rdelaage
/
postgresql
mirror of https://git.postgresql.org/git/postgresql.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
postgresql/src/backend/parser
History
Tom Lane b7d6795445 Disallow comments on columns of relation types other than tables, views, 
and composite types, which are the only relkinds for which pg_dump support
exists for dumping column comments.  There is no obvious usefulness for
comments on columns of sequences or toast tables; