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postgresql/src/include/parser/parse_relation.h

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Change my-function-name-- to my_function_name, and optimizer renames.
1999-02-13 18:22:53 -05:00
/*-------------------------------------------------------------------------
Break parser functions into smaller files, group together.
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*
Rewrite parser's handling of INSERT ... SELECT so that processing of the SELECT part of the statement is just like a plain SELECT. All INSERT-specific processing happens after the SELECT parsing is done. This eliminates many problems, e.g. INSERT ... SELECT ... GROUP BY using the wrong column labels. Ensure that DEFAULT clauses are coerced to the target column type, whether or not stored clause produces the right type. Substantial cleanup of parser's array support.
1999-07-18 20:26:20 -04:00
* parse_relation.h
* prototypes for parse_relation.c.
Break parser functions into smaller files, group together.
1997-11-25 17:07:18 -05:00
*
*
Update copyright for 2019 Backpatch-through: certain files through 9.4
2019-01-02 12:44:25 -05:00
* Portions Copyright (c) 1996-2019, 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.
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* Portions Copyright (c) 1994, Regents of the University of California
Break parser functions into smaller files, group together.
1997-11-25 17:07:18 -05:00
*
Remove cvs keywords from all files.
2010-09-20 16:08:53 -04:00
* src/include/parser/parse_relation.h
Break parser functions into smaller files, group together.
1997-11-25 17:07:18 -05:00
*
*-------------------------------------------------------------------------
*/
Rewrite parser's handling of INSERT ... SELECT so that processing of the SELECT part of the statement is just like a plain SELECT. All INSERT-specific processing happens after the SELECT parsing is done. This eliminates many problems, e.g. INSERT ... SELECT ... GROUP BY using the wrong column labels. Ensure that DEFAULT clauses are coerced to the target column type, whether or not stored clause produces the right type. Substantial cleanup of parser's array support.
1999-07-18 20:26:20 -04:00
#ifndef PARSE_RELATION_H
#define PARSE_RELATION_H
Break parser functions into smaller files, group together.
1997-11-25 17:07:18 -05:00
Change #include's to use <> and "" as appropriate.
1999-07-15 19:04:24 -04:00
#include "parser/parse_node.h"
Break parser functions into smaller files, group together.
1997-11-25 17:07:18 -05:00
Suggest to the user the column they may have meant to reference. Error messages informing the user that no such column exists can sometimes provoke a perplexed response. This often happens due to a subtle typo in the column name or, perhaps less likely, in the alias name. To speed discovery of what the real issue is in such cases, we'll now search the range table for approximate matches. If there are one or two such matches that are good enough to think that they might be what the user intended to type, and better than all other approximate matches, we'll issue a hint suggesting that the user might have intended to reference those columns. Peter Geoghegan and Robert Haas
2015-03-11 10:44:04 -04:00
/*
* Support for fuzzily matching column.
*
* This is for building diagnostic messages, where non-exact matching
* attributes are suggested to the user. The struct's fields may be facets of
* a particular RTE, or of an entire range table, depending on context.
*/
typedef struct
{
pgindent run for 9.5
2015-05-23 21:35:49 -04:00
int distance; /* Weighted distance (lowest so far) */
RangeTblEntry *rfirst; /* RTE of first */
AttrNumber first; /* Closest attribute so far */
RangeTblEntry *rsecond; /* RTE of second */
AttrNumber second; /* Second closest attribute so far */
Suggest to the user the column they may have meant to reference. Error messages informing the user that no such column exists can sometimes provoke a perplexed response. This often happens due to a subtle typo in the column name or, perhaps less likely, in the alias name. To speed discovery of what the real issue is in such cases, we'll now search the range table for approximate matches. If there are one or two such matches that are good enough to think that they might be what the user intended to type, and better than all other approximate matches, we'll issue a hint suggesting that the user might have intended to reference those columns. Peter Geoghegan and Robert Haas
2015-03-11 10:44:04 -04:00
} FuzzyAttrMatchState;
Restructure representation of join alias variables. An explicit JOIN now has an RTE of its own, and references to its outputs now are Vars referencing the JOIN RTE, rather than CASE-expressions. This allows reverse-listing in ruleutils.c to use the correct alias easily, rather than painfully reverse-engineering the alias namespace as it used to do. Also, nested FULL JOINs work correctly, because the result of the inner joins are simple Vars that the planner can cope with. This fixes a bug reported a couple times now, notably by Tatsuo on 18-Nov-01. The alias Vars are expanded into COALESCE expressions where needed at the very end of planning, rather than during parsing. Also, beginnings of support for showing plan qualifier expressions in EXPLAIN. There are probably still cases that need work. initdb forced due to change of stored-rule representation.
