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Allow multiple-argument functions in constraint clauses.
Formerly allowed only single arguments. Declare column constraints using the usual list mechanism rather than explicit itemized lists. Remove NOTNULL from default clause syntax (retain "NOT NULL"). NOTNULL is not SQL92; eventually remove it from expressions too? Move ISNULL, NOTNULL to Postgres-specific token declarations. Fix up tabs and indenting on new CREATE USER commands.
This commit is contained in:
Thomas G. Lockhart
@ -10,7 +10,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 1.78 1997/12/06 22:56:42 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 1.79 1997/12/16 15:50:54 thomas Exp $
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*
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* HISTORY
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* AUTHOR DATE MAJOR EVENT
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@ -212,9 +212,9 @@ Oid param_type(int t); /* used in parse_expr.c */
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%type <str> ColId, ColLabel
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%type <node> TableConstraint
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%type <list> constraint_expr
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%type <list> default_expr
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%type <list> ColQualList
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%type <list> constraint_list, constraint_expr
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%type <list> default_list, default_expr
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%type <list> ColQualList, ColQualifier
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%type <node> ColConstraint, ColConstraintElem
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%type <list> key_actions, key_action
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%type <str> key_match, key_reference
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@ -247,7 +247,7 @@ Oid param_type(int t); /* used in parse_expr.c */
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IN, INNER_P, INSERT, INTERVAL, INTO, IS,
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JOIN, KEY, LANGUAGE, LEADING, LEFT, LIKE, LOCAL,
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MATCH, MINUTE_P, MONTH_P,
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NATIONAL, NATURAL, NCHAR, NO, NOT, NOTIFY, NOTNULL, NULL_P, NUMERIC,
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NATIONAL, NATURAL, NCHAR, NO, NOT, NOTIFY, NULL_P, NUMERIC,
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ON, OPTION, OR, ORDER, OUTER_P,
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PARTIAL, POSITION, PRECISION, PRIMARY, PRIVILEGES, PROCEDURE, PUBLIC,
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REFERENCES, REVOKE, RIGHT, ROLLBACK,
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@ -270,7 +270,7 @@ Oid param_type(int t); /* used in parse_expr.c */
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FORWARD, FUNCTION, HANDLER,
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INDEX, INHERITS, INSTEAD, ISNULL,
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LANCOMPILER, LISTEN, LOAD, LOCATION, MERGE, MOVE,
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NEW, NONE, NOTHING, OIDS, OPERATOR, PROCEDURAL,
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NEW, NONE, NOTHING, NOTNULL, OIDS, OPERATOR, PROCEDURAL,
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RECIPE, RENAME, REPLACE, RESET, RETRIEVE, RETURNS, RULE,
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SEQUENCE, SETOF, SHOW, STDIN, STDOUT, TRUSTED,
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VACUUM, VERBOSE, VERSION
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@ -379,18 +379,15 @@ stmt : AddAttrStmt
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/*****************************************************************************
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*
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* Create a new postresql DBMS user
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* Create a new Postgres DBMS user
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*
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*
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*****************************************************************************/
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CreateUserStmt: CREATE USER Id
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user_passwd_clause
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user_createdb_clause
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user_createuser_clause
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user_group_clause
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user_valid_clause
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{ CreateUserStmt *n = makeNode(CreateUserStmt);
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CreateUserStmt: CREATE USER Id user_passwd_clause user_createdb_clause
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user_createuser_clause user_group_clause user_valid_clause
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{
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CreateUserStmt *n = makeNode(CreateUserStmt);
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n->user = $3;
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n->password = $4;
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n->createdb = $5;
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@ -408,13 +405,10 @@ CreateUserStmt: CREATE USER Id
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*
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*****************************************************************************/
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AlterUserStmt: ALTER USER Id
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user_passwd_clause
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user_createdb_clause
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user_createuser_clause
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user_group_clause
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user_valid_clause
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{ AlterUserStmt *n = makeNode(AlterUserStmt);
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AlterUserStmt: ALTER USER Id user_passwd_clause user_createdb_clause
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user_createuser_clause user_group_clause user_valid_clause
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{
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AlterUserStmt *n = makeNode(AlterUserStmt);
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n->user = $3;
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n->password = $4;
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n->createdb = $5;
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@ -433,7 +427,8 @@ AlterUserStmt: ALTER USER Id
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*****************************************************************************/
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DropUserStmt: DROP USER Id
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{ DropUserStmt *n = makeNode(DropUserStmt);
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{
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DropUserStmt *n = makeNode(DropUserStmt);
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n->user = $3;
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$$ = (Node *)n;
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}
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@ -443,30 +438,44 @@ user_passwd_clause: WITH PASSWORD Id { $$ = $3; }
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| /*EMPTY*/ { $$ = NULL; }
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;
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user_createdb_clause: CREATEDB { bool* b;
