*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.274 2001/11/12 21:04:45 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.275 2001/11/16 04:08:33 tgl Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
%type <ival> Iconst
%type <str> Sconst, comment_text
%type <str> UserId, opt_boolean, var_value, ColId_or_Sconst
-%type <str> ColId, TypeFuncId, ColLabel
+%type <str> ColId, ColLabel, type_name, func_name_keyword
+%type <str> col_name_keyword, unreserved_keyword, reserved_keyword
%type <node> zone_value
%type <node> TableConstraint
* This gets annoying when trying to also retain Postgres' nice
* type-extensible features, but we don't really have a choice.
* - thomas 1997-10-11
- * NOTE: Whenever possible, try to add new keywords to the ColId list,
- * or failing that, at least to the ColLabel list.
+ * NOTE: don't forget to add new keywords to the appropriate one of
+ * the reserved-or-not-so-reserved keyword lists, below.
*/
/* Keywords (in SQL92 reserved words) */
/*
* We would like to make the second production here be ColId '.' ColId etc,
- * but that causes reduce/reduce conflicts. TypeFuncId is next best choice.
+ * but that causes reduce/reduce conflicts. type_name is next best choice.
*/
func_type: Typename
{
$$ = $1;
}
- | TypeFuncId '.' ColId '%' TYPE_P
+ | type_name '.' ColId '%' TYPE_P
{
$$ = makeNode(TypeName);
$$->name = $1;
| ConstDatetime
;
-GenericType: TypeFuncId
+GenericType: type_name
{
$$ = makeNode(TypeName);
$$->name = xlateSqlType($1);
UserId: ColId { $$ = $1; };
/*
+ * Name classification hierarchy.
+ *
+ * IDENT is the lexeme returned by the lexer for identifiers that match
+ * no known keyword. In most cases, we can accept certain keywords as
+ * names, not only IDENTs. We prefer to accept as many such keywords
+ * as possible to minimize the impact of "reserved words" on programmers.
+ * So, we divide names into several possible classes. The classification
+ * is chosen in part to make keywords acceptable as names wherever possible.
+ */
+
+/* Column identifier --- names that can be column, table, etc names.
+ */
+ColId: IDENT { $$ = $1; }
+ | unreserved_keyword { $$ = $1; }
+ | col_name_keyword { $$ = $1; }
+ ;
+
+/* Type identifier --- names that can be type names.
+ */
+type_name: IDENT { $$ = $1; }
+ | unreserved_keyword { $$ = $1; }
+ ;
+
+/* Function identifier --- names that can be function names.
+ */
+func_name: IDENT { $$ = xlateSqlFunc($1); }
+ | unreserved_keyword { $$ = xlateSqlFunc($1); }
+ | func_name_keyword { $$ = xlateSqlFunc($1); }
+ ;
+
+/* Column label --- allowed labels in "AS" clauses.
+ * This presently includes *all* Postgres keywords.
+ */
+ColLabel: IDENT { $$ = $1; }
+ | unreserved_keyword { $$ = $1; }
+ | col_name_keyword { $$ = $1; }
+ | func_name_keyword { $$ = $1; }
+ | reserved_keyword { $$ = $1; }
+ ;
+
+
+/*
* Keyword classification lists. Generally, every keyword present in
- * the Postgres grammar should be in one of these lists. (Presently,
- * "AS" is the sole exception: it is our only completely-reserved word.)
+ * the Postgres grammar should appear in exactly one of these lists.
*
- * Put a new keyword into the earliest list (of TypeFuncId, ColId, ColLabel)
- * that it can go into without creating shift or reduce conflicts. The
- * earlier lists define "less reserved" categories of keywords. Notice that
- * each list includes by reference the ones before it.
+ * Put a new keyword into the first list that it can go into without causing
+ * shift or reduce conflicts. The earlier lists define "less reserved"
+ * categories of keywords.
*/
-/* Type/func identifier --- names that can be type and function names
- * (as well as ColIds --- ie, these are completely unreserved keywords).
+/* "Unreserved" keywords --- available for use as any kind of name.
