Add keywords to implement Vadim's transaction isolation
and lock syntax as fully parsed tokens. Two keywords for isolation are non-reserved SQL92 (COMMITTED, SERIALIZABLE). All other new keywords are non-reserved Postgres (not SQL92) (ACCESS, EXCLUSIVE, MODE, SHARE). Add syntax to allow CREATE [GLOBAL|LOCAL] TEMPORARY TABLE, throwing an error if GLOBAL is specified.
This commit is contained in:
Thomas G. Lockhart
parent
3ce054b57d
commit
bcb5aac81d
@ -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 2.73 1999/05/11 03:28:42 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.74 1999/05/12 07:22:51 thomas Exp $
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*
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* HISTORY
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* AUTHOR DATE MAJOR EVENT
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@ -136,16 +136,17 @@ Oid param_type(int t); /* used in parse_expr.c */
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ClusterStmt, ExplainStmt, VariableSetStmt, VariableShowStmt, VariableResetStmt,
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CreateUserStmt, AlterUserStmt, DropUserStmt, RuleActionStmt
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%type <str> opt_database1, opt_database2, location, encoding
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%type <str> opt_database1, opt_database2, location, encoding
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%type <str> opt_lmode
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%type <ival> opt_lock, lock_type
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%type <boolean> opt_lmode
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%type <pboolean> user_createdb_clause, user_createuser_clause
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%type <str> user_passwd_clause
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%type <str> user_valid_clause
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%type <list> user_group_list, user_group_clause
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%type <str> user_passwd_clause
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%type <str> user_valid_clause
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%type <list> user_group_list, user_group_clause
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%type <boolean> TriggerActionTime, TriggerForSpec, PLangTrusted
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%type <boolean> TriggerActionTime, TriggerForSpec, PLangTrusted
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%type <str> TriggerEvents, TriggerFuncArg
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@ -157,6 +158,7 @@ Oid param_type(int t); /* used in parse_expr.c */
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all_Op, MathOp, opt_name, opt_unique,
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OptUseOp, opt_class, SpecialRuleRelation
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%type <str> opt_level
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%type <str> privileges, operation_commalist, grantee
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%type <chr> operation, TriggerOneEvent
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@ -175,7 +177,7 @@ Oid param_type(int t); /* used in parse_expr.c */
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%type <node> func_return
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%type <boolean> set_opt
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%type <boolean> TriggerForOpt, TriggerForType, OptTemp
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%type <boolean> TriggerForOpt, TriggerForType, OptTemp, OptTempType, OptTempScope
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%type <list> for_update_clause, update_list
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%type <boolean> opt_union
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@ -274,13 +276,13 @@ Oid param_type(int t); /* used in parse_expr.c */
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%token ABSOLUTE, ACTION, ADD, ALL, ALTER, AND, ANY, AS, ASC,
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BEGIN_TRANS, BETWEEN, BOTH, BY,
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CASCADE, CASE, CAST, CHAR, CHARACTER, CHECK, CLOSE,
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COALESCE, COLLATE, COLUMN, COMMIT,
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COALESCE, COLLATE, COLUMN, COMMIT,
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CONSTRAINT, CREATE, CROSS, CURRENT, CURRENT_DATE, CURRENT_TIME,
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CURRENT_TIMESTAMP, CURRENT_USER, CURSOR,
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DAY_P, DECIMAL, DECLARE, DEFAULT, DELETE, DESC, DISTINCT, DOUBLE, DROP,
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ELSE, END_TRANS, EXCEPT, EXECUTE, EXISTS, EXTRACT,
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FALSE_P, FETCH, FLOAT, FOR, FOREIGN, FROM, FULL,
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GRANT, GROUP, HAVING, HOUR_P,
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GLOBAL, GRANT, GROUP, HAVING, HOUR_P,
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IN, INNER_P, INSENSITIVE, INSERT, INTERSECT, INTERVAL, INTO, IS,
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ISOLATION, JOIN, KEY, LANGUAGE, LEADING, LEFT, LEVEL, LIKE, LOCAL,
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MATCH, MINUTE_P, MONTH_P, NAMES,
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@ -299,7 +301,7 @@ Oid param_type(int t); /* used in parse_expr.c */
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%token TRIGGER
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/* Keywords (in SQL92 non-reserved words) */
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%token TYPE_P
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%token COMMITTED, SERIALIZABLE, TYPE_P
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/* Keywords for Postgres support (not in SQL92 reserved words)
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*
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@ -307,17 +309,20 @@ Oid param_type(int t); /* used in parse_expr.c */
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* when some sort of pg_privileges relation is introduced.
