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postgresql/src/backend/parser
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Alvaro Herrera 2eda8dfb52 Make it possibly to specify GUC params per user and per database. 
Create a new catalog pg_db_role_setting where they are now stored, and better
encapsulate the code that deals with settings into its realm.  The old
datconfig and rolconfig columns are removed.

psql has gained a \drds command to display the settings.

Backwards compatibility warning: while the backwards-compatible system views
still have the config columns, they no longer completely represent the
configuration for a user or database.

Catalog version bumped.
 		2009-10-07 22:14:26 +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 Derived files that are shipped in the distribution used to be built in the 2009-08-28 20:26:19 +00:00
README Small wording improvements for source code READMEs. 2008-04-09 01:00:46 +00:00
analyze.c Fix bug with WITH RECURSIVE immediately inside WITH RECURSIVE. 99% of the 2009-09-09 03:32:52 +00:00
gram.y Make it possibly to specify GUC params per user and per database. 2009-10-07 22:14:26 +00:00
keywords.c Tweak the core scanner so that it can be used by plpgsql too. 2009-07-14 20:24:10 +00:00
kwlookup.c Tweak the core scanner so that it can be used by plpgsql too. 2009-07-14 20:24:10 +00:00
parse_agg.c 8.4 pgindent run, with new combined Linux/FreeBSD/MinGW typedef list 2009-06-11 14:49:15 +00:00
parse_clause.c Fix bug with WITH RECURSIVE immediately inside WITH RECURSIVE. 99% of the 2009-09-09 03:32:52 +00:00
parse_coerce.c 8.4 pgindent run, with new combined Linux/FreeBSD/MinGW typedef list 2009-06-11 14:49:15 +00:00
parse_cte.c Fix bug with WITH RECURSIVE immediately inside WITH RECURSIVE. 99% of the 2009-09-09 03:32:52 +00:00
parse_expr.c Fix bug with WITH RECURSIVE immediately inside WITH RECURSIVE. 99% of the 2009-09-09 03:32:52 +00:00
parse_func.c 8.4 pgindent run, with new combined Linux/FreeBSD/MinGW typedef list 2009-06-11 14:49:15 +00:00
parse_node.c 8.4 pgindent run, with new combined Linux/FreeBSD/MinGW typedef list 2009-06-11 14:49:15 +00:00
parse_oper.c Fix get_sort_group_operators() so that it doesn't think arrays can be grouped 2009-06-13 15:42:09 +00:00
parse_relation.c Make backend header files C++ safe 2009-07-16 06:33:46 +00:00
parse_target.c Make backend header files C++ safe 2009-07-16 06:33:46 +00:00
parse_type.c Make backend header files C++ safe 2009-07-16 06:33:46 +00:00
parse_utilcmd.c Change CREATE TABLE so that column default expressions coming from different 2009-10-06 00:55:26 +00:00
parser.c Tweak the core scanner so that it can be used by plpgsql too. 2009-07-14 20:24:10 +00:00
scan.l Sync psql's scanner with recent changes in backend scanner's flex rules. 2009-09-27 03:27:24 +00:00
scansup.c Update copyright for 2009. 2009-01-01 17:24:05 +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)