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postgresql/src/backend/parser
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Tom Lane e5536e77a5 Move exprType(), exprTypmod(), expression_tree_walker(), and related routines 
into nodes/nodeFuncs, so as to reduce wanton cross-subsystem #includes inside
the backend.  There's probably more that should be done along this line,
but this is a start anyway.
 		2008-08-25 22:42:34 +00:00
..
.cvsignore Add .cvsignore file so cvs doesn't complain if you have lex/yacc 1999-03-21 02:43:58 +00:00
Makefile Refactor backend makefiles to remove lots of duplicate code 2008-02-19 10:30:09 +00:00
README Small wording improvements for source code READMEs. 2008-04-09 01:00:46 +00:00
analyze.c Move exprType(), exprTypmod(), expression_tree_walker(), and related routines 2008-08-25 22:42:34 +00:00
gram.y Implement SQL-spec RETURNS TABLE syntax for functions. 2008-07-18 03:32:53 +00:00
keywords.c Support "variadic" functions, which can accept a variable number of arguments 2008-07-16 01:30:23 +00:00
parse_agg.c Move exprType(), exprTypmod(), expression_tree_walker(), and related routines 2008-08-25 22:42:34 +00:00
parse_clause.c Move exprType(), exprTypmod(), expression_tree_walker(), and related routines 2008-08-25 22:42:34 +00:00
parse_coerce.c Move exprType(), exprTypmod(), expression_tree_walker(), and related routines 2008-08-25 22:42:34 +00:00
parse_expr.c Move exprType(), exprTypmod(), expression_tree_walker(), and related routines 2008-08-25 22:42:34 +00:00
parse_func.c Move exprType(), exprTypmod(), expression_tree_walker(), and related routines 2008-08-25 22:42:34 +00:00
parse_node.c Move exprType(), exprTypmod(), expression_tree_walker(), and related routines 2008-08-25 22:42:34 +00:00
parse_oper.c Move exprType(), exprTypmod(), expression_tree_walker(), and related routines 2008-08-25 22:42:34 +00:00
parse_relation.c Move exprType(), exprTypmod(), expression_tree_walker(), and related routines 2008-08-25 22:42:34 +00:00
parse_target.c Move exprType(), exprTypmod(), expression_tree_walker(), and related routines 2008-08-25 22:42:34 +00:00
parse_type.c Some minor further cleanup around A_Const. Don't attach a typecast in 2008-04-29 20:44:49 +00:00
parse_utilcmd.c Move exprType(), exprTypmod(), expression_tree_walker(), and related routines 2008-08-25 22:42:34 +00:00
parser.c Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +00:00
scan.l Add "%option noinput" to the scanners to avoid compiler warnings. GCC 4.3 2008-05-09 15:36:31 +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)