postgresql

History

Amit Kapila 14aec03502 Make the order of the header file includes consistent in backend modules. Similar to commits `7e735035f2` and `dddf4cdc33`, this commit makes the order of header file inclusion consistent for backend modules. In the passing, removed a couple of duplicate inclusions. Author: Vignesh C Reviewed-by: Kuntal Ghosh and Amit Kapila Discussion: https://postgr.es/m/CALDaNm2Sznv8RR6Ex-iJO6xAdsxgWhCoETkaYX=+9DW3q0QCfA@mail.gmail.com		2019-11-12 08:30:16 +05:30
..
.gitignore	Convert cvsignore to gitignore, and add .gitignore for build targets.	2010-09-22 12:57:04 +02:00
Makefile	Split all OBJS style lines in makefiles into one-line-per-entry style.	2019-11-05 14:41:07 -08:00
README	Move keywords.c/kwlookup.c into src/common/.	2016-03-23 20:22:08 -04:00
analyze.c	Represent Lists as expansible arrays, not chains of cons-cells.	2019-07-15 13:41:58 -04:00
check_keywords.pl	Update copyright for 2019	2019-01-02 12:44:25 -05:00
gram.y	Allow setting statistics target for extended statistics	2019-09-11 00:25:51 +02:00
parse_agg.c	Rationalize use of list_concat + list_copy combinations.	2019-08-12 11:20:18 -04:00
parse_clause.c	Make the order of the header file includes consistent in backend modules.	2019-11-12 08:30:16 +05:30
parse_coerce.c	Represent Lists as expansible arrays, not chains of cons-cells.	2019-07-15 13:41:58 -04:00
parse_collate.c	Represent Lists as expansible arrays, not chains of cons-cells.	2019-07-15 13:41:58 -04:00
parse_cte.c	Represent Lists as expansible arrays, not chains of cons-cells.	2019-07-15 13:41:58 -04:00
parse_enr.c	Update copyright for 2019	2019-01-02 12:44:25 -05:00
parse_expr.c	Make the order of the header file includes consistent in backend modules.	2019-11-12 08:30:16 +05:30
parse_func.c	Require the schema qualification in pg_temp.type_name(arg).	2019-08-05 07:48:41 -07:00
parse_node.c	Make the order of the header file includes consistent in backend modules.	2019-11-12 08:30:16 +05:30
parse_oper.c	Fix inconsistencies and typos in the tree, take 9	2019-08-05 12:14:58 +09:00
parse_param.c	Phase 2 pgindent run for v12.	2019-05-22 13:04:48 -04:00
parse_relation.c	Make the order of the header file includes consistent in backend modules.	2019-11-12 08:30:16 +05:30
parse_target.c	Make the order of the header file includes consistent in backend modules.	2019-11-12 08:30:16 +05:30
parse_type.c	Make the order of the header file includes consistent in backend modules.	2019-11-12 08:30:16 +05:30
parse_utilcmd.c	Fix handling of GENERATED columns in CREATE TABLE LIKE INCLUDING DEFAULTS.	2019-09-25 17:30:42 -04:00
parser.c	Replace the data structure used for keyword lookup.	2019-01-06 17:02:57 -05:00
scan.l	Replace the data structure used for keyword lookup.	2019-01-06 17:02:57 -05:00
scansup.c	Make the order of the header file includes consistent in backend modules.	2019-11-12 08:30:16 +05:30

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.