2002-03-11 19:52:10 -05:00
extern RangeTblEntry *refnameRangeTblEntry(ParseState *pstate,
Phase 2 pgindent run for v12. Switch to 2.1 version of pg_bsd_indent. This formats multiline function declarations "correctly", that is with additional lines of parameter declarations indented to match where the first line's left parenthesis is. Discussion: https://postgr.es/m/CAEepm=0P3FeTXRcU5B2W3jv3PgRVZ-kGUXLGfd42FFhUROO3ug@mail.gmail.com
2019-05-22 13:04:48 -04:00
const char *schemaname,
const char *refname,
int location,
int *sublevels_up);
Fix the implicit-RTE code to be able to handle implicit RTEs for CTEs, as well as regular tables. Per discussion, this seems necessary to meet the principle of least astonishment. In passing, simplify the error messages in warnAutoRange(). Now that we have parser error position info for these errors, it doesn't seem very useful to word the error message differently depending on whether we are inside a sub-select or not.
2008-10-05 22:12:56 -04:00
extern CommonTableExpr *scanNameSpaceForCTE(ParseState *pstate,
Phase 2 pgindent run for v12. Switch to 2.1 version of pg_bsd_indent. This formats multiline function declarations "correctly", that is with additional lines of parameter declarations indented to match where the first line's left parenthesis is. Discussion: https://postgr.es/m/CAEepm=0P3FeTXRcU5B2W3jv3PgRVZ-kGUXLGfd42FFhUROO3ug@mail.gmail.com
2019-05-22 13:04:48 -04:00
const char *refname,
Index *ctelevelsup);
Add infrastructure to support EphemeralNamedRelation references. A QueryEnvironment concept is added, which allows new types of objects to be passed into queries from parsing on through execution. At this point, the only thing implemented is a collection of EphemeralNamedRelation objects -- relations which can be referenced by name in queries, but do not exist in the catalogs. The only type of ENR implemented is NamedTuplestore, but provision is made to add more types fairly easily. An ENR can carry its own TupleDesc or reference a relation in the catalogs by relid. Although these features can be used without SPI, convenience functions are added to SPI so that ENRs can easily be used by code run through SPI. The initial use of all this is going to be transition tables in AFTER triggers, but that will be added to each PL as a separate commit. An incidental effect of this patch is to produce a more informative error message if an attempt is made to modify the contents of a CTE from a referencing DML statement. No tests previously covered that possibility, so one is added. Kevin Grittner and Thomas Munro Reviewed by Heikki Linnakangas, David Fetter, and Thomas Munro with valuable comments and suggestions from many others
2017-04-01 00:17:18 -04:00
extern bool scanNameSpaceForENR(ParseState *pstate, const char *refname);
Replace the parser's namespace tree (which formerly had the same representation as the jointree) with two lists of RTEs, one showing the RTEs accessible by qualified names, and the other showing the RTEs accessible by unqualified names. I think this is conceptually simpler than what we did before, and it's sure a whole lot easier to search. This seems to eliminate the parse-time bottleneck for deeply nested JOIN structures that was exhibited by phil@vodafone.
2005-06-04 20:38:11 -04:00
extern void checkNameSpaceConflicts(ParseState *pstate, List *namespace1,
Phase 2 pgindent run for v12. Switch to 2.1 version of pg_bsd_indent. This formats multiline function declarations "correctly", that is with additional lines of parameter declarations indented to match where the first line's left parenthesis is. Discussion: https://postgr.es/m/CAEepm=0P3FeTXRcU5B2W3jv3PgRVZ-kGUXLGfd42FFhUROO3ug@mail.gmail.com
2019-05-22 13:04:48 -04:00
List *namespace2);
extern int RTERangeTablePosn(ParseState *pstate,
RangeTblEntry *rte,
int *sublevels_up);
Get rid of crocky use of RangeVar nodes in parser to represent partially transformed whole-row variables. Cleaner to use regular whole-row Vars.
