mirror of https://github.com/postgres/postgres
Add ^ precidence.
This commit is contained in:
Bruce Momjian
parent
38ff52c379
commit
104d6c816e
23
doc/TODO
23
doc/TODO
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@ -29,8 +29,10 @@ PARSER
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* Select a[1] FROM test fails, it needs test.a[1]
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* Array index references without table name cause problems
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* Update table SET table.value = 3 fails
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* Creating index of timestamp fails
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* Creating index of TIMESTAMP fails, rename to DATETIME(Thomas)
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* SELECT foo UNION SELECT foo is incorrectly simplified to SELECT foo
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* INSERT ... SELECT ... GROUP BY groups by target columns not source columns
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* CREATE TABLE test (a char(5) DEFAULT text '', b int4) fails on INSERT
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VIEWS
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@ -80,7 +82,8 @@ TYPES
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* Large objects
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o Fix large object mapping scheme, own typeid or reltype(Peter)
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o Allow large text type to use large objects(Peter)
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o Not to stuff everything as files in a single directory
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o Not to stuff everything as files in a single directory, hash dirs
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o Allow large object vacuuming
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* Allow pg_descriptions when creating types, tables, columns, and functions
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* Add IPv6 capability to INET/CIDR types
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* Make a separate SERIAL type?
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@ -90,6 +93,7 @@ TYPES
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* Allow LOCALE on a per-column basis, default to ASCII
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* Allow array on int8[]
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* Remove Money type, add money formatting for decimal type
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* Fix typein/out functions to not be user-callable
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VIEWS
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@ -132,6 +136,7 @@ CLIENTS
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* Allow psql \copy to allow delimiters
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* Add a function to return the last inserted oid, for use in psql scripts
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* Allow psql to print nulls as distinct from ""(?)
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* PQrequestCancel() be able to terminate backend waiting for lock
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MISC
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@ -182,17 +187,23 @@ INDEXES
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a matching index
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* Improve LIMIT processing by using index to limit rows processed
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* Have optimizer take LIMIT into account when considering index scans
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* Make index creation use psort code, because it is now faster(Vadim)
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* Create more system table indexes for faster cache lookups
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* fix indexscan() so it does leak memory by not requiring caller to free
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* Improve _bt_binsrch() to handle equal keys better, remove _bt_firsteq()(Tom)
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CACHE
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* Cache most recent query plan(s?)
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* Shared catalog cache, reduce lseek()'s by caching table size in shared area
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* elog() flushes cache, try invalidating just entries from current xact,
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perhaps using invalidation cache
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MISC
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* Allow compression of log and meta data
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* Update pg_statistic table to remove operator column
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* Make index creation use psort code, because it is now faster(Vadim)
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* Allow char() not to use variable-sized header to reduce disk size
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* Do async I/O to do better read-ahead of data
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* Fix memory exhaustion when using many OR's
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@ -201,15 +212,15 @@ MISC
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* Use mmap() rather than SYSV shared memory(?)
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* Process const = const parts of OR clause in separate pass
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* Make oid use oidin/oidout not int4in/int4out in pg_type.h
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* Create more system table indexes for faster cache lookups
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* Improve Subplan list handling
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* Allow Subplans to use efficient joins(hash, merge) with upper variable
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* use fmgr_info()/fmgr_faddr() instead of fmgr() calls in high-traffic
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places, like GROUP BY, UNIQUE, index processing, etc.
