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postgres/src/include/catalog/heap.h

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More cleanups of the include files - centralizing to simplify the -I's required to compile
30 years ago
/*-------------------------------------------------------------------------
*
Change my-function-name-- to my_function_name, and optimizer renames.
27 years ago
* heap.h
Massive commit to run PGINDENT on all *.c and *.h files.
29 years ago
* prototypes for functions in lib/catalog/heap.c
More cleanups of the include files - centralizing to simplify the -I's required to compile
30 years ago
*
*
Change Copyright from PostgreSQL, Inc to PostgreSQL Global Development Group.
25 years ago
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
Add: * Portions Copyright (c) 1996-2000, PostgreSQL, Inc to all files copyright Regents of Berkeley. Man, that's a lot of files.
26 years ago
* Portions Copyright (c) 1994, Regents of the University of California
More cleanups of the include files - centralizing to simplify the -I's required to compile
30 years ago
*
Change Copyright from PostgreSQL, Inc to PostgreSQL Global Development Group.
25 years ago
* $Id: heap.h,v 1.33 2001/01/24 19:43:20 momjian Exp $
More cleanups of the include files - centralizing to simplify the -I's required to compile
30 years ago
*
*-------------------------------------------------------------------------
*/
#ifndef HEAP_H
#define HEAP_H
Change #include's to use <> and "" as appropriate.
27 years ago
#include "utils/rel.h"
clean this one
30 years ago
Reimplement parsing and storage of default expressions and constraint expressions in CREATE TABLE. There is no longer an emasculated expression syntax for these things; it's full a_expr for constraints, and b_expr for defaults (unfortunately the fact that NOT NULL is a part of the column constraint syntax causes a shift/reduce conflict if you try a_expr. Oh well --- at least parenthesized boolean expressions work now). Also, stored expression for a column default is not pre-coerced to the column type; we rely on transformInsertStatement to do that when the default is actually used. This means "f1 datetime default 'now'" behaves the way people usually expect it to. BTW, all the support code is now there to implement ALTER TABLE ADD CONSTRAINT and ALTER TABLE ADD COLUMN with a default value. I didn't actually teach ALTER TABLE to call it, but it wouldn't be much work.
27 years ago
typedef struct RawColumnDefault
{
AttrNumber attnum; /* attribute to attach default to */
Ye-old pgindent run. Same 4-space tabs.
26 years ago
Node *raw_default; /* default value (untransformed parse
* tree) */
Reimplement parsing and storage of default expressions and constraint expressions in CREATE TABLE. There is no longer an emasculated expression syntax for these things; it's full a_expr for constraints, and b_expr for defaults (unfortunately the fact that NOT NULL is a part of the column constraint syntax causes a shift/reduce conflict if you try a_expr. Oh well --- at least parenthesized boolean expressions work now). Also, stored expression for a column default is not pre-coerced to the column type; we rely on transformInsertStatement to do that when the default is actually used. This means "f1 datetime default 'now'" behaves the way people usually expect it to. BTW, all the support code is now there to implement ALTER TABLE ADD CONSTRAINT and ALTER TABLE ADD COLUMN with a default value. I didn't actually teach ALTER TABLE to call it, but it wouldn't be much work.
27 years ago
} RawColumnDefault;
Ye-old pgindent run. Same 4-space tabs.
26 years ago
extern Oid RelnameFindRelid(const char *relname);
Reimplement nodeMaterial to use a temporary BufFile (or even memory, if the materialized tupleset is small enough) instead of a temporary relation. This was something I was thinking of doing anyway for performance, and Jan says he needs it for TOAST because he doesn't want to cope with toasting noname relations. With this change, the 'noname table' support in heap.c is dead code, and I have accordingly removed it. Also clean up 'noname' plan handling in planner --- nonames are either sort or materialize plans, and it seems less confusing to handle them separately under those names.
26 years ago
extern Relation heap_create(char *relname, TupleDesc tupDesc,
Make toast-table creation and deletion work somewhat reliably. Don't go through pg_exec_query_dest(), but directly to the execution routines. Also, extend parameter lists so that there's no need to change the global setting of allowSystemTableMods, a hack that was certain to cause trouble in the event of any error.
26 years ago
bool istemp, bool storage_create,
bool allow_system_table_mods);
Make DROP TABLE rollback-able: postpone physical file delete until commit. (WAL logging for this is not done yet, however.) Clean up a number of really crufty things that are no longer needed now that DROP behaves nicely. Make temp table mapper do the right things when drop or rename affecting a temp table is rolled back. Also, remove "relation modified while in use" error check, in favor of locking tables at first reference and holding that lock throughout the statement.
25 years ago
extern void heap_storage_create(Relation rel);
More cleanups of the include files - centralizing to simplify the -I's required to compile
30 years ago
Ye-old pgindent run. Same 4-space tabs.
26 years ago
extern Oid heap_create_with_catalog(char *relname, TupleDesc tupdesc,
Make toast-table creation and deletion work somewhat reliably. Don't go through pg_exec_query_dest(), but directly to the execution routines. Also, extend parameter lists so that there's no need to change the global setting of allowSystemTableMods, a hack that was certain to cause trouble in the event of any error.
26 years ago
char relkind, bool istemp,
bool allow_system_table_mods);
extern void heap_drop_with_catalog(const char *relname,
bool allow_system_table_mods);
More cleanups of the include files - centralizing to simplify the -I's required to compile
30 years ago
Add TRUNCATE command, with psql help and sgml additions.
27 years ago
extern void heap_truncate(char *relname);
More cleanups of the include files - centralizing to simplify the -I's required to compile
30 years ago
Reimplement parsing and storage of default expressions and constraint expressions in CREATE TABLE. There is no longer an emasculated expression syntax for these things; it's full a_expr for constraints, and b_expr for defaults (unfortunately the fact that NOT NULL is a part of the column constraint syntax causes a shift/reduce conflict if you try a_expr. Oh well --- at least parenthesized boolean expressions work now). Also, stored expression for a column default is not pre-coerced to the column type; we rely on transformInsertStatement to do that when the default is actually used. This means "f1 datetime default 'now'" behaves the way people usually expect it to. BTW, all the support code is now there to implement ALTER TABLE ADD CONSTRAINT and ALTER TABLE ADD COLUMN with a default value. I didn't actually teach ALTER TABLE to call it, but it wouldn't be much work.
27 years ago
extern void AddRelationRawConstraints(Relation rel,
Ye-old pgindent run. Same 4-space tabs.
26 years ago
List *rawColDefaults,
List *rawConstraints);
Reimplement parsing and storage of default expressions and constraint expressions in CREATE TABLE. There is no longer an emasculated expression syntax for these things; it's full a_expr for constraints, and b_expr for defaults (unfortunately the fact that NOT NULL is a part of the column constraint syntax causes a shift/reduce conflict if you try a_expr. Oh well --- at least parenthesized boolean expressions work now). Also, stored expression for a column default is not pre-coerced to the column type; we rely on transformInsertStatement to do that when the default is actually used. This means "f1 datetime default 'now'" behaves the way people usually expect it to. BTW, all the support code is now there to implement ALTER TABLE ADD CONSTRAINT and ALTER TABLE ADD COLUMN with a default value. I didn't actually teach ALTER TABLE to call it, but it wouldn't be much work.
27 years ago
OK, folks, here is the pgindent output.
28 years ago
#endif /* HEAP_H */