*/
-TypeFuncId: IDENT { $$ = $1; }
- | ABORT_TRANS { $$ = "abort"; }
+unreserved_keyword:
+ ABORT_TRANS { $$ = "abort"; }
| ABSOLUTE { $$ = "absolute"; }
| ACCESS { $$ = "access"; }
| ACTION { $$ = "action"; }
| ZONE { $$ = "zone"; }
;
-/* Column identifier --- names that can be column, table, etc names.
+/* Column identifier --- keywords that can be column, table, etc names.
*
- * This contains the TypeFuncId list plus those keywords that conflict
- * only with typename productions, not with other uses. Note that
- * most of these keywords will in fact be recognized as type names too;
- * they just have to have special productions for the purpose.
+ * Many of these keywords will in fact be recognized as type or function
+ * names too; but they have special productions for the purpose, and so
+ * can't be treated as "generic" type or function names.
*
- * Most of these cannot be in TypeFuncId (ie, are not also usable as function
- * names) because they can be followed by '(' in typename productions, which
- * looks too much like a function call for a LALR(1) parser.
+ * The type names appearing here are not usable as function names
+ * because they can be followed by '(' in typename productions, which
+ * looks too much like a function call for an LR(1) parser.
*/
-ColId: TypeFuncId { $$ = $1; }
- | BIT { $$ = "bit"; }
+col_name_keyword:
+ BIT { $$ = "bit"; }
| CHAR { $$ = "char"; }
| CHARACTER { $$ = "character"; }
+ | COALESCE { $$ = "coalesce"; }
| DEC { $$ = "dec"; }
| DECIMAL { $$ = "decimal"; }
+ | EXISTS { $$ = "exists"; }
+ | EXTRACT { $$ = "extract"; }
| FLOAT { $$ = "float"; }
| INTERVAL { $$ = "interval"; }
| NCHAR { $$ = "nchar"; }
| NONE { $$ = "none"; }
+ | NULLIF { $$ = "nullif"; }
| NUMERIC { $$ = "numeric"; }
+ | POSITION { $$ = "position"; }
| SETOF { $$ = "setof"; }
+ | SUBSTRING { $$ = "substring"; }
| TIME { $$ = "time"; }
| TIMESTAMP { $$ = "timestamp"; }
+ | TRIM { $$ = "trim"; }
| VARCHAR { $$ = "varchar"; }
;
-/* Column label --- allowed labels in "AS" clauses.
+/* Function identifier --- keywords that can be function names.
+ *
+ * Most of these are keywords that are used as operators in expressions;
+ * in general such keywords can't be column names because they would be
+ * ambiguous with variables, but they are unambiguous as function identifiers.
+ *
+ * Do not include POSITION, SUBSTRING, etc here since they have explicit
+ * productions in a_expr to support the goofy SQL9x argument syntax.
+ * - thomas 2000-11-28
+ */
+func_name_keyword:
+ BETWEEN { $$ = "between"; }
+ | BINARY { $$ = "binary"; }
+ | CROSS { $$ = "cross"; }
+ | FREEZE { $$ = "freeze"; }
+ | FULL { $$ = "full"; }
+ | ILIKE { $$ = "ilike"; }
+ | IN { $$ = "in"; }
+ | INNER_P { $$ = "inner"; }
+ | IS { $$ = "is"; }
+ | ISNULL { $$ = "isnull"; }
+ | JOIN { $$ = "join"; }
+ | LEFT { $$ = "left"; }
+ | LIKE { $$ = "like"; }
+ | NATURAL { $$ = "natural"; }
+ | NOTNULL { $$ = "notnull"; }
+ | OUTER_P { $$ = "outer"; }
+ | OVERLAPS { $$ = "overlaps"; }
+ | PUBLIC { $$ = "public"; }
+ | RIGHT { $$ = "right"; }
+ | VERBOSE { $$ = "verbose"; }
+ ;
+
+/* Reserved keyword --- these keywords are usable only as a ColLabel.
*
* Keywords appear here if they could not be distinguished from variable,
- * type, or function names in some contexts.
- * When adding a ColLabel, consider whether it can be added to func_name.
+ * type, or function names in some contexts. Don't put things here unless
+ * forced to.
*/
-ColLabel: ColId { $$ = $1; }
- | ALL { $$ = "all"; }
+reserved_keyword:
+ ALL { $$ = "all"; }
| ANALYSE { $$ = "analyse"; } /* British */
| ANALYZE { $$ = "analyze"; }
| AND { $$ = "and"; }
| ANY { $$ = "any"; }
+ | AS { $$ = "as"; }
| ASC { $$ = "asc"; }
- | BETWEEN { $$ = "between"; }
- | BINARY { $$ = "binary"; }
| BOTH { $$ = "both"; }
| CASE { $$ = "case"; }
| CAST { $$ = "cast"; }
| CHECK { $$ = "check"; }
- | COALESCE { $$ = "coalesce"; }
| COLLATE { $$ = "collate"; }
| COLUMN { $$ = "column"; }
| CONSTRAINT { $$ = "constraint"; }
- | CROSS { $$ = "cross"; }
| CURRENT_DATE { $$ = "current_date"; }
| CURRENT_TIME { $$ = "current_time"; }
| CURRENT_TIMESTAMP { $$ = "current_timestamp"; }
| ELSE { $$ = "else"; }
| END_TRANS { $$ = "end"; }
| EXCEPT { $$ = "except"; }
- | EXISTS { $$ = "exists"; }
- | EXTRACT { $$ = "extract"; }
| FALSE_P { $$ = "false"; }
| FOR { $$ = "for"; }
| FOREIGN { $$ = "foreign"; }
- | FREEZE { $$ = "freeze"; }
| FROM { $$ = "from"; }
- | FULL { $$ = "full"; }
| GROUP { $$ = "group"; }
| HAVING { $$ = "having"; }
- | ILIKE { $$ = "ilike"; }
- | IN { $$ = "in"; }
| INITIALLY { $$ = "initially"; }
- | INNER_P { $$ = "inner"; }
| INTERSECT { $$ = "intersect"; }
| INTO { $$ = "into"; }
- | IS { $$ = "is"; }
- | ISNULL { $$ = "isnull"; }
- | JOIN { $$ = "join"; }
| LEADING { $$ = "leading"; }
- | LEFT { $$ = "left"; }
- | LIKE { $$ = "like"; }
| LIMIT { $$ = "limit"; }
- | NATURAL { $$ = "natural"; }
| NEW { $$ = "new"; }
| NOT { $$ = "not"; }
- | NOTNULL { $$ = "notnull"; }
- | NULLIF { $$ = "nullif"; }
| NULL_P { $$ = "null"; }
| OFF { $$ = "off"; }
| OFFSET { $$ = "offset"; }
| ONLY { $$ = "only"; }
| OR { $$ = "or"; }
| ORDER { $$ = "order"; }
- | OUTER_P { $$ = "outer"; }
- | OVERLAPS { $$ = "overlaps"; }
- | POSITION { $$ = "position"; }
| PRIMARY { $$ = "primary"; }
- | PUBLIC { $$ = "public"; }
| REFERENCES { $$ = "references"; }
- | RIGHT { $$ = "right"; }
| SELECT { $$ = "select"; }
| SESSION_USER { $$ = "session_user"; }
| SOME { $$ = "some"; }
- | SUBSTRING { $$ = "substring"; }
| TABLE { $$ = "table"; }
| THEN { $$ = "then"; }
| TO { $$ = "to"; }
| TRAILING { $$ = "trailing"; }
- | TRIM { $$ = "trim"; }
| TRUE_P { $$ = "true"; }
| UNION { $$ = "union"; }
| UNIQUE { $$ = "unique"; }
| USER { $$ = "user"; }
| USING { $$ = "using"; }
- | VERBOSE { $$ = "verbose"; }
| WHEN { $$ = "when"; }
| WHERE { $$ = "where"; }
;
-/* Function identifier --- names that can be function names.
- *
- * This contains the TypeFuncId list plus some ColLabel keywords
- * that are used as operators in expressions; in general such keywords
- * can't be ColId because they would be ambiguous with variable names,
- * but they are unambiguous as function identifiers.
- *
- * Do not include POSITION, SUBSTRING, etc here since they have explicit
- * productions in a_expr to support the goofy SQL9x argument syntax.