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* - Todd A. Brandys 1998-01-01?
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*/
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%token ABORT_TRANS, AFTER, AGGREGATE, ANALYZE, BACKWARD, BEFORE, BINARY,
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%token ABORT_TRANS, ACCESS, AFTER, AGGREGATE, ANALYZE,
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BACKWARD, BEFORE, BINARY,
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CACHE, CLUSTER, COPY, CREATEDB, CREATEUSER, CYCLE,
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DATABASE, DELIMITERS, DO, EACH, ENCODING, EXPLAIN, EXTEND,
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DATABASE, DELIMITERS, DO,
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EACH, ENCODING, EXCLUSIVE, EXPLAIN, EXTEND,
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FORWARD, FUNCTION, HANDLER,
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INCREMENT, INDEX, INHERITS, INSTEAD, ISNULL,
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LANCOMPILER, LIMIT, LISTEN, LOAD, LOCATION, LOCK_P,
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MAXVALUE, MINVALUE, MOVE,
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MAXVALUE, MINVALUE, MODE, MOVE,
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NEW, NOCREATEDB, NOCREATEUSER, NONE, NOTHING, NOTIFY, NOTNULL,
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OFFSET, OIDS, OPERATOR, PASSWORD, PROCEDURAL,
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RENAME, RESET, RETURNS, ROW, RULE,
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SEQUENCE, SERIAL, SETOF, SHOW, START, STATEMENT, STDIN, STDOUT, TRUSTED,
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SEQUENCE, SERIAL, SETOF, SHARE, SHOW, START, STATEMENT, STDIN, STDOUT,
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TRUSTED,
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UNLISTEN, UNTIL, VACUUM, VALID, VERBOSE, VERSION
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/* Special keywords, not in the query language - see the "lex" file */
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@ -557,22 +562,11 @@ VariableSetStmt: SET ColId TO var_value
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n->value = $4;
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$$ = (Node *) n;
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}
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| SET TRANSACTION ISOLATION LEVEL READ ColId
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{
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VariableSetStmt *n = makeNode(VariableSetStmt);
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n->name = "XactIsoLevel";
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n->value = $6;
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if (strcasecmp(n->value, "COMMITTED"))
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elog(ERROR,"parser: syntax error at or near \"%s\"", n->value);
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$$ = (Node *) n;
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}
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| SET TRANSACTION ISOLATION LEVEL ColId
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| SET TRANSACTION ISOLATION LEVEL opt_level
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{
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VariableSetStmt *n = makeNode(VariableSetStmt);
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n->name = "XactIsoLevel";
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n->value = $5;
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if (strcasecmp(n->value, "SERIALIZABLE"))
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elog(ERROR,"parser: syntax error at or near \"%s\"", n->value);
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$$ = (Node *) n;
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}
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| SET NAMES encoding
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@ -588,6 +582,10 @@ VariableSetStmt: SET ColId TO var_value
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}
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;
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opt_level: READ COMMITTED { $$ = "committed"; }
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| SERIALIZABLE { $$ = "serializable"; }
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;
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var_value: Sconst { $$ = $1; }
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| DEFAULT { $$ = NULL; }
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;
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@ -767,12 +765,26 @@ CreateStmt: CREATE OptTemp TABLE relation_name '(' OptTableElementList ')'
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}
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;
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OptTemp:
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TEMP { $$ = TRUE; }
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OptTemp: OptTempType { $$ = $1; }
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| OptTempScope OptTempType { $$ = $2; }
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;
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OptTempType: TEMP { $$ = TRUE; }
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| TEMPORARY { $$ = TRUE; }
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| /*EMPTY*/ { $$ = FALSE; }
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;
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OptTempScope: GLOBAL
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{
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elog(ERROR, "GLOBAL TEMPORARY TABLE is not currently supported");
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$$ = TRUE;
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}
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| LOCAL
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{
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$$ = FALSE;
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}
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;
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OptTableElementList: OptTableElementList ',' OptTableElement
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{
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if ($3 != NULL)
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@ -2580,78 +2592,31 @@ DeleteStmt: DELETE FROM relation_name
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}
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;
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LockStmt: LOCK_P opt_table relation_name
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LockStmt: LOCK_P opt_table relation_name opt_lock
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{
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LockStmt *n = makeNode(LockStmt);
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n->relname = $3;
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n->mode = AccessExclusiveLock;
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$$ = (Node *)n;
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}
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| LOCK_P opt_table relation_name IN opt_lmode ROW IDENT IDENT