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* improve dynamic memory allocation by introducing tuple-context memory
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allocation
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* fix indexscan() so it does leak memory by not requiring caller to free
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* fix memory leak in cache code when non-existant table is refer
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* fix memory leak in cache code when non-existant table is referenced
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* In WHERE x=3 AND x=y, add y=3
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* pass atttypmod through parser in more cases(Bruce)
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SOURCE CODE
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-----------
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@ -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 2.86 1999/07/04 04:55:59 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.87 1999/07/08 00:00:42 momjian Exp $
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*
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* HISTORY
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* AUTHOR DATE MAJOR EVENT
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@ -349,7 +349,7 @@ Oid param_type(int t); /* used in parse_expr.c */
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%nonassoc NULL_P
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%nonassoc IS
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%left '+' '-'
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%left '*' '/' '%'
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%left '*' '/' '%' '^'
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%left '|' /* this is the relation union op, not logical or */
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/* Unary Operators */
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%right ':'
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@ -973,6 +973,8 @@ default_expr: AexprConst
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{ $$ = nconc( $1, lcons( makeString( "%"), $3)); }
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| default_expr '*' default_expr
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{ $$ = nconc( $1, lcons( makeString( "*"), $3)); }
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| default_expr '^' default_expr
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{ $$ = nconc( $1, lcons( makeString( "^"), $3)); }
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| default_expr '=' default_expr
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{ elog(ERROR,"boolean expressions not supported in DEFAULT"); }
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| default_expr '<' default_expr
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@ -1121,6 +1123,8 @@ constraint_expr: AexprConst
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{ $$ = nconc( $1, lcons( makeString( "%"), $3)); }
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| constraint_expr '*' constraint_expr
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{ $$ = nconc( $1, lcons( makeString( "*"), $3)); }
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| constraint_expr '^' constraint_expr
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{ $$ = nconc( $1, lcons( makeString( "^"), $3)); }
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| constraint_expr '=' constraint_expr
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{ $$ = nconc( $1, lcons( makeString( "="), $3)); }
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| constraint_expr '<' constraint_expr
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@ -3641,8 +3645,12 @@ a_expr: attr opt_indirection
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{ $$ = doNegate($2); }
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| '%' a_expr
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{ $$ = makeA_Expr(OP, "%", NULL, $2); }
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| '^' a_expr
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{ $$ = makeA_Expr(OP, "^", NULL, $2); }
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| a_expr '%'
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{ $$ = makeA_Expr(OP, "%", $1, NULL); }
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| a_expr '^'
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{ $$ = makeA_Expr(OP, "^", $1, NULL); }
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| a_expr '+' a_expr
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{ $$ = makeA_Expr(OP, "+", $1, $3); }
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| a_expr '-' a_expr
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@ -3653,6 +3661,8 @@ a_expr: attr opt_indirection
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{ $$ = makeA_Expr(OP, "%", $1, $3); }
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| a_expr '*' a_expr
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{ $$ = makeA_Expr(OP, "*", $1, $3); }
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| a_expr '^' a_expr
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{ $$ = makeA_Expr(OP, "^", $1, $3); }
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| a_expr '<' a_expr
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{ $$ = makeA_Expr(OP, "<", $1, $3); }
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| a_expr '>' a_expr
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@ -4302,8 +4312,12 @@ b_expr: attr opt_indirection
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{ $$ = doNegate($2); }
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| '%' b_expr
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{ $$ = makeA_Expr(OP, "%", NULL, $2); }
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| '^' b_expr
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{ $$ = makeA_Expr(OP, "^", NULL, $2); }
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| b_expr '%'
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{ $$ = makeA_Expr(OP, "%", $1, NULL); }
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| b_expr '^'
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{ $$ = makeA_Expr(OP, "^", $1, NULL); }
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| b_expr '+' b_expr
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{ $$ = makeA_Expr(OP, "+", $1, $3); }
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| b_expr '-' b_expr
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@ -4312,6 +4326,8 @@ b_expr: attr opt_indirection
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{ $$ = makeA_Expr(OP, "/", $1, $3); }
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| b_expr '%' b_expr
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{ $$ = makeA_Expr(OP, "%", $1, $3); }
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| b_expr '^' b_expr
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{ $$ = makeA_Expr(OP, "^", $1, $3); }
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| b_expr '*' b_expr
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{ $$ = makeA_Expr(OP, "*", $1, $3); }
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| ':' b_expr
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@ -8,7 +8,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/parser/scan.l,v 1.49 1999/05/12 07:12:51 thomas Exp $
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* $Header: /cvsroot/pgsql/src/backend/parser/scan.l,v 1.50 1999/07/08 00:00:43 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -155,7 +155,7 @@ identifier {letter}{letter_or_digit}*
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typecast "::"
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self [,()\[\].;$\:\+\-\*\/\%\<\>\=\|]
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self [,()\[\].;$\:\+\-\*\/\%\^\<\>\=\|]
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op_and_self [\~\!\@\#\^\&\|\`\?\$\:\+\-\*\/\%\<\>\=]
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operator {op_and_self}+
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