2004-04-02 14:07:02 -05:00
extern RangeTblEntry *GetRTEByRangeTablePosn(ParseState *pstate,
Phase 2 pgindent run for v12. Switch to 2.1 version of pg_bsd_indent. This formats multiline function declarations "correctly", that is with additional lines of parameter declarations indented to match where the first line's left parenthesis is. Discussion: https://postgr.es/m/CAEepm=0P3FeTXRcU5B2W3jv3PgRVZ-kGUXLGfd42FFhUROO3ug@mail.gmail.com
2019-05-22 13:04:48 -04:00
int varno,
int sublevels_up);
Fix GetCTEForRTE() to deal with the possibility that the RTE it's given came from a query level above the current ParseState.
2008-10-06 11:15:22 -04:00
extern CommonTableExpr *GetCTEForRTE(ParseState *pstate, RangeTblEntry *rte,
Phase 2 pgindent run for v12. Switch to 2.1 version of pg_bsd_indent. This formats multiline function declarations "correctly", that is with additional lines of parameter declarations indented to match where the first line's left parenthesis is. Discussion: https://postgr.es/m/CAEepm=0P3FeTXRcU5B2W3jv3PgRVZ-kGUXLGfd42FFhUROO3ug@mail.gmail.com
2019-05-22 13:04:48 -04:00
int rtelevelsup);
Get rid of crocky use of RangeVar nodes in parser to represent partially transformed whole-row variables. Cleaner to use regular whole-row Vars.
2004-04-02 14:07:02 -05:00
extern Node *scanRTEForColumn(ParseState *pstate, RangeTblEntry *rte,
Phase 2 pgindent run for v12. Switch to 2.1 version of pg_bsd_indent. This formats multiline function declarations "correctly", that is with additional lines of parameter declarations indented to match where the first line's left parenthesis is. Discussion: https://postgr.es/m/CAEepm=0P3FeTXRcU5B2W3jv3PgRVZ-kGUXLGfd42FFhUROO3ug@mail.gmail.com
2019-05-22 13:04:48 -04:00
const char *colname, int location,
int fuzzy_rte_penalty, FuzzyAttrMatchState *fuzzystate);
Add some const decorations to prototypes Reviewed-by: Fabien COELHO <coelho@cri.ensmp.fr>
2017-10-31 10:34:31 -04:00
extern Node *colNameToVar(ParseState *pstate, const char *colname, bool localonly,
Phase 2 pgindent run for v12. Switch to 2.1 version of pg_bsd_indent. This formats multiline function declarations "correctly", that is with additional lines of parameter declarations indented to match where the first line's left parenthesis is. Discussion: https://postgr.es/m/CAEepm=0P3FeTXRcU5B2W3jv3PgRVZ-kGUXLGfd42FFhUROO3ug@mail.gmail.com
2019-05-22 13:04:48 -04:00
int location);
Support column-level privileges, as required by SQL standard. Stephen Frost, with help from KaiGai Kohei and others
2009-01-22 15:16:10 -05:00
extern void markVarForSelectPriv(ParseState *pstate, Var *var,
Phase 2 pgindent run for v12. Switch to 2.1 version of pg_bsd_indent. This formats multiline function declarations "correctly", that is with additional lines of parameter declarations indented to match where the first line's left parenthesis is. Discussion: https://postgr.es/m/CAEepm=0P3FeTXRcU5B2W3jv3PgRVZ-kGUXLGfd42FFhUROO3ug@mail.gmail.com
2019-05-22 13:04:48 -04:00
RangeTblEntry *rte);
Add a bunch of new error location reports to parse-analysis error messages. There are still some weak spots around JOIN USING and relation alias lists, but most errors reported within backend/parser/ now have locations.
2008-09-01 16:42:46 -04:00
extern Relation parserOpenTable(ParseState *pstate, const RangeVar *relation,
Phase 2 pgindent run for v12. Switch to 2.1 version of pg_bsd_indent. This formats multiline function declarations "correctly", that is with additional lines of parameter declarations indented to match where the first line's left parenthesis is. Discussion: https://postgr.es/m/CAEepm=0P3FeTXRcU5B2W3jv3PgRVZ-kGUXLGfd42FFhUROO3ug@mail.gmail.com
2019-05-22 13:04:48 -04:00
int lockmode);
OK, folks, here is the pgindent output.
