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Just noticed that the grammar actually has no provision for '+' as a

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prefix operator :-(.  Bad enough that we have no implementation of
unary plus, but at least with this fix the grammar will take it.
This commit is contained in:
Tom Lane 2000-03-18 04:32:35 +00:00
parent caa6fc1ba2
commit 15115344f0
1 changed files with 8 additions and 3 deletions
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11
src/backend/parser/gram.y
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@ -11,7 +11,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.158 2000/03/18 00:33:45 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.159 2000/03/18 04:32:35 tgl Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@ -4168,6 +4168,8 @@ a_expr: c_expr
* If you add more explicitly-known operators, be sure to add them
* also to b_expr and to the MathOp list above.
*/
| '+' a_expr %prec UMINUS
{ $$ = makeA_Expr(OP, "+", NULL, $2); }
| '-' a_expr %prec UMINUS
{ $$ = doNegate($2); }
| '%' a_expr
@ -4384,6 +4386,8 @@ b_expr: c_expr
{ $$ = $1; }
| b_expr TYPECAST Typename
{ $$ = makeTypeCast($1, $3); }
| '+' b_expr %prec UMINUS
{ $$ = makeA_Expr(OP, "+", NULL, $2); }
| '-' b_expr %prec UMINUS
{ $$ = doNegate($2); }
| '%' b_expr
@ -5480,8 +5484,9 @@ mapTargetColumns(List *src, List *dst)
* Do not convert "float", since that is handled elsewhere
* for FLOAT(p) syntax.
*
* Converting "datetime" to "timestamp" is a temporary expedient for
* pre-7.0 to 7.0 compatibility; it should go away again someday.
* Converting "datetime" to "timestamp" and "timespan" to "interval"
* is a temporary expedient for pre-7.0 to 7.0 compatibility;
* these should go away someday.
*/
static char *
xlateSqlFunc(char *name)