postgresql

History

Peter Eisentraut b999c247a5 Add aggregate_with_argtypes and use it consistently This works like function_with_argtypes, but aggregates allow slightly different arguments. Reviewed-by: Alvaro Herrera <alvherre@2ndquadrant.com> Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>		2016-12-01 17:38:49 -05:00
..
.gitignore	Convert cvsignore to gitignore, and add .gitignore for build targets.	2010-09-22 12:57:04 +02:00
Makefile	Move keywords.c/kwlookup.c into src/common/.	2016-03-23 20:22:08 -04:00
README	Move keywords.c/kwlookup.c into src/common/.	2016-03-23 20:22:08 -04:00
analyze.c	Improve handling of "UPDATE ... SET (column_list) = row_constructor".	2016-11-22 15:20:10 -05:00
check_keywords.pl	Update copyright for 2016	2016-01-02 13:33:40 -05:00
gram.y	Add aggregate_with_argtypes and use it consistently	2016-12-01 17:38:49 -05:00
parse_agg.c	Fix type-safety problem with parallel aggregate serial/deserialization.	2016-06-22 16:52:41 -04:00
parse_clause.c	Run pgindent on a batch of (mostly-planner-related) source files.	2016-04-06 11:34:02 -04:00
parse_coerce.c	Add defenses against putting expanded objects into Const nodes.	2016-01-21 12:56:08 -05:00
parse_collate.c	Update copyright for 2016	2016-01-02 13:33:40 -05:00
parse_cte.c	Update copyright for 2016	2016-01-02 13:33:40 -05:00
parse_expr.c	Improve handling of "UPDATE ... SET (column_list) = row_constructor".	2016-11-22 15:20:10 -05:00
parse_func.c	Improve parser's and planner's handling of set-returning functions.	2016-09-13 13:54:24 -04:00
parse_node.c	Update copyright for 2016	2016-01-02 13:33:40 -05:00
parse_oper.c	Improve parser's and planner's handling of set-returning functions.	2016-09-13 13:54:24 -04:00
parse_param.c	Update copyright for 2016	2016-01-02 13:33:40 -05:00
parse_relation.c	pgindent run for 9.6	2016-06-09 18:02:36 -04:00
parse_target.c	Improve handling of "UPDATE ... SET (column_list) = row_constructor".	2016-11-22 15:20:10 -05:00
parse_type.c	Add defenses against putting expanded objects into Const nodes.	2016-01-21 12:56:08 -05:00
parse_utilcmd.c	Improve parser's and planner's handling of set-returning functions.	2016-09-13 13:54:24 -04:00
parser.c	Update copyright for 2016	2016-01-02 13:33:40 -05:00
scan.l	Update comment about allowing GUCs to change scanning.	2016-06-21 20:23:31 -04:00
scansup.c	Introduce parse_ident()	2016-03-18 18:16:14 +03:00

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
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)

See also src/common/keywords.c, which contains the table of standard
keywords and the keyword lookup function.  We separated that out because
various frontend code wants to use it too.