postgresql

History

Alvaro Herrera 8237f27b50 get_relid_attribute_name is dead, long live get_attname The modern way is to use a missing_ok argument instead of two separate almost-identical routines, so do that. Author: Michaël Paquier Reviewed-by: Álvaro Herrera Discussion: https://postgr.es/m/20180201063212.GE6398@paquier.xyz		2018-02-12 19:33:15 -03:00
..
.gitignore	Convert cvsignore to gitignore, and add .gitignore for build targets.	2010-09-22 12:57:04 +02:00
Makefile	Add infrastructure to support EphemeralNamedRelation references.	2017-03-31 23:17:18 -05:00
README	Move keywords.c/kwlookup.c into src/common/.	2016-03-23 20:22:08 -04:00
analyze.c	Update copyright for 2018	2018-01-02 23:30:12 -05:00
check_keywords.pl	Update copyright for 2018	2018-01-02 23:30:12 -05:00
gram.y	Support all SQL:2011 options for window frame clauses.	2018-02-07 00:06:56 -05:00
parse_agg.c	Fix oversight in CALL argument handling, and do some minor cleanup.	2018-02-10 13:05:14 -05:00
parse_clause.c	Fix oversight in CALL argument handling, and do some minor cleanup.	2018-02-10 13:05:14 -05:00
parse_coerce.c	Update copyright for 2018	2018-01-02 23:30:12 -05:00
parse_collate.c	Update copyright for 2018	2018-01-02 23:30:12 -05:00
parse_cte.c	Update copyright for 2018	2018-01-02 23:30:12 -05:00
parse_enr.c	Update copyright for 2018	2018-01-02 23:30:12 -05:00
parse_expr.c	Fix oversight in CALL argument handling, and do some minor cleanup.	2018-02-10 13:05:14 -05:00
parse_func.c	Fix oversight in CALL argument handling, and do some minor cleanup.	2018-02-10 13:05:14 -05:00
parse_node.c	Update copyright for 2018	2018-01-02 23:30:12 -05:00
parse_oper.c	Update copyright for 2018	2018-01-02 23:30:12 -05:00
parse_param.c	Update copyright for 2018	2018-01-02 23:30:12 -05:00
parse_relation.c	get_relid_attribute_name is dead, long live get_attname	2018-02-12 19:33:15 -03:00
parse_target.c	Update copyright for 2018	2018-01-02 23:30:12 -05:00
parse_type.c	Update copyright for 2018	2018-01-02 23:30:12 -05:00
parse_utilcmd.c	get_relid_attribute_name is dead, long live get_attname	2018-02-12 19:33:15 -03:00
parser.c	Update copyright for 2018	2018-01-02 23:30:12 -05:00
scan.l	Update copyright for 2018	2018-01-02 23:30:12 -05:00
scansup.c	Update copyright for 2018	2018-01-02 23:30:12 -05:00

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.