1998-09-01 00:40:42 -04:00
extern RangeTblEntry *addRangeTableEntry(ParseState *pstate,
Phase 2 pgindent run for v12. Switch to 2.1 version of pg_bsd_indent. This formats multiline function declarations "correctly", that is with additional lines of parameter declarations indented to match where the first line's left parenthesis is. Discussion: https://postgr.es/m/CAEepm=0P3FeTXRcU5B2W3jv3PgRVZ-kGUXLGfd42FFhUROO3ug@mail.gmail.com
2019-05-22 13:04:48 -04:00
RangeVar *relation,
Alias *alias,
bool inh,
bool inFromCl);
A little further progress on schemas: push down RangeVars into addRangeTableEntry calls. Remove relname field from RTEs, since it will no longer be a useful unique identifier of relations; we want to encourage people to rely on the relation OID instead. Further work on dumping qual expressions in EXPLAIN, too.
2002-03-21 21:56:37 -05:00
extern RangeTblEntry *addRangeTableEntryForRelation(ParseState *pstate,
Phase 2 pgindent run for v12. Switch to 2.1 version of pg_bsd_indent. This formats multiline function declarations "correctly", that is with additional lines of parameter declarations indented to match where the first line's left parenthesis is. Discussion: https://postgr.es/m/CAEepm=0P3FeTXRcU5B2W3jv3PgRVZ-kGUXLGfd42FFhUROO3ug@mail.gmail.com
2019-05-22 13:04:48 -04:00
Relation rel,
int lockmode,
Alias *alias,
bool inh,
bool inFromCl);
Subselects in FROM clause, per ISO syntax: FROM (SELECT ...) [AS] alias. (Don't forget that an alias is required.) Views reimplemented as expanding to subselect-in-FROM. Grouping, aggregates, DISTINCT in views actually work now (he says optimistically). No UNION support in subselects/views yet, but I have some ideas about that. Rule-related permissions checking moved out of rewriter and into executor. INITDB REQUIRED!
2000-09-29 14:21:41 -04:00
extern RangeTblEntry *addRangeTableEntryForSubquery(ParseState *pstate,
Phase 2 pgindent run for v12. Switch to 2.1 version of pg_bsd_indent. This formats multiline function declarations "correctly", that is with additional lines of parameter declarations indented to match where the first line's left parenthesis is. Discussion: https://postgr.es/m/CAEepm=0P3FeTXRcU5B2W3jv3PgRVZ-kGUXLGfd42FFhUROO3ug@mail.gmail.com
2019-05-22 13:04:48 -04:00
Query *subquery,
Alias *alias,
bool lateral,
bool inFromCl);
First pass at set-returning-functions in FROM, by Joe Conway with some kibitzing from Tom Lane. Not everything works yet, and there's no documentation or regression test, but let's commit this so Joe doesn't need to cope with tracking changes in so many files ...
2002-05-12 16:10:05 -04:00
extern RangeTblEntry *addRangeTableEntryForFunction(ParseState *pstate,
Phase 2 pgindent run for v12. Switch to 2.1 version of pg_bsd_indent. This formats multiline function declarations "correctly", that is with additional lines of parameter declarations indented to match where the first line's left parenthesis is. Discussion: https://postgr.es/m/CAEepm=0P3FeTXRcU5B2W3jv3PgRVZ-kGUXLGfd42FFhUROO3ug@mail.gmail.com
2019-05-22 13:04:48 -04:00
List *funcnames,
List *funcexprs,
List *coldeflists,
RangeFunction *rangefunc,
bool lateral,
bool inFromCl);
Add support for multi-row VALUES clauses as part of INSERT statements (e.g. "INSERT ... VALUES (...), (...), ...") and elsewhere as allowed by the spec. (e.g. similar to a FROM clause subselect). initdb required. Joe Conway and Tom Lane.