- * - thomas 2000-11-28
- */
-func_name: TypeFuncId { $$ = xlateSqlFunc($1); }
- | BETWEEN { $$ = xlateSqlFunc("between"); }
- | BINARY { $$ = xlateSqlFunc("binary"); }
- | CROSS { $$ = xlateSqlFunc("cross"); }
- | FREEZE { $$ = xlateSqlFunc("freeze"); }
- | FULL { $$ = xlateSqlFunc("full"); }
- | ILIKE { $$ = xlateSqlFunc("ilike"); }
- | IN { $$ = xlateSqlFunc("in"); }
- | INNER_P { $$ = xlateSqlFunc("inner"); }
- | IS { $$ = xlateSqlFunc("is"); }
- | ISNULL { $$ = xlateSqlFunc("isnull"); }
- | JOIN { $$ = xlateSqlFunc("join"); }
- | LEFT { $$ = xlateSqlFunc("left"); }
- | LIKE { $$ = xlateSqlFunc("like"); }
- | NATURAL { $$ = xlateSqlFunc("natural"); }
- | NOTNULL { $$ = xlateSqlFunc("notnull"); }
- | OUTER_P { $$ = xlateSqlFunc("outer"); }
- | OVERLAPS { $$ = xlateSqlFunc("overlaps"); }
- | PUBLIC { $$ = xlateSqlFunc("public"); }
- | RIGHT { $$ = xlateSqlFunc("right"); }
- | VERBOSE { $$ = xlateSqlFunc("verbose"); }
- ;
SpecialRuleRelation: OLD
{
%type <str> key_match ColLabel SpecialRuleRelation ColId columnDef
%type <str> ColConstraint ColConstraintElem drop_type Bitconst
%type <str> OptTableElementList OptTableElement TableConstraint
-%type <str> ConstraintElem key_actions ColQualList TypeFuncId DropSchemaStmt
+%type <str> ConstraintElem key_actions ColQualList type_name DropSchemaStmt
%type <str> target_list target_el update_target_list alias_clause
%type <str> update_target_el opt_id relation_name database_name
%type <str> access_method attr_name class index_name name func_name
%type <str> struct_type s_struct declaration declarations variable_declarations
%type <str> s_union union_type ECPGSetAutocommit on_off
%type <str> ECPGAllocateDescr ECPGDeallocateDescr symbol opt_symbol
-%type <str> ECPGGetDescriptorHeader ECPGTypeFuncId ECPGColId ECPGColLabel
+%type <str> ECPGGetDescriptorHeader ECPGColLabel
+%type <str> reserved_keyword unreserved_keyword
+%type <str> col_name_keyword func_name_keyword
%type <str> ECPGTypeName variablelist cvariable
%type <descriptor> ECPGGetDescriptor
{
$$ = $1;
}
- | TypeFuncId '.' ColId '%' TYPE_P
+ | type_name '.' ColId '%' TYPE_P
{
$$ = cat_str(4, $1, make_str("."), $3, make_str("% type"));
}
| Character { $$ = $1; }
;
-Generic: TypeFuncId { $$ = $1; }
- | ECPGTypeName { $$ = $1; }
+Generic: type_name { $$ = $1; }
;
/* SQL92 numeric data types
/* some other stuff for ecpg */
-/* additional ColId entries */
-ECPGKeywords: SQL_BREAK { $$ = make_str("break"); }
- | SQL_CALL { $$ = make_str("call"); }
- | SQL_CARDINALITY { $$ = make_str("cardinality"); }
+/* additional unreserved keywords */
+ECPGKeywords: SQL_BREAK { $$ = make_str("break"); }
+ | SQL_CALL { $$ = make_str("call"); }
+ | SQL_CARDINALITY { $$ = make_str("cardinality"); }
| SQL_CONNECT { $$ = make_str("connect"); }
| SQL_CONTINUE { $$ = make_str("continue"); }
- | SQL_COUNT { $$ = make_str("count"); }
- | SQL_DATA { $$ = make_str("data"); }
+ | SQL_COUNT { $$ = make_str("count"); }
+ | SQL_DATA { $$ = make_str("data"); }
| SQL_DATETIME_INTERVAL_CODE { $$ = make_str("datetime_interval_code"); }
| SQL_DATETIME_INTERVAL_PRECISION { $$ = make_str("datetime_interval_precision"); }
| SQL_DEALLOCATE { $$ = make_str("deallocate"); }
| SQL_DISCONNECT { $$ = make_str("disconnect"); }
- | SQL_FOUND { $$ = make_str("found"); }
