postgresql

History

Tom Lane 4c5e810fcd Code review for NOWAIT patch: downgrade NOWAIT from fully reserved keyword to unreserved keyword, use ereport not elog, assign a separate error code for 'could not obtain lock' so that applications will be able to detect that case cleanly.		2004-10-01 16:40:05 +00:00
..
.cvsignore	Add .cvsignore file so cvs doesn't complain if you have lex/yacc	1999-03-21 02:43:58 +00:00
Makefile	$Header: -> $PostgreSQL Changes ...	2003-11-29 19:52:15 +00:00
README	cleanup	1998-08-23 14:43:46 +00:00
analyze.c	A few minor list-related cleanups:	2004-09-27 04:12:03 +00:00
gram.y	Code review for NOWAIT patch: downgrade NOWAIT from fully reserved keyword	2004-10-01 16:40:05 +00:00
keywords.c	Update copyright to 2004.	2004-08-29 04:13:13 +00:00
parse_agg.c	Pgindent run for 8.0.	2004-08-29 05:07:03 +00:00
parse_clause.c	Come to think of it, functions in FROM have the same syntactic restriction	2004-09-30 00:24:27 +00:00
parse_coerce.c	Pgindent run for 8.0.	2004-08-29 05:07:03 +00:00
parse_expr.c	Pgindent run for 8.0.	2004-08-29 05:07:03 +00:00
parse_func.c	Pgindent run for 8.0.	2004-08-29 05:07:03 +00:00
parse_node.c	Pgindent run for 8.0.	2004-08-29 05:07:03 +00:00
parse_oper.c	Pgindent run for 8.0.	2004-08-29 05:07:03 +00:00
parse_relation.c	Pgindent run for 8.0.	2004-08-29 05:07:03 +00:00
parse_target.c	Come to think of it, functions in FROM have the same syntactic restriction	2004-09-30 00:24:27 +00:00
parse_type.c	Pgindent run for 8.0.	2004-08-29 05:07:03 +00:00
parser.c	Update copyright to 2004.	2004-08-29 04:13:13 +00:00
scan.l	Added a call to gettext() to fix broken translated error messages.	2004-09-09 06:56:48 +00:00
scansup.c	Pgindent run for 8.0.	2004-08-29 05:07:03 +00:00

README

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

parser.c	things start here
scan.l		break query into tokens
scansup.c	handle escapes in input
keywords.c	turn keywords into specific tokens
gram.y		parse the tokens and fill query-type-specific structures
analyze.c	handle post-parse processing for each query type
parse_clause.c	handle clauses like WHERE, ORDER BY, GROUP BY, ...
parse_coerce.c	used for coercing expressions of different types
parse_expr.c	handle expressions like col, col + 3, x = 3 or x = 4
parse_oper.c	handle operations 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 type handling