mirror of
https://github.com/postgres/postgres.git
synced 2025-07-11 10:01:57 +03:00
Allow named parameters to be specified using => in addition to :=
SQL has standardized on => as the use of to specify named parameters, and we've wanted for many years to support the same syntax ourselves, but this has been complicated by the possible use of => as an operator name. In PostgreSQL 9.0, we began emitting a warning when an operator named => was defined, and in PostgreSQL 9.2, we stopped shipping a =>(text, text) operator as part of hstore. By the time the next major version of PostgreSQL is released, => will have been deprecated for a full five years, so hopefully there won't be too many people still relying on it. We continue to support := for compatibility with previous PostgreSQL releases. Pavel Stehule, reviewed by Petr Jelinek, with a few documentation tweaks by me.
This commit is contained in:
@ -533,7 +533,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
|
||||
*/
|
||||
%token <str> IDENT FCONST SCONST BCONST XCONST Op
|
||||
%token <ival> ICONST PARAM
|
||||
%token TYPECAST DOT_DOT COLON_EQUALS
|
||||
%token TYPECAST DOT_DOT COLON_EQUALS EQUALS_GREATER
|
||||
|
||||
/*
|
||||
* If you want to make any keyword changes, update the keyword table in
|
||||
@ -12567,6 +12567,15 @@ func_arg_expr: a_expr
|
||||
na->location = @1;
|
||||
$$ = (Node *) na;
|
||||
}
|
||||
| param_name EQUALS_GREATER a_expr
|
||||
{
|
||||
NamedArgExpr *na = makeNode(NamedArgExpr);
|
||||
na->name = $1;
|
||||
na->arg = (Expr *) $3;
|
||||
na->argnumber = -1; /* until determined */
|
||||
na->location = @1;
|
||||
$$ = (Node *) na;
|
||||
}
|
||||
;
|
||||
|
||||
type_list: Typename { $$ = list_make1($1); }
|
||||
|
@ -334,6 +334,7 @@ identifier {ident_start}{ident_cont}*
|
||||
typecast "::"
|
||||
dot_dot \.\.
|
||||
colon_equals ":="
|
||||
equals_greater "=>"
|
||||
|
||||
/*
|
||||
* "self" is the set of chars that should be returned as single-character
|
||||
@ -808,6 +809,11 @@ other .
|
||||
return COLON_EQUALS;
|
||||
}
|
||||
|
||||
{equals_greater} {
|
||||
SET_YYLLOC();
|
||||
return EQUALS_GREATER;
|
||||
}
|
||||
|
||||
{self} {
|
||||
SET_YYLLOC();
|
||||
return yytext[0];
|
||||
|
Reference in New Issue
Block a user