- | SQL_GO { $$ = make_str("go"); }
- | SQL_GOTO { $$ = make_str("goto"); }
+ | SQL_FOUND { $$ = make_str("found"); }
+ | SQL_GO { $$ = make_str("go"); }
+ | SQL_GOTO { $$ = make_str("goto"); }
| SQL_IDENTIFIED { $$ = make_str("identified"); }
| SQL_INDICATOR { $$ = make_str("indicator"); }
| SQL_KEY_MEMBER { $$ = make_str("key_member"); }
| SQL_LENGTH { $$ = make_str("length"); }
- | SQL_NAME { $$ = make_str("name"); }
+ | SQL_NAME { $$ = make_str("name"); }
| SQL_NULLABLE { $$ = make_str("nullable"); }
| SQL_OCTET_LENGTH { $$ = make_str("octet_length"); }
- | SQL_OPEN { $$ = make_str("open"); }
+ | SQL_OPEN { $$ = make_str("open"); }
| SQL_PREPARE { $$ = make_str("prepare"); }
| SQL_RELEASE { $$ = make_str("release"); }
| SQL_RETURNED_LENGTH { $$ = make_str("returned_length"); }
| SQL_RETURNED_OCTET_LENGTH { $$ = make_str("returned_octet_length"); }
- | SQL_SCALE { $$ = make_str("scale"); }
+ | SQL_SCALE { $$ = make_str("scale"); }
| SQL_SECTION { $$ = make_str("section"); }
| SQL_SQLERROR { $$ = make_str("sqlerror"); }
| SQL_SQLPRINT { $$ = make_str("sqlprint"); }
| SQL_SQLWARNING { $$ = make_str("sqlwarning"); }
- | SQL_STOP { $$ = make_str("stop"); }
- | SQL_VAR { $$ = make_str("var"); }
+ | SQL_STOP { $$ = make_str("stop"); }
+ | SQL_VAR { $$ = make_str("var"); }
| SQL_WHENEVER { $$ = make_str("whenever"); }
-/* | ECPGTypeName { $$ = $1 }*/
;
-ECPGTypeName: SQL_BOOL { $$ = make_str("bool"); }
- | SQL_INT { $$ = make_str("int"); }
- | SQL_LONG { $$ = make_str("long"); }
- | SQL_SHORT { $$ = make_str("short"); }
+/* additional keywords that can be SQL type names (but not ECPGColLabels) */
+ECPGTypeName: SQL_BOOL { $$ = make_str("bool"); }
+ | SQL_INT { $$ = make_str("int"); }
+ | SQL_LONG { $$ = make_str("long"); }
+ | SQL_SHORT { $$ = make_str("short"); }
| SQL_STRUCT { $$ = make_str("struct"); }
| SQL_SIGNED { $$ = make_str("signed"); }
| SQL_UNSIGNED { $$ = make_str("unsigned"); }
symbol: ColLabel { $$ = $1; };
/*
- * Keyword classification lists. Generally, every keyword present in
- * the Postgres grammar should be in one of these lists. (Presently,
- * "AS" is the sole exception: it is our only completely-reserved word.)
- *
- * Put a new keyword into the earliest list (of TypeFuncId, ColId, ColLabel)
- * that it can go into without creating shift or reduce conflicts. The
- * earlier lists define "less reserved" categories of keywords. Notice that
- * each list includes by reference the ones before it.
+ * Name classification hierarchy.
+ *
+ * IDENT is the lexeme returned by the lexer for identifiers that match
+ * no known keyword. In most cases, we can accept certain keywords as
+ * names, not only IDENTs. We prefer to accept as many such keywords
+ * as possible to minimize the impact of "reserved words" on programmers.
+ * So, we divide names into several possible classes. The classification
+ * is chosen in part to make keywords acceptable as names wherever possible.
+ */
+
+/* Column identifier --- names that can be column, table, etc names.
+ */
+ColId: ident { $$ = $1; }
+ | unreserved_keyword { $$ = $1; }
+ | col_name_keyword { $$ = $1; }
+ | ECPGKeywords { $$ = $1; }
+ | CHAR { $$ = make_str("char"); }
+ ;
+
+/* Type identifier --- names that can be type names.