2006-08-01 21:59:48 -04:00
extern RangeTblEntry *addRangeTableEntryForValues(ParseState *pstate,
Phase 2 pgindent run for v12. Switch to 2.1 version of pg_bsd_indent. This formats multiline function declarations "correctly", that is with additional lines of parameter declarations indented to match where the first line's left parenthesis is. Discussion: https://postgr.es/m/CAEepm=0P3FeTXRcU5B2W3jv3PgRVZ-kGUXLGfd42FFhUROO3ug@mail.gmail.com
2019-05-22 13:04:48 -04:00
List *exprs,
List *coltypes,
List *coltypmods,
List *colcollations,
Alias *alias,
bool lateral,
bool inFromCl);
Support XMLTABLE query expression XMLTABLE is defined by the SQL/XML standard as a feature that allows turning XML-formatted data into relational form, so that it can be used as a <table primary> in the FROM clause of a query. This new construct provides significant simplicity and performance benefit for XML data processing; what in a client-side custom implementation was reported to take 20 minutes can be executed in 400ms using XMLTABLE. (The same functionality was said to take 10 seconds using nested PostgreSQL XPath function calls, and 5 seconds using XMLReader under PL/Python). The implemented syntax deviates slightly from what the standard requires. First, the standard indicates that the PASSING clause is optional and that multiple XML input documents may be given to it; we make it mandatory and accept a single document only. Second, we don't currently support a default namespace to be specified. This implementation relies on a new executor node based on a hardcoded method table. (Because the grammar is fixed, there is no extensibility in the current approach; further constructs can be implemented on top of this such as JSON_TABLE, but they require changes to core code.) Author: Pavel Stehule, Álvaro Herrera Extensively reviewed by: Craig Ringer Discussion: https://postgr.es/m/CAFj8pRAgfzMD-LoSmnMGybD0WsEznLHWap8DO79+-GTRAPR4qA@mail.gmail.com
2017-03-08 10:39:37 -05:00
extern RangeTblEntry *addRangeTableEntryForTableFunc(ParseState *pstate,
Phase 2 pgindent run for v12. Switch to 2.1 version of pg_bsd_indent. This formats multiline function declarations "correctly", that is with additional lines of parameter declarations indented to match where the first line's left parenthesis is. Discussion: https://postgr.es/m/CAEepm=0P3FeTXRcU5B2W3jv3PgRVZ-kGUXLGfd42FFhUROO3ug@mail.gmail.com
2019-05-22 13:04:48 -04:00
TableFunc *tf,
Alias *alias,
bool lateral,
bool inFromCl);
Restructure representation of join alias variables. An explicit JOIN now has an RTE of its own, and references to its outputs now are Vars referencing the JOIN RTE, rather than CASE-expressions. This allows reverse-listing in ruleutils.c to use the correct alias easily, rather than painfully reverse-engineering the alias namespace as it used to do. Also, nested FULL JOINs work correctly, because the result of the inner joins are simple Vars that the planner can cope with. This fixes a bug reported a couple times now, notably by Tatsuo on 18-Nov-01. The alias Vars are expanded into COALESCE expressions where needed at the very end of planning, rather than during parsing. Also, beginnings of support for showing plan qualifier expressions in EXPLAIN. There are probably still cases that need work. initdb forced due to change of stored-rule representation.
2002-03-11 19:52:10 -05:00
extern RangeTblEntry *addRangeTableEntryForJoin(ParseState *pstate,
Phase 2 pgindent run for v12. Switch to 2.1 version of pg_bsd_indent. This formats multiline function declarations "correctly", that is with additional lines of parameter declarations indented to match where the first line's left parenthesis is. Discussion: https://postgr.es/m/CAEepm=0P3FeTXRcU5B2W3jv3PgRVZ-kGUXLGfd42FFhUROO3ug@mail.gmail.com
2019-05-22 13:04:48 -04:00
List *colnames,
JoinType jointype,
List *aliasvars,
Alias *alias,
bool inFromCl);
Implement SQL-standard WITH clauses, including WITH RECURSIVE. There are some unimplemented aspects: recursive queries must use UNION ALL (should allow UNION too), and we don't have SEARCH or CYCLE clauses. These might or might not get done for 8.4, but even without them it's a pretty useful feature. There are also a couple of small loose ends and definitional quibbles, which I'll send a memo about to pgsql-hackers shortly. But let's land the patch now so we can get on with other development. Yoshiyuki Asaba, with lots of help from Tatsuo Ishii and Tom Lane
2008-10-04 17:56:55 -04:00
extern RangeTblEntry *addRangeTableEntryForCTE(ParseState *pstate,
Phase 2 pgindent run for v12. Switch to 2.1 version of pg_bsd_indent. This formats multiline function declarations "correctly", that is with additional lines of parameter declarations indented to match where the first line's left parenthesis is. Discussion: https://postgr.es/m/CAEepm=0P3FeTXRcU5B2W3jv3PgRVZ-kGUXLGfd42FFhUROO3ug@mail.gmail.com
2019-05-22 13:04:48 -04:00
CommonTableExpr *cte,
Index levelsup,
RangeVar *rv,
bool inFromCl);
