postgresql

History

Peter Eisentraut 001e114b8d Fix whitespace issues found by git diff --check, add gitattributes Set per file type attributes in .gitattributes to fine-tune whitespace checks. With the associated cleanups, the tree is now clean for git		2013-11-10 14:48:29 -05:00
..
.gitignore	Convert cvsignore to gitignore, and add .gitignore for build targets.	2010-09-22 12:57:04 +02:00
Makefile	Refactor flex and bison make rules	2012-10-11 06:57:04 -04:00
README	Revise collation derivation method and expression-tree representation.	2011-03-19 20:30:08 -04:00
analyze.c	Fix crash in error report of invalid tuple lock	2013-08-02 13:18:37 -04:00
check_keywords.pl	pgindent run for release 9.3	2013-05-29 16:58:43 -04:00
gram.y	Fix whitespace issues found by git diff --check, add gitattributes	2013-11-10 14:48:29 -05:00
keywords.c	Update copyrights for 2013	2013-01-01 17:15:01 -05:00
kwlookup.c	Update copyrights for 2013	2013-01-01 17:15:01 -05:00
parse_agg.c	Allow aggregate functions to be VARIADIC.	2013-09-03 17:08:46 -04:00
parse_clause.c	Improve the error message given for modifying a window with frame clause.	2013-11-05 21:58:08 -05:00
parse_coerce.c	Update copyrights for 2013	2013-01-01 17:15:01 -05:00
parse_collate.c	Implement the FILTER clause for aggregate function calls.	2013-07-16 20:15:36 -04:00
parse_cte.c	Update copyrights for 2013	2013-01-01 17:15:01 -05:00
parse_expr.c	Implement the FILTER clause for aggregate function calls.	2013-07-16 20:15:36 -04:00
parse_func.c	Support default arguments and named-argument notation for window functions.	2013-11-06 13:33:09 -05:00
parse_node.c	Update copyrights for 2013	2013-01-01 17:15:01 -05:00
parse_oper.c	Allow CREATE TABLE IF EXIST so succeed if the schema is nonexistent	2013-01-26 13:24:50 -05:00
parse_param.c	Clean up the mess around EXPLAIN and materialized views.	2013-04-12 19:25:31 -04:00
parse_relation.c	Don't allow system columns in CHECK constraints, except tableoid.	2013-09-23 13:31:22 -04:00
parse_target.c	Change post-rewriter representation of dropped columns in joinaliasvars.	2013-07-23 16:23:45 -04:00
parse_type.c	Allow CREATE TABLE IF EXIST so succeed if the schema is nonexistent	2013-01-26 13:24:50 -05:00
parse_utilcmd.c	Message style improvements	2013-08-07 22:48:40 -04:00
parser.c	Add SQL Standard WITH ORDINALITY support for UNNEST (and any other SRF)	2013-07-29 16:38:01 +01:00
scan.l	Change the way UESCAPE is lexed, to reduce the size of the flex tables.	2013-03-14 19:04:43 +02:00
scansup.c	Don't downcase non-ascii identifier chars in multi-byte encodings.	2013-06-08 10:00:09 -04:00

README

src/backend/parser/README

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
kwlookup.c	turn keywords into specific tokens
keywords.c	table of standard keywords (passed to kwlookup.c)
gram.y		parse the tokens and produce a "raw" parse tree
analyze.c	top level of parse analysis for optimizable queries
parse_agg.c	handle aggregates, like SUM(col1),  AVG(col2), ...
parse_clause.c	handle clauses like WHERE, ORDER BY, GROUP BY, ...
parse_coerce.c	handle coercing expressions to different data types
parse_collate.c	assign collation information in completed expressions
parse_cte.c	handle Common Table Expressions (WITH clauses)
parse_expr.c	handle expressions like col, col + 3, x = 3 or x = 4
parse_func.c	handle functions, table.column and column identifiers
parse_node.c	create nodes for various structures
parse_oper.c	handle operators in expressions
parse_param.c	handle Params (for the cases used in the core backend)
parse_relation.c support routines for tables and column handling
parse_target.c	handle the result list of the query
parse_type.c	support routines for data type handling
parse_utilcmd.c	parse analysis for utility commands (done at execution time)