+ */
+type_name: ident { $$ = $1; }
+ | unreserved_keyword { $$ = $1; }
+ | ECPGKeywords { $$ = $1; }
+ | ECPGTypeName { $$ = $1; }
+ ;
+
+/* Function identifier --- names that can be function names.
*/
+func_name: ident { $$ = $1; }
+ | unreserved_keyword { $$ = $1; }
+ | func_name_keyword { $$ = $1; }
+ | ECPGKeywords { $$ = $1; }
+ ;
-/* Type/func identifier --- names that can be type and function names
- * (as well as ColIds --- ie, these are completely unreserved keywords).
+/* Column label --- allowed labels in "AS" clauses.
+ * This presently includes *all* Postgres keywords.
*/
-TypeFuncId: ECPGTypeFuncId { $$ = $1; }
+ColLabel: ECPGColLabel { $$ = $1; }
+ | ECPGTypeName { $$ = $1; }
+ | CHAR { $$ = make_str("char"); }
+ | UNION { $$ = make_str("union"); }
+ ;
+
+ECPGColLabel: ident { $$ = $1; }
+ | unreserved_keyword { $$ = $1; }
+ | col_name_keyword { $$ = $1; }
+ | func_name_keyword { $$ = $1; }
+ | reserved_keyword { $$ = $1; }
| ECPGKeywords { $$ = $1; }
;
-ECPGTypeFuncId: ident { $$ = $1; }
- | ABORT_TRANS { $$ = make_str("abort"); }
+
+/*
+ * Keyword classification lists. Generally, every keyword present in
+ * the Postgres grammar should appear in exactly one of these lists.
+ *
+ * Put a new keyword into the first list that it can go into without causing
+ * shift or reduce conflicts. The earlier lists define "less reserved"
+ * categories of keywords.
+ */
+
+/* "Unreserved" keywords --- available for use as any kind of name.
+ */
+unreserved_keyword:
+ ABORT_TRANS { $$ = make_str("abort"); }
| ABSOLUTE { $$ = make_str("absolute"); }
| ACCESS { $$ = make_str("access"); }
| ACTION { $$ = make_str("action"); }
| ZONE { $$ = make_str("zone"); }
;
-/* Column identifier --- names that can be column, table, etc names.
+/* Column identifier --- keywords that can be column, table, etc names.
*
- * This contains the TypeFuncId list plus those keywords that conflict
- * only with typename productions, not with other uses. Note that
- * most of these keywords will in fact be recognized as type names too;
- * they just have to have special productions for the purpose.
+ * Many of these keywords will in fact be recognized as type or function
+ * names too; but they have special productions for the purpose, and so
+ * can't be treated as "generic" type or function names.
*
- * Most of these cannot be in TypeFuncId (ie, are not also usable as function
- * names) because they can be followed by '(' in typename productions, which
- * looks too much like a function call for a LALR(1) parser.
+ * The type names appearing here are not usable as function names
+ * because they can be followed by '(' in typename productions, which
+ * looks too much like a function call for an LR(1) parser.
*/
-ColId: ECPGColId { $$ = $1; }
- | CHAR { $$ = make_str("char"); }
- ;
-
-ECPGColId: TypeFuncId { $$ = $1; }
- | BIT { $$ = make_str("bit"); }
+col_name_keyword:
+ BIT { $$ = make_str("bit"); }
/* CHAR must be excluded from ECPGColLabel because of conflict with UNSIGNED
| CHAR { $$ = make_str("char"); }
*/
| CHARACTER { $$ = make_str("character"); }
+ | COALESCE { $$ = make_str("coalesce"); }
| DEC { $$ = make_str("dec"); }
| DECIMAL { $$ = make_str("decimal"); }
+ | EXISTS { $$ = make_str("exists"); }
+ | EXTRACT { $$ = make_str("extract"); }
| FLOAT { $$ = make_str("float"); }
| INTERVAL { $$ = make_str("interval"); }
| NCHAR { $$ = make_str("nchar"); }
| NONE { $$ = make_str("none"); }
+ | NULLIF { $$ = make_str("nullif"); }
| NUMERIC { $$ = make_str("numeric"); }
+ | POSITION { $$ = make_str("position"); }
| SETOF { $$ = make_str("setof"); }
+ | SUBSTRING { $$ = make_str("substring"); }
| TIME { $$ = make_str("time"); }
| TIMESTAMP { $$ = make_str("timestamp"); }
+ | TRIM { $$ = make_str("trim"); }
| VARCHAR { $$ = make_str("varchar"); }
;
-/* Column label --- allowed labels in "AS" clauses.