Add infrastructure to support EphemeralNamedRelation references. A QueryEnvironment concept is added, which allows new types of objects to be passed into queries from parsing on through execution. At this point, the only thing implemented is a collection of EphemeralNamedRelation objects -- relations which can be referenced by name in queries, but do not exist in the catalogs. The only type of ENR implemented is NamedTuplestore, but provision is made to add more types fairly easily. An ENR can carry its own TupleDesc or reference a relation in the catalogs by relid. Although these features can be used without SPI, convenience functions are added to SPI so that ENRs can easily be used by code run through SPI. The initial use of all this is going to be transition tables in AFTER triggers, but that will be added to each PL as a separate commit. An incidental effect of this patch is to produce a more informative error message if an attempt is made to modify the contents of a CTE from a referencing DML statement. No tests previously covered that possibility, so one is added. Kevin Grittner and Thomas Munro Reviewed by Heikki Linnakangas, David Fetter, and Thomas Munro with valuable comments and suggestions from many others
2017-04-01 00:17:18 -04:00
extern RangeTblEntry *addRangeTableEntryForENR(ParseState *pstate,
Phase 2 pgindent run for v12. Switch to 2.1 version of pg_bsd_indent. This formats multiline function declarations "correctly", that is with additional lines of parameter declarations indented to match where the first line's left parenthesis is. Discussion: https://postgr.es/m/CAEepm=0P3FeTXRcU5B2W3jv3PgRVZ-kGUXLGfd42FFhUROO3ug@mail.gmail.com
2019-05-22 13:04:48 -04:00
RangeVar *rv,
bool inFromCl);
Make FOR UPDATE/SHARE in the primary query not propagate into WITH queries; for example in WITH w AS (SELECT * FROM foo) SELECT * FROM w, bar ... FOR UPDATE the FOR UPDATE will now affect bar but not foo. This is more useful and consistent than the original 8.4 behavior, which tried to propagate FOR UPDATE into the WITH query but always failed due to assorted implementation restrictions. Even though we are in process of removing those restrictions, it seems correct on philosophical grounds to not let the outer query's FOR UPDATE affect the WITH query. In passing, fix isLockedRel which frequently got things wrong in nested-subquery cases: "FOR UPDATE OF foo" applies to an alias foo in the current query level, not subqueries. This has been broken for a long time, but it doesn't seem worth back-patching further than 8.4 because the actual consequences are minimal. At worst the parser would sometimes get RowShareLock on a relation when it should be AccessShareLock or vice versa. That would only make a difference if someone were using ExclusiveLock concurrently, which no standard operation does, and anyway FOR UPDATE doesn't result in visible changes so it's not clear that the someone would notice any problem. Between that and the fact that FOR UPDATE barely works with subqueries at all in existing releases, I'm not excited about worrying about it.
2009-10-27 13:11:18 -04:00
extern bool isLockedRefname(ParseState *pstate, const char *refname);
Change scoping of table and join refnames to conform to SQL92: a JOIN clause with an alias is a <subquery> and therefore hides table references appearing within it, according to the spec. This is the same as the preliminary patch I posted to pgsql-patches yesterday, plus some really grotty code in ruleutils.c to reverse-list a query tree with the correct alias name depending on context. I'd rather not have done that, but unless we want to force another initdb for 7.1, there's no other way for now.
2001-02-14 16:35:07 -05:00
extern void addRTEtoQuery(ParseState *pstate, RangeTblEntry *rte,
Phase 2 pgindent run for v12. Switch to 2.1 version of pg_bsd_indent. This formats multiline function declarations "correctly", that is with additional lines of parameter declarations indented to match where the first line's left parenthesis is. Discussion: https://postgr.es/m/CAEepm=0P3FeTXRcU5B2W3jv3PgRVZ-kGUXLGfd42FFhUROO3ug@mail.gmail.com
2019-05-22 13:04:48 -04:00
bool addToJoinList,
bool addToRelNameSpace, bool addToVarNameSpace);
Tweak __attribute__-wrapping macros for better pgindent results. This improves on commit bbfd7edae5aa5ad5553d3c7e102f2e450d4380d4 by making two simple changes: * pg_attribute_noreturn now takes parentheses, ie pg_attribute_noreturn(). Likewise pg_attribute_unused(), pg_attribute_packed(). This reduces pgindent's tendency to misformat declarations involving them. * attributes are now always attached to function declarations, not definitions. Previously some places were taking creative shortcuts, which were not merely candidates for bad misformatting by pgindent but often were outright wrong anyway. (It does little good to put a noreturn annotation where callers can't see it.) In any case, if we would like to believe that these macros can be used with non-gcc compilers, we should avoid gratuitous variance in usage patterns. I also went through and manually improved the formatting of a lot of declarations, and got rid of excessively repetitive (and now obsolete anyway) comments informing the reader what pg_attribute_printf is for.