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user_createdb_clause: CREATEDB
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{
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bool* b;
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$$ = (b = (bool*)palloc(sizeof(bool)));
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*b = true;
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}
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| NOCREATEDB { bool* b;
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| NOCREATEDB
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{
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bool* b;
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$$ = (b = (bool*)palloc(sizeof(bool)));
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*b = false;
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}
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| /*EMPTY*/ { $$ = NULL; }
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;
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user_createuser_clause: CREATEUSER { bool* b;
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user_createuser_clause: CREATEUSER
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{
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bool* b;
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$$ = (b = (bool*)palloc(sizeof(bool)));
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*b = true;
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}
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| NOCREATEUSER { bool* b;
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| NOCREATEUSER
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{
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bool* b;
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$$ = (b = (bool*)palloc(sizeof(bool)));
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*b = false;
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}
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| /*EMPTY*/ { $$ = NULL; }
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;
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user_group_list: user_group_list ',' Id { $$ = lcons((void*)makeString($3), $1); }
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| Id { $$ = makeList((void*)makeString($1), NULL); }
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user_group_list: user_group_list ',' Id
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{
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$$ = lcons((void*)makeString($3), $1);
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}
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| Id
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{
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$$ = lcons((void*)makeString($1), NIL);
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}
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;
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user_group_clause: IN GROUP user_group_list { $$ = $3; }
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@ -685,7 +694,7 @@ OptTableElement: columnDef { $$ = $1; }
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| TableConstraint { $$ = $1; }
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;
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columnDef: ColId Typename ColQualList
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columnDef: ColId Typename ColQualifier
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{
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ColumnDef *n = makeNode(ColumnDef);
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n->colname = $1;
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@ -697,22 +706,14 @@ columnDef: ColId Typename ColQualList
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}
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;
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/* ColQualList decodes column-specific qualifiers.
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* Seem to need to specify the explicit combinations
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* to eliminate reduce/reduce conflicts.
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* I think this is because there are no explicit delimiters
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* (like commas) between clauses.
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* - thomas 1997-12-03
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*/
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ColQualList: ColConstraint ColConstraint ColConstraint ColConstraint
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{ $$ = lappend(lappend(lappend(lcons($1, NIL), $2), $3), $4); }
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| ColConstraint ColConstraint ColConstraint
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{ $$ = lappend(lappend(lcons($1, NIL), $2), $3); }
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| ColConstraint ColConstraint { $$ = lappend(lcons($1, NIL), $2); }
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| ColConstraint { $$ = lcons($1, NIL); }
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ColQualifier: ColQualList { $$ = $1; }
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| /*EMPTY*/ { $$ = NULL; }
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;
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ColQualList: ColQualList ColConstraint { $$ = lappend($1,$2); }
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| ColConstraint { $$ = lcons($1, NIL); }
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;
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ColConstraint:
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CONSTRAINT name ColConstraintElem
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{
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@ -751,15 +752,6 @@ ColConstraintElem: CHECK '(' constraint_expr ')'
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n->keys = NULL;
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$$ = (Node *)n;
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}
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| NOTNULL
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{
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Constraint *n = makeNode(Constraint);
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n->contype = CONSTR_NOTNULL;
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n->name = NULL;
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n->def = NULL;
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n->keys = NULL;
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$$ = (Node *)n;
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}
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| UNIQUE
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{
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Constraint *n = makeNode(Constraint);
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@ -785,6 +777,17 @@ ColConstraintElem: CHECK '(' constraint_expr ')'
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}
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;
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default_list: default_list ',' default_expr
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{
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$$ = lappend($1,makeString(","));
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$$ = nconc($$, $3);
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}
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| default_expr
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{
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$$ = $1;
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}
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;
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default_expr: AexprConst
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{ $$ = makeConstantList((A_Const *) $1); }
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| NULL_P