+/* Function identifier --- keywords that can be function names.
*
- * Keywords appear here if they could not be distinguished from variable,
- * type, or function names in some contexts.
- * When adding a ColLabel, consider whether it can be added to func_name.
+ * Most of these are keywords that are used as operators in expressions;
+ * in general such keywords can't be column names because they would be
+ * ambiguous with variables, but they are unambiguous as function identifiers.
+ *
+ * Do not include POSITION, SUBSTRING, etc here since they have explicit
+ * productions in a_expr to support the goofy SQL9x argument syntax.
+ * - thomas 2000-11-28
*/
-ColLabel: ECPGColLabel { $$ = $1; }
- | CHAR { $$ = make_str("char"); }
- | UNION { $$ = make_str("union"); }
+func_name_keyword:
+ BETWEEN { $$ = make_str("between"); }
+ | BINARY { $$ = make_str("binary"); }
+ | CROSS { $$ = make_str("cross"); }
+ | FREEZE { $$ = make_str("freeze"); }
+ | FULL { $$ = make_str("full"); }
+ | ILIKE { $$ = make_str("ilike"); }
+ | IN { $$ = make_str("in"); }
+ | INNER_P { $$ = make_str("inner"); }
+ | IS { $$ = make_str("is"); }
+ | ISNULL { $$ = make_str("isnull"); }
+ | JOIN { $$ = make_str("join"); }
+ | LEFT { $$ = make_str("left"); }
+ | LIKE { $$ = make_str("like"); }
+ | NATURAL { $$ = make_str("natural"); }
+ | NOTNULL { $$ = make_str("notnull"); }
+ | OUTER_P { $$ = make_str("outer"); }
+ | OVERLAPS { $$ = make_str("overlaps"); }
+ | PUBLIC { $$ = make_str("public"); }
+ | RIGHT { $$ = make_str("right"); }
+ | VERBOSE { $$ = make_str("verbose"); }
;
-ECPGColLabel: ECPGColId { $$ = $1; }
- | ALL { $$ = make_str("all"); }
+/* Reserved keyword --- these keywords are usable only as a ColLabel.
+ *
+ * Keywords appear here if they could not be distinguished from variable,
+ * type, or function names in some contexts. Don't put things here unless
+ * forced to.
+ */
+reserved_keyword:
+ ALL { $$ = make_str("all"); }
| ANALYSE { $$ = make_str("analyse"); } /* British */
| ANALYZE { $$ = make_str("analyze"); }
| AND { $$ = make_str("and"); }
| ANY { $$ = make_str("any"); }
+ | AS { $$ = make_str("as"); }
| ASC { $$ = make_str("asc"); }
- | BETWEEN { $$ = make_str("between"); }
- | BINARY { $$ = make_str("binary"); }
| BOTH { $$ = make_str("both"); }
| CASE { $$ = make_str("case"); }
| CAST { $$ = make_str("cast"); }
| CHECK { $$ = make_str("check"); }
- | COALESCE { $$ = make_str("coalesce"); }
| COLLATE { $$ = make_str("collate"); }
| COLUMN { $$ = make_str("column"); }
| CONSTRAINT { $$ = make_str("constraint"); }
- | CROSS { $$ = make_str("cross"); }
| CURRENT_DATE { $$ = make_str("current_date"); }
| CURRENT_TIME { $$ = make_str("current_time"); }
| CURRENT_TIMESTAMP { $$ = make_str("current_timestamp"); }
| ELSE { $$ = make_str("else"); }
| END_TRANS { $$ = make_str("end"); }
| EXCEPT { $$ = make_str("except"); }
- | EXISTS { $$ = make_str("exists"); }
- | EXTRACT { $$ = make_str("extract"); }
| FALSE_P { $$ = make_str("false"); }
| FOR { $$ = make_str("for"); }
| FOREIGN { $$ = make_str("foreign"); }
- | FREEZE { $$ = make_str("freeze"); }
| FROM { $$ = make_str("from"); }
- | FULL { $$ = make_str("full"); }
| GROUP { $$ = make_str("group"); }
| HAVING { $$ = make_str("having"); }
- | ILIKE { $$ = make_str("ilike"); }
