*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 1.47 1997/09/18 03:46:18 thomas Exp $
+ * $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 1.48 1997/09/20 16:11:42 thomas Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
/* Keywords */
%token ABORT_TRANS, ACL, ADD, AFTER, AGGREGATE, ALL, ALTER, ANALYZE,
AND, APPEND, ARCHIVE, ARCH_STORE, AS, ASC,
- BACKWARD, BEFORE, BEGIN_TRANS, BETWEEN, BINARY, BOTH, BY,
+ BACKWARD, BEFORE, BEGIN_TRANS, BETWEEN, BINARY, BY,
CAST, CHANGE, CHECK, CLOSE, CLUSTER, COLUMN,
COMMIT, CONSTRAINT, COPY, CREATE, CROSS, CURRENT, CURSOR,
- DATABASE, DAYINTERVAL, DECLARE, DEFAULT, DELETE, DELIMITERS, DESC,
+ DATABASE, DECLARE, DEFAULT, DELETE, DELIMITERS, DESC,
DISTINCT, DO, DROP, END_TRANS, EXISTS, EXTEND,
- FETCH, FOR, FORWARD, FROM, FULL, FUNCTION, GRANT, GROUP, HAVING, HEAVY, HOURINTERVAL,
- IN, INDEX, INHERITS, INNERJOIN, INSERT, INTERVAL, INSTEAD, INTO, IS, ISNULL,
- JOIN, LANGUAGE, LEADING, LEFT, LIGHT, LISTEN, LOAD, LOCAL, MERGE, MINUTEINTERVAL, MONTHINTERVAL, MOVE,
+ FETCH, FOR, FORWARD, FROM, FULL, FUNCTION, GRANT, GROUP, HAVING, HEAVY,
+ IN, INDEX, INHERITS, INNERJOIN, INSERT, INSTEAD, INTO, IS, ISNULL,
+ JOIN, LANGUAGE, LEFT, LIGHT, LISTEN, LOAD, LOCAL, MERGE, MOVE,
NATURAL, NEW, NONE, NOT, NOTHING, NOTIFY, NOTNULL,
OIDS, ON, OPERATOR, OPTION, OR, ORDER, OUTERJOIN,
PNULL, PRIVILEGES, PROCEDURE, PUBLIC, PURGE, P_TYPE,
RENAME, REPLACE, RESET, RETRIEVE, RETURNS, REVOKE, RIGHT, ROLLBACK, RULE,
- SECONDINTERVAL, SELECT, SET, SETOF, SHOW, STDIN, STDOUT, STORE,
- TABLE, TIME, TO, TRAILING, TRANSACTION, TRIGGER,
+ SELECT, SET, SETOF, SHOW, STDIN, STDOUT, STORE,
+ TABLE, TO, TRANSACTION, TRIGGER,
UNION, UNIQUE, UPDATE, USING, VACUUM, VALUES,
- VERBOSE, VERSION, VIEW, WHERE, WITH, WORK, YEARINTERVAL, ZONE
+ VERBOSE, VERSION, VIEW, WHERE, WITH, WORK
%token EXECUTE, RECIPE, EXPLAIN, LIKE, SEQUENCE
/* SQL-92 support */
+%token INTERVAL, TIME, ZONE
+%token DAYINTERVAL, HOURINTERVAL, MINUTEINTERVAL, MONTHINTERVAL,
+ SECONDINTERVAL, YEARINTERVAL
+%token BOTH, LEADING, TRAILING,
%token EXTRACT, POSITION, SUBSTRING, TRIM
-%token DOUBLE, PRECISION
+%token DOUBLE, PRECISION, FLOAT
%token CHARACTER, VARYING
/* Special keywords, not in the query language - see the "lex" file */
{
$$ = $3;
}
+ | ADD '(' tableElementList ')'
+ {
+ ColumnDef *lp = lfirst($3);
+
+ if (length($3) != 1)
+ elog(WARN,"ALTER TABLE/ADD() allows one column only",NULL);
+#ifdef PARSEDEBUG
+printf( "list has %d elements\n", length($3));
+#endif
+ $$ = lp;
+ }
| DROP opt_column Id
{ elog(WARN,"ALTER TABLE/DROP COLUMN not yet implemented",NULL); }
| ALTER opt_column Id SET opt_default
{ $$ = NIL; }
;
+/*
+ * typname handles types without trailing parens for size specification.