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{
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LockStmt *n = makeNode(LockStmt);
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n->relname = $3;
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if (strcasecmp($8, "MODE"))
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elog(ERROR,"parser: syntax error at or near \"%s\"", $8);
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if ($5 != NULL)
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{
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if (strcasecmp($5, "SHARE"))
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elog(ERROR,"parser: syntax error at or near \"%s\"", $5);
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if (strcasecmp($7, "EXCLUSIVE"))
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elog(ERROR,"parser: syntax error at or near \"%s\"", $7);
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n->mode = ShareRowExclusiveLock;
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}
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else
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{
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if (strcasecmp($7, "SHARE") == 0)
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n->mode = RowShareLock;
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else if (strcasecmp($7, "EXCLUSIVE") == 0)
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n->mode = RowExclusiveLock;
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else
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elog(ERROR,"parser: syntax error at or near \"%s\"", $7);
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}
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$$ = (Node *)n;
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}
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| LOCK_P opt_table relation_name IN IDENT IDENT IDENT
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{
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LockStmt *n = makeNode(LockStmt);
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n->relname = $3;
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if (strcasecmp($7, "MODE"))
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elog(ERROR,"parser: syntax error at or near \"%s\"", $7);
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if (strcasecmp($5, "ACCESS"))
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elog(ERROR,"parser: syntax error at or near \"%s\"", $5);
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if (strcasecmp($6, "SHARE") == 0)
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n->mode = AccessShareLock;
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else if (strcasecmp($6, "EXCLUSIVE") == 0)
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n->mode = AccessExclusiveLock;
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else
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elog(ERROR,"parser: syntax error at or near \"%s\"", $6);
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$$ = (Node *)n;
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}
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| LOCK_P opt_table relation_name IN IDENT IDENT
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{
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LockStmt *n = makeNode(LockStmt);
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n->relname = $3;
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if (strcasecmp($6, "MODE"))
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elog(ERROR,"parser: syntax error at or near \"%s\"", $6);
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if (strcasecmp($5, "SHARE") == 0)
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n->mode = ShareLock;
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else if (strcasecmp($5, "EXCLUSIVE") == 0)
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n->mode = ExclusiveLock;
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else
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elog(ERROR,"parser: syntax error at or near \"%s\"", $5);
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n->mode = $4;
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$$ = (Node *)n;
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}
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;
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opt_lmode: IDENT { $$ = $1; }
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| /*EMPTY*/ { $$ = NULL; }
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opt_lock: lock_type MODE { $$ = $1; }
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| /*EMPTY*/ { $$ = AccessExclusiveLock; }
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;
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lock_type: SHARE ROW EXCLUSIVE { $$ = ShareRowExclusiveLock; }
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| ROW opt_lmode { $$ = ($2? RowShareLock: RowExclusiveLock); }
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| ACCESS opt_lmode { $$ = ($2? AccessShareLock: AccessExclusiveLock); }
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| opt_lmode { $$ = ($1? ShareLock: ExclusiveLock); }
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;
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opt_lmode: SHARE { $$ = TRUE; }
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| EXCLUSIVE { $$ = FALSE; }
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;
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/*****************************************************************************
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*
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* QUERY:
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@ -5173,12 +5138,14 @@ TypeId: ColId
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ColId: IDENT { $$ = $1; }
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| datetime { $$ = $1; }
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| ABSOLUTE { $$ = "absolute"; }
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| ACCESS { $$ = "access"; }
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| ACTION { $$ = "action"; }
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| AFTER { $$ = "after"; }
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| AGGREGATE { $$ = "aggregate"; }
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| BACKWARD { $$ = "backward"; }
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| BEFORE { $$ = "before"; }
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| CACHE { $$ = "cache"; }
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| COMMITTED { $$ = "committed"; }
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| CREATEDB { $$ = "createdb"; }
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| CREATEUSER { $$ = "createuser"; }
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| CYCLE { $$ = "cycle"; }
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@ -5187,6 +5154,7 @@ ColId: IDENT { $$ = $1; }
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| DOUBLE { $$ = "double"; }
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| EACH { $$ = "each"; }
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| ENCODING { $$ = "encoding"; }
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| EXCLUSIVE { $$ = "exclusive"; }
