Files
postgresql/src/backend/parser
Tom Lane 76d4abf2d9 Improve the recently-added support for properly pluralized error messages
by extending the ereport() API to cater for pluralization directly.  This
is better than the original method of calling ngettext outside the elog.c
code because (1) it avoids double translation, which wastes cycles and in
the worst case could give a wrong result; and (2) it avoids having to use
a different coding method in PL code than in the core backend.  The
client-side uses of ngettext are not touched since neither of these concerns
is very pressing in the client environment.  Per my proposal of yesterday.
2009-06-04 18:33:08 +00:00
..
2009-01-01 17:24:05 +00:00
2009-01-01 17:24:05 +00:00
2009-01-01 17:24:05 +00:00
2009-01-01 17:24:05 +00:00
2009-01-01 17:24:05 +00:00
2009-01-01 17:24:05 +00:00
2009-01-01 17:24:05 +00:00

$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)