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@ -823,17 +826,17 @@ default_expr: AexprConst
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}
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| '(' default_expr ')'
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{ $$ = lappend( lcons( makeString( "("), $2), makeString( ")")); }
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| name '(' default_expr ')'
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{
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$$ = makeList( makeString($1), makeString("("), -1);
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$$ = nconc( $$, $3);
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$$ = lappend( $$, makeString(")"));
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}
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| name '(' ')'
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{
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$$ = makeList( makeString($1), makeString("("), -1);
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$$ = lappend( $$, makeString(")"));
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}
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| name '(' default_list ')'
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{
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$$ = makeList( makeString($1), makeString("("), -1);
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$$ = nconc( $$, $3);
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$$ = lappend( $$, makeString(")"));
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}
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| default_expr Op default_expr
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{
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if (!strcmp("<=", $2) || !strcmp(">=", $2))
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@ -911,6 +914,17 @@ ConstraintElem: CHECK '(' constraint_expr ')'
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{ elog(NOTICE,"CREATE TABLE/FOREIGN KEY clause ignored; not yet implemented",NULL); }
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;
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constraint_list: constraint_list ',' constraint_expr
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{
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$$ = lappend($1,makeString(","));
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$$ = nconc($$, $3);
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}
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| constraint_expr
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{
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$$ = $1;
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}
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;
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constraint_expr: AexprConst
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{ $$ = makeConstantList((A_Const *) $1); }
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| NULL_P
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@ -953,7 +967,12 @@ constraint_expr: AexprConst
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}
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| '(' constraint_expr ')'
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{ $$ = lappend( lcons( makeString( "("), $2), makeString( ")")); }
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| name '(' constraint_expr ')'
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| name '(' ')'
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{
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$$ = makeList( makeString($1), makeString("("), -1);
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$$ = lappend( $$, makeString(")"));
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}
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| name '(' constraint_list ')'
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{
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$$ = makeList( makeString($1), makeString("("), -1);
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$$ = nconc( $$, $3);
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@ -2867,6 +2886,13 @@ a_expr: attr opt_indirection
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n->args = NIL;
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$$ = (Node *)n;
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}
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| name '(' expr_list ')'
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{
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FuncCall *n = makeNode(FuncCall);
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n->funcname = $1;
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n->args = $3;
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$$ = (Node *)n;
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}
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| CURRENT_DATE
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{
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A_Const *n = makeNode(A_Const);
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@ -3018,13 +3044,6 @@ a_expr: attr opt_indirection
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n->args = $3;
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$$ = (Node *)n;
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}
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| name '(' expr_list ')'
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{
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FuncCall *n = makeNode(FuncCall);
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n->funcname = $1;
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n->args = $3;
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$$ = (Node *)n;
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}
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| a_expr ISNULL
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{ $$ = makeA_Expr(ISNULL, NULL, $1, NULL); }
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| a_expr IS NULL_P
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@ -3202,6 +3221,13 @@ position_expr: attr opt_indirection
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n->args = NIL;
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$$ = (Node *)n;
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}
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| name '(' expr_list ')'
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{
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FuncCall *n = makeNode(FuncCall);
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n->funcname = $1;
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n->args = $3;
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$$ = (Node *)n;
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}
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| POSITION '(' position_list ')'
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{
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FuncCall *n = makeNode(FuncCall);
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@ -3245,13 +3271,6 @@ position_expr: attr opt_indirection
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n->args = $3;
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$$ = (Node *)n;
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}
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| name '(' expr_list ')'
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{
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FuncCall *n = makeNode(FuncCall);
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n->funcname = $1;
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n->args = $3;
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$$ = (Node *)n;
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}
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;
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substr_list: expr_list substr_from substr_for
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