- | IN { $$ = make_str("in"); }
| INITIALLY { $$ = make_str("initially"); }
- | INNER_P { $$ = make_str("inner"); }
| INTERSECT { $$ = make_str("intersect"); }
| INTO { $$ = make_str("into"); }
- | IS { $$ = make_str("is"); }
- | ISNULL { $$ = make_str("isnull"); }
- | JOIN { $$ = make_str("join"); }
| LEADING { $$ = make_str("leading"); }
- | LEFT { $$ = make_str("left"); }
- | LIKE { $$ = make_str("like"); }
| LIMIT { $$ = make_str("limit"); }
- | NATURAL { $$ = make_str("natural"); }
| NEW { $$ = make_str("new"); }
| NOT { $$ = make_str("not"); }
- | NOTNULL { $$ = make_str("notnull"); }
- | NULLIF { $$ = make_str("nullif"); }
| NULL_P { $$ = make_str("null"); }
| OFF { $$ = make_str("off"); }
| OFFSET { $$ = make_str("offset"); }
| ONLY { $$ = make_str("only"); }
| OR { $$ = make_str("or"); }
| ORDER { $$ = make_str("order"); }
- | OUTER_P { $$ = make_str("outer"); }
- | OVERLAPS { $$ = make_str("overlaps"); }
- | POSITION { $$ = make_str("position"); }
| PRIMARY { $$ = make_str("primary"); }
- | PUBLIC { $$ = make_str("public"); }
| REFERENCES { $$ = make_str("references"); }
- | RIGHT { $$ = make_str("right"); }
| SELECT { $$ = make_str("select"); }
| SESSION_USER { $$ = make_str("session_user"); }
| SOME { $$ = make_str("some"); }
- | SUBSTRING { $$ = make_str("substring"); }
| TABLE { $$ = make_str("table"); }
| THEN { $$ = make_str("then"); }
| TO { $$ = make_str("to"); }
| TRAILING { $$ = make_str("trailing"); }
- | TRIM { $$ = make_str("trim"); }
| TRUE_P { $$ = make_str("true"); }
/* UNION must be excluded from ECPGColLabel because of conflict with s_union
| UNION { $$ = make_str("union"); }
| UNIQUE { $$ = make_str("unique"); }
| USER { $$ = make_str("user"); }
| USING { $$ = make_str("using"); }
- | VERBOSE { $$ = make_str("verbose"); }
| WHEN { $$ = make_str("when"); }
| WHERE { $$ = make_str("where"); }
;
-/* Function identifier --- names that can be function names.
- *
- * This contains the TypeFuncId list plus some ColLabel keywords
- * that are used as operators in expressions; in general such keywords
- * can't be ColId because they would be ambiguous with variable names,
- * but they are unambiguous as function identifiers.
- *
- * Do not include POSITION, SUBSTRING, etc here since they have explicit
- * productions in a_expr to support the goofy SQL9x argument syntax.
- * - thomas 2000-11-28
- */
-func_name: TypeFuncId { $$ = $1; }
- | BETWEEN { $$ = make_str("between"); }
- | BINARY { $$ = make_str("binary"); }
- | CROSS { $$ = make_str("cross"); }
- | FREEZE { $$ = make_str("freeze"); }
- | FULL { $$ = make_str("full"); }
- | ILIKE { $$ = make_str("ilike"); }
- | IN { $$ = make_str("in"); }
- | INNER_P { $$ = make_str("inner"); }
- | IS { $$ = make_str("is"); }
- | ISNULL { $$ = make_str("isnull"); }
- | JOIN { $$ = make_str("join"); }
- | LEFT { $$ = make_str("left"); }
- | LIKE { $$ = make_str("like"); }
- | NATURAL { $$ = make_str("natural"); }
- | NOTNULL { $$ = make_str("notnull"); }
- | OUTER_P { $$ = make_str("outer"); }
- | OVERLAPS { $$ = make_str("overlaps"); }
- | PUBLIC { $$ = make_str("public"); }
- | RIGHT { $$ = make_str("right"); }
- | VERBOSE { $$ = make_str("verbose"); }
- ;
into_list : coutputvariable | into_list ',' coutputvariable;
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