This commit is contained in:
Robert Haas 2015-05-01 09:37:10 -04:00
parent e7cb7ee145
commit e044a44949
3 changed files with 8 additions and 8 deletions
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2
src/backend/parser/parse_func.c
View File

@ -1860,7 +1860,7 @@ funcname_signature_string(const char *funcname, int nargs,
appendStringInfoString(&argbuf, ", ");
if (i >= numposargs)
{
appendStringInfo(&argbuf, "%s := ", (char *) lfirst(lc));
appendStringInfo(&argbuf, "%s => ", (char *) lfirst(lc));
lc = lnext(lc);
}
appendStringInfoString(&argbuf, format_type_be(argtypes[i]));

2
src/backend/utils/adt/ruleutils.c
View File

@ -6856,7 +6856,7 @@ get_rule_expr(Node *node, deparse_context *context,
{
NamedArgExpr *na = (NamedArgExpr *) node;
appendStringInfo(buf, "%s := ", quote_identifier(na->name));
appendStringInfo(buf, "%s => ", quote_identifier(na->name));
get_rule_expr((Node *) na->arg, context, showimplicit);
}
break;

12
src/test/regress/expected/polymorphism.out
View File

@ -1124,17 +1124,17 @@ ERROR: positional argument cannot follow named argument
LINE 1: select * from dfunc(10, b := 20, 30);
^
select * from dfunc(x := 10, b := 20, c := 30); -- fail, unknown param
ERROR: function dfunc(x := integer, b := integer, c := integer) does not exist
ERROR: function dfunc(x => integer, b => integer, c => integer) does not exist
LINE 1: select * from dfunc(x := 10, b := 20, c := 30);
^
HINT: No function matches the given name and argument types. You might need to add explicit type casts.
select * from dfunc(10, 10, a := 20); -- fail, a overlaps positional parameter
ERROR: function dfunc(integer, integer, a := integer) does not exist
ERROR: function dfunc(integer, integer, a => integer) does not exist
LINE 1: select * from dfunc(10, 10, a := 20);
^
HINT: No function matches the given name and argument types. You might need to add explicit type casts.
select * from dfunc(1,c := 2,d := 3); -- fail, no value for b
ERROR: function dfunc(integer, c := integer, d := integer) does not exist
ERROR: function dfunc(integer, c => integer, d => integer) does not exist
LINE 1: select * from dfunc(1,c := 2,d := 3);
^
HINT: No function matches the given name and argument types. You might need to add explicit type casts.
@ -1175,7 +1175,7 @@ select * from dfunc('Hello World', c := '2009-07-25'::date, b := 20);
(1 row)
select * from dfunc('Hello World', c := 20, b := '2009-07-25'::date); -- fail
ERROR: function dfunc(unknown, c := integer, b := date) does not exist
ERROR: function dfunc(unknown, c => integer, b => date) does not exist
LINE 1: select * from dfunc('Hello World', c := 20, b := '2009-07-25...
^
HINT: No function matches the given name and argument types. You might need to add explicit type casts.
@ -1450,8 +1450,8 @@ select * from dfview;
View definition:
SELECT int8_tbl.q1,
int8_tbl.q2,
dfunc(int8_tbl.q1, int8_tbl.q2, flag := int8_tbl.q1 > int8_tbl.q2) AS c3,
dfunc(int8_tbl.q1, flag := int8_tbl.q1 < int8_tbl.q2, b := int8_tbl.q2) AS c4
dfunc(int8_tbl.q1, int8_tbl.q2, flag => int8_tbl.q1 > int8_tbl.q2) AS c3,
dfunc(int8_tbl.q1, flag => int8_tbl.q1 < int8_tbl.q2, b => int8_tbl.q2) AS c4
FROM int8_tbl;
drop view dfview;