2015-03-26 14:03:19 -04:00
extern void errorMissingRTE(ParseState *pstate, RangeVar *relation) pg_attribute_noreturn();
Implement SQL-standard LATERAL subqueries. This patch implements the standard syntax of LATERAL attached to a sub-SELECT in FROM, and also allows LATERAL attached to a function in FROM, since set-returning function calls are expected to be one of the principal use-cases. The main change here is a rewrite of the mechanism for keeping track of which relations are visible for column references while the FROM clause is being scanned. The parser "namespace" lists are no longer lists of bare RTEs, but are lists of ParseNamespaceItem structs, which carry an RTE pointer as well as some visibility-controlling flags. Aside from supporting LATERAL correctly, this lets us get rid of the ancient hacks that required rechecking subqueries and JOIN/ON and function-in-FROM expressions for invalid references after they were initially parsed. Invalid column references are now always correctly detected on sight. In passing, remove assorted parser error checks that are now dead code by virtue of our having gotten rid of add_missing_from, as well as some comments that are obsolete for the same reason. (It was mainly add_missing_from that caused so much fudging here in the first place.) The planner support for this feature is very minimal, and will be improved in future patches. It works well enough for testing purposes, though. catversion bump forced due to new field in RangeTblEntry.
2012-08-07 19:02:54 -04:00
extern void errorMissingColumn(ParseState *pstate,
Phase 2 pgindent run for v12. Switch to 2.1 version of pg_bsd_indent. This formats multiline function declarations "correctly", that is with additional lines of parameter declarations indented to match where the first line's left parenthesis is. Discussion: https://postgr.es/m/CAEepm=0P3FeTXRcU5B2W3jv3PgRVZ-kGUXLGfd42FFhUROO3ug@mail.gmail.com
2019-05-22 13:04:48 -04:00
const char *relname, const char *colname, int location) pg_attribute_noreturn();
Change expandRTE() and ResolveNew() back to taking just the single RTE of interest, rather than the whole rangetable list. This makes the API more understandable and avoids duplicate RTE lookups. This patch reverts no-longer-needed portions of my patch of 2004-08-19.
2005-06-04 15:19:42 -04:00
extern void expandRTE(RangeTblEntry *rte, int rtindex, int sublevels_up,
Phase 2 pgindent run for v12. Switch to 2.1 version of pg_bsd_indent. This formats multiline function declarations "correctly", that is with additional lines of parameter declarations indented to match where the first line's left parenthesis is. Discussion: https://postgr.es/m/CAEepm=0P3FeTXRcU5B2W3jv3PgRVZ-kGUXLGfd42FFhUROO3ug@mail.gmail.com
2019-05-22 13:04:48 -04:00
int location, bool include_dropped,
List **colnames, List **colvars);
Change expandRTE() and ResolveNew() back to taking just the single RTE of interest, rather than the whole rangetable list. This makes the API more understandable and avoids duplicate RTE lookups. This patch reverts no-longer-needed portions of my patch of 2004-08-19.
2005-06-04 15:19:42 -04:00
extern List *expandRelAttrs(ParseState *pstate, RangeTblEntry *rte,
Phase 2 pgindent run for v12. Switch to 2.1 version of pg_bsd_indent. This formats multiline function declarations "correctly", that is with additional lines of parameter declarations indented to match where the first line's left parenthesis is. Discussion: https://postgr.es/m/CAEepm=0P3FeTXRcU5B2W3jv3PgRVZ-kGUXLGfd42FFhUROO3ug@mail.gmail.com
2019-05-22 13:04:48 -04:00
int rtindex, int sublevels_up, int location);
ALTER TABLE DROP COLUMN works. Patch by Christopher Kings-Lynne, code review by Tom Lane. Remaining issues: functions that take or return tuple types are likely to break if one drops (or adds!) a column in the table defining the type. Need to think about what to do here. Along the way: some code review for recent COPY changes; mark system columns attnotnull = true where appropriate, per discussion a month ago.