+ * Typename uses either typname or explicit txname(size).
+ * So, must handle float in both places. - thomas 1997-09-20
+ */
+
typname: txname
{
- char *tname = xlateSqlType($1);
+ char *tname;
$$ = makeNode(TypeName);
+
+ if (!strcasecmp($1, "float"))
+ tname = xlateSqlType("float8");
+ else
+ tname = xlateSqlType($1);
$$->name = tname;
/* Is this the name of a complex type? If so, implement
| INTERVAL interval_opts { $$ = xlateSqlType("interval"); }
| CHARACTER char_type { $$ = $2; }
| DOUBLE PRECISION { $$ = xlateSqlType("float8"); }
+ | FLOAT { $$ = xlateSqlType("float"); }
;
char_type: VARYING { $$ = xlateSqlType("varchar"); }
$$ = $1;
$$->arrayBounds = $2;
if (!strcasecmp($1->name, "varchar"))
- {
$$->typlen = 4 + 1;
- }
}
| txname '(' Iconst ')'
{
/*
- * This block gets hit when the parser is passed a query
- * which contains only spaces (e.g. from psql type " \g").
- * Let's check explicitly for a zero-length argument
- * here, and do nothing if so. This seems to fix the problem.
- * - thomas 1997-07-13
+ * The following implements CHAR() and VARCHAR().
+ * We do it here instead of the 'typname:' production
+ * because we don't want to allow arrays of VARCHAR().
+ * I haven't thought about whether that will work or not.
+ * - ay 6/95
+ * Also implements FLOAT() - thomas 1997-09-18
*/
- if (strlen($1) > 0)
- {
+ $$ = makeNode(TypeName);
+ if (!strcasecmp($1, "float")) {
+ if ($3 < 1)
+ elog(WARN,"precision for '%s' type must be at least 1",$1);
+ else if ($3 <= 7)
+ $$->name = xlateSqlType("float4");
+ else if ($3 < 14)
+ $$->name = xlateSqlType("float8");
+ else
+ elog(WARN,"precision for '%s' type must be less than 14",$1);
- /*
- * The following implements char() and varchar().
- * We do it here instead of the 'typname:' production
- * because we don't want to allow arrays of varchar().
- * I haven't thought about whether that will work or not.
- * - ay 6/95
- */
- $$ = makeNode(TypeName);
+ } else {
if (!strcasecmp($1, "char"))
- $$->name = "bpchar"; /* strdup("bpchar"); */
+ $$->name = xlateSqlType("bpchar");
else if (!strcasecmp($1, "varchar"))
- $$->name = "varchar"; /* strdup("varchar"); */
+ $$->name = xlateSqlType("varchar");
else
yyerror("parse error");
if ($3 < 1)
* truncate where necessary
*/
$$->typlen = 4 + $3;
-
}
}
;
/* xlateSqlType()
* Convert alternate type names to internal Postgres types.
+ * Do not convert "float", since that is handled elsewhere
+ * for FLOAT(p) syntax.
*/
static char *
xlateSqlType(char *name)
return "int4"; /* strdup("int4") -- strdup leaks memory here */
else if (!strcasecmp(name, "smallint"))
return "int2";
- else if (!strcasecmp(name, "float") ||
- !strcasecmp(name, "real"))
+ else if (!strcasecmp(name, "real"))
return "float8";
else if (!strcasecmp(name, "interval"))
return "timespan";
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