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| FORWARD { $$ = "forward"; }
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| FUNCTION { $$ = "function"; }
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| HANDLER { $$ = "handler"; }
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@ -5203,6 +5171,7 @@ ColId: IDENT { $$ = $1; }
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| MATCH { $$ = "match"; }
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| MAXVALUE { $$ = "maxvalue"; }
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| MINVALUE { $$ = "minvalue"; }
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| MODE { $$ = "mode"; }
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| NEXT { $$ = "next"; }
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| NOCREATEDB { $$ = "nocreatedb"; }
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| NOCREATEUSER { $$ = "nocreateuser"; }
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@ -5226,6 +5195,8 @@ ColId: IDENT { $$ = $1; }
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| SCROLL { $$ = "scroll"; }
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| SEQUENCE { $$ = "sequence"; }
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| SERIAL { $$ = "serial"; }
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| SERIALIZABLE { $$ = "serializable"; }
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| SHARE { $$ = "share"; }
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| START { $$ = "start"; }
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| STATEMENT { $$ = "statement"; }
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| STDIN { $$ = "stdin"; }
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@ -5269,9 +5240,11 @@ ColLabel: ColId { $$ = $1; }
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| EXTEND { $$ = "extend"; }
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| FALSE_P { $$ = "false"; }
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| FOREIGN { $$ = "foreign"; }
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| GLOBAL { $$ = "global"; }
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| GROUP { $$ = "group"; }
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| LISTEN { $$ = "listen"; }
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| LOAD { $$ = "load"; }
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| LOCAL { $$ = "local"; }
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| LOCK_P { $$ = "lock"; }
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| MOVE { $$ = "move"; }
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| NEW { $$ = "new"; }
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@ -7,7 +7,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/parser/keywords.c,v 1.56 1999/04/19 16:00:18 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/parser/keywords.c,v 1.57 1999/05/12 07:22:52 thomas Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -31,6 +31,7 @@ static ScanKeyword ScanKeywords[] = {
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/* name, value */
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{"abort", ABORT_TRANS},
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{"absolute", ABSOLUTE},
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{"access", ACCESS},
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{"action", ACTION},
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{"add", ADD},
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{"after", AFTER},
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@ -62,6 +63,7 @@ static ScanKeyword ScanKeywords[] = {
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{"collate", COLLATE},
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{"column", COLUMN},
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{"commit", COMMIT},
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{"committed", COMMITTED},
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{"constraint", CONSTRAINT},
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{"copy", COPY},
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{"create", CREATE},
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@ -92,7 +94,7 @@ static ScanKeyword ScanKeywords[] = {
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{"end", END_TRANS},
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/***S*I***/
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{"except", EXCEPT},
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{"exclusive", EXCLUSIVE},
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{"execute", EXECUTE},
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{"exists", EXISTS},
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{"explain", EXPLAIN},
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@ -107,6 +109,7 @@ static ScanKeyword ScanKeywords[] = {
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{"from", FROM},
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{"full", FULL},
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{"function", FUNCTION},
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{"global", GLOBAL},
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{"grant", GRANT},
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{"group", GROUP},
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{"handler", HANDLER},
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@ -122,7 +125,6 @@ static ScanKeyword ScanKeywords[] = {
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{"instead", INSTEAD},
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/***S*I***/
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{"intersect", INTERSECT},
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{"interval", INTERVAL},
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{"into", INTO},
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{"is", IS},
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@ -146,6 +148,7 @@ static ScanKeyword ScanKeywords[] = {
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{"maxvalue", MAXVALUE},
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{"minute", MINUTE_P},
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{"minvalue", MINVALUE},
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{"mode", MODE},
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{"month", MONTH_P},
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{"move", MOVE},
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{"names", NAMES},
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@ -202,8 +205,10 @@ static ScanKeyword ScanKeywords[] = {
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{"select", SELECT},
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{"sequence", SEQUENCE},
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{"serial", SERIAL},
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{"serializable", SERIALIZABLE},
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{"set", SET},
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{"setof", SETOF},
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{"share", SHARE},
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{"show", SHOW},
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{"start", START},
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{"statement", STATEMENT},
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