2002-08-02 14:15:10 -04:00
extern int attnameAttNum(Relation rd, const char *attname, bool sysColOK);
Correct constness of system attributes in heap.c & prerequisites. This allows the compiler / linker to mark affected pages as read-only. There's a fair number of pre-requisite changes, to allow the const properly be propagated. Most of consts were already required for correctness anyway, just not represented on the type-level. Arguably we could be more aggressive in using consts in related code, but.. This requires using a few of the types underlying typedefs that removes pointers (e.g. const NameData *) as declaring the typedefed type constant doesn't have the same meaning (it makes the variable const, not what it points to). Discussion: https://postgr.es/m/20181015200754.7y7zfuzsoux2c4ya@alap3.anarazel.de
2018-10-16 12:44:43 -04:00
extern const NameData *attnumAttName(Relation rd, int attid);
pgindent run before 6.3 release, with Thomas' requested changes.
1998-02-25 23:46:47 -05:00
extern Oid attnumTypeId(Relation rd, int attid);
Fix RI_Initial_Check to use a COLLATE clause when needed in its query. If the referencing and referenced columns have different collations, the parser will be unable to resolve which collation to use unless it's helped out in this way. The effects are sometimes masked, if we end up using a non-collation-sensitive plan; but if we do use a mergejoin we'll see a failure, as recently noted by Robert Haas. The SQL spec states that the referenced column's collation should be used to resolve RI checks, so that's what we do. Note however that we currently don't append a COLLATE clause when writing a query that examines only the referencing column. If we ever support collations that have varying notions of equality, that will have to be changed. For the moment, though, it's preferable to leave it off so that we can use a normal index on the referencing column.
2011-04-11 21:32:53 -04:00
extern Oid attnumCollationId(Relation rd, int attid);
Clean up the mess around EXPLAIN and materialized views. Revert the matview-related changes in explain.c's API, as per recent complaint from Robert Haas. The reason for these appears to have been principally some ill-considered choices around having intorel_startup do what ought to be parse-time checking, plus a poor arrangement for passing it the view parsetree it needs to store into pg_rewrite when creating a materialized view. Do the latter by having parse analysis stick a copy into the IntoClause, instead of doing it at runtime. (On the whole, I seriously question the choice to represent CREATE MATERIALIZED VIEW as a variant of SELECT INTO/CREATE TABLE AS, because that means injecting even more complexity into what was already a horrid legacy kluge. However, I didn't go so far as to rethink that choice ... yet.) I also moved several error checks into matview parse analysis, and made the check for external Params in a matview more accurate. In passing, clean things up a bit more around interpretOidsOption(), and fix things so that we can use that to force no-oids for views, sequences, etc, thereby eliminating the need to cons up "oids = false" options when creating them. catversion bump due to change in IntoClause. (I wonder though if we really need readfuncs/outfuncs support for IntoClause anymore.)
2013-04-12 19:25:20 -04:00
extern bool isQueryUsingTempRelation(Query *query);
Another pgindent run. Fixes enum indenting, and improves #endif spacing. Also adds space for one-line comments.
2001-10-28 01:26:15 -05:00
Phase 2 of pgindent updates. Change pg_bsd_indent to follow upstream rules for placement of comments to the right of code, and remove pgindent hack that caused comments following #endif to not obey the general rule. Commit e3860ffa4dd0dad0dd9eea4be9cc1412373a8c89 wasn't actually using the published version of pg_bsd_indent, but a hacked-up version that tried to minimize the amount of movement of comments to the right of code. The situation of interest is where such a comment has to be moved to the right of its default placement at column 33 because there's code there. BSD indent has always moved right in units of tab stops in such cases --- but in the previous incarnation, indent was working in 8-space tab stops, while now it knows we use 4-space tabs. So the net result is that in about half the cases, such comments are placed one tab stop left of before. This is better all around: it leaves more room on the line for comment text, and it means that in such cases the comment uniformly starts at the next 4-space tab stop after the code, rather than sometimes one and sometimes two tabs after. Also, ensure that comments following #endif are indented the same as comments following other preprocessor commands such as #else. That inconsistency turns out to have been self-inflicted damage from a poorly-thought-through post-indent "fixup" in pgindent. This patch is much less interesting than the first round of indent changes, but also bulkier, so I thought it best to separate the effects. Discussion: https://postgr.es/m/E1dAmxK-0006EE-1r@gemulon.postgresql.org Discussion: https://postgr.es/m/30527.1495162840@sss.pgh.pa.us
2017-06-21 15:18:54 -04:00
#endif /* PARSE_RELATION_H */
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