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postgresql/src/backend/parser
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Tom Lane 9ab6c3033e Make expression locations for LIKE and SIMILAR TO constructs uniformly point 
at the first keyword of the expression, rather than drawing a rather
artificial distinction between the ESCAPE subclause and the rest.
Per gripe from Gokulakannan Somasundaram and subsequent discusssion.
 		2009-11-04 23:15:08 +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 Implement parser hooks for processing ColumnRef and ParamRef nodes, as per my 2009-10-31 01:41:31 +00:00
README Implement parser hooks for processing ColumnRef and ParamRef nodes, as per my 2009-10-31 01:41:31 +00:00
analyze.c Implement parser hooks for processing ColumnRef and ParamRef nodes, as per my 2009-10-31 01:41:31 +00:00
gram.y Make expression locations for LIKE and SIMILAR TO constructs uniformly point 2009-11-04 23:15:08 +00:00
keywords.c Tweak the core scanner so that it can be used by plpgsql too. 2009-07-14 20:24:10 +00:00
kwlookup.c Tweak the core scanner so that it can be used by plpgsql too. 2009-07-14 20:24:10 +00:00
parse_agg.c 8.4 pgindent run, with new combined Linux/FreeBSD/MinGW typedef list 2009-06-11 14:49:15 +00:00
parse_clause.c Make FOR UPDATE/SHARE in the primary query not propagate into WITH queries; 2009-10-27 17:11:18 +00:00
parse_coerce.c Implement parser hooks for processing ColumnRef and ParamRef nodes, as per my 2009-10-31 01:41:31 +00:00
parse_cte.c Make FOR UPDATE/SHARE in the primary query not propagate into WITH queries; 2009-10-27 17:11:18 +00:00
parse_expr.c Implement parser hooks for processing ColumnRef and ParamRef nodes, as per my 2009-10-31 01:41:31 +00:00
parse_func.c Implement parser hooks for processing ColumnRef and ParamRef nodes, as per my 2009-10-31 01:41:31 +00:00
parse_node.c Implement parser hooks for processing ColumnRef and ParamRef nodes, as per my 2009-10-31 01:41:31 +00:00
parse_oper.c Fix get_sort_group_operators() so that it doesn't think arrays can be grouped 2009-06-13 15:42:09 +00:00
parse_param.c Implement parser hooks for processing ColumnRef and ParamRef nodes, as per my 2009-10-31 01:41:31 +00:00
parse_relation.c Implement parser hooks for processing ColumnRef and ParamRef nodes, as per my 2009-10-31 01:41:31 +00:00
parse_target.c Implement parser hooks for processing ColumnRef and ParamRef nodes, as per my 2009-10-31 01:41:31 +00:00
parse_type.c Make backend header files C++ safe 2009-07-16 06:33:46 +00:00
parse_utilcmd.c Code review for LIKE INCLUDING patch --- clean up some cosmetic and not 2009-10-13 00:53:08 +00:00
parser.c Tweak the core scanner so that it can be used by plpgsql too. 2009-07-14 20:24:10 +00:00
scan.l Sync psql's scanner with recent changes in backend scanner's flex rules. 2009-09-27 03:27:24 +00:00
scansup.c Update copyright for 2009. 2009-01-01 17:24:05 +00:00

README 

$PostgreSQL: pgsql/src/backend/parser/README,v 1.11 2009/10/31 01:41:31 tgl 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
kwlookup.c	turn keywords into specific tokens
keywords.c	table of standard keywords (passed to kwlookup.c)
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_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)