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postgresql/src/backend/parser
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Tom Lane 449a00fbbd Fix the raw-parsetree representation of star (as in SELECT * FROM or 
SELECT foo.*) so that it cannot be confused with a quoted identifier "*".
Instead create a separate node type A_Star to represent this notation.
Per pgsql-hackers discussion of 2007-Sep-27.
 		2008-08-30 01:39:14 +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 Remove all traces that suggest that a non-Bison yacc might be supported, and 2008-08-29 13:02:33 +00:00
README Small wording improvements for source code READMEs. 2008-04-09 01:00:46 +00:00
analyze.c Extend the parser location infrastructure to include a location field in 2008-08-28 23:09:48 +00:00
gram.y Fix the raw-parsetree representation of star (as in SELECT * FROM or 2008-08-30 01:39:14 +00:00
keywords.c Remove all traces that suggest that a non-Bison yacc might be supported, and 2008-08-29 13:02:33 +00:00
parse_agg.c Extend the parser location infrastructure to include a location field in 2008-08-28 23:09:48 +00:00
parse_clause.c Fix the raw-parsetree representation of star (as in SELECT * FROM or 2008-08-30 01:39:14 +00:00
parse_coerce.c Extend the parser location infrastructure to include a location field in 2008-08-28 23:09:48 +00:00
parse_expr.c Fix the raw-parsetree representation of star (as in SELECT * FROM or 2008-08-30 01:39:14 +00:00
parse_func.c Extend the parser location infrastructure to include a location field in 2008-08-28 23:09:48 +00:00
parse_node.c Extend the parser location infrastructure to include a location field in 2008-08-28 23:09:48 +00:00
parse_oper.c Extend the parser location infrastructure to include a location field in 2008-08-28 23:09:48 +00:00
parse_relation.c Extend the parser location infrastructure to include a location field in 2008-08-28 23:09:48 +00:00
parse_target.c Fix the raw-parsetree representation of star (as in SELECT * FROM or 2008-08-30 01:39:14 +00:00
parse_type.c Fix the raw-parsetree representation of star (as in SELECT * FROM or 2008-08-30 01:39:14 +00:00
parse_utilcmd.c Extend the parser location infrastructure to include a location field in 2008-08-28 23:09:48 +00:00
parser.c Remove all traces that suggest that a non-Bison yacc might be supported, and 2008-08-29 13:02:33 +00:00
scan.l Remove all traces that suggest that a non-Bison yacc might be supported, and 2008-08-29 13:02:33 +00:00
scansup.c Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +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)