postgresql

History

Peter Eisentraut 455dffbb73 Default values for function arguments Pavel Stehule, with some tweaks by Peter Eisentraut		2008-12-04 17:51:28 +00:00
..
.cvsignore	Remove all traces that suggest that a non-Bison yacc might be supported, and	2008-08-29 13:02:33 +00:00
Makefile	Implement SQL-standard WITH clauses, including WITH RECURSIVE.	2008-10-04 21:56:55 +00:00
README	Small wording improvements for source code READMEs.	2008-04-09 01:00:46 +00:00
analyze.c	Make SELECT FOR UPDATE/SHARE work on inheritance trees, by having the plan	2008-11-15 19:43:47 +00:00
gram.y	Default values for function arguments	2008-12-04 17:51:28 +00:00
keywords.c	SQL:2008 syntax CURRENT_CATALOG, CURRENT_SCHEMA, SET CATALOG, SET SCHEMA.	2008-10-27 09:37:47 +00:00
parse_agg.c	Implement SQL-standard WITH clauses, including WITH RECURSIVE.	2008-10-04 21:56:55 +00:00
parse_clause.c	Fix the implicit-RTE code to be able to handle implicit RTEs for CTEs, as	2008-10-06 02:12:56 +00:00
parse_coerce.c	Add support for user-defined I/O conversion casts.	2008-10-31 08:39:22 +00:00
parse_cte.c	Modify the parser's error reporting to include a specific hint for the case	2008-10-08 01:14:44 +00:00
parse_expr.c	Better solution to the IN-list issue: instead of having an arbitrary cutoff,	2008-10-26 02:46:25 +00:00
parse_func.c	Default values for function arguments	2008-12-04 17:51:28 +00:00
parse_node.c	Add a bunch of new error location reports to parse-analysis error messages.	2008-09-01 20:42:46 +00:00
parse_oper.c	Improve the plan cache invalidation mechanism to make it invalidate plans	2008-09-09 18:58:09 +00:00
parse_relation.c	Modify the parser's error reporting to include a specific hint for the case	2008-10-08 01:14:44 +00:00
parse_target.c	Improve parser error location for cases where an INSERT or UPDATE command	2008-10-07 01:47:55 +00:00
parse_type.c	Implement SQL-standard WITH clauses, including WITH RECURSIVE.	2008-10-04 21:56:55 +00:00
parse_utilcmd.c	Add a bunch of new error location reports to parse-analysis error messages.	2008-09-01 20:42:46 +00:00
parser.c	Add WITH [NO] DATA clause to CREATE TABLE AS, per SQL.	2008-10-28 14:09:45 +00:00
scan.l	Unicode escapes in strings and identifiers	2008-10-29 08:04:54 +00:00
scansup.c	Update copyrights in source tree to 2008.	2008-01-01 19:46:01 +00:00

README

$PostgreSQL: pgsql/src/backend/parser/README,v 1.10 2008/04/09 01:00:46 momjian Exp $

Parser
======

This directory does more than tokenize and parse SQL queries.  It also
creates Query structures for the various complex queries that are passed
to the optimizer and then executor.

parser.c	things start here
scan.l		break query into tokens
scansup.c	handle escapes in input strings
keywords.c	turn keywords into specific tokens
gram.y		parse the tokens and fill query-type-specific structures
analyze.c	top level of parse analysis for optimizable queries
parse_clause.c	handle clauses like WHERE, ORDER BY, GROUP BY, ...
parse_coerce.c	handle coercing expressions to different data types
parse_expr.c	handle expressions like col, col + 3, x = 3 or x = 4
parse_oper.c	handle operators in expressions
parse_agg.c	handle aggregates, like SUM(col1),  AVG(col2), ...
parse_func.c	handle functions, table.column and column identifiers
parse_node.c	create nodes for various structures
parse_target.c	handle the result list of the query
parse_relation.c support routines for tables and column handling
parse_type.c	support routines for data type handling
parse_utilcmd.c	parse analysis for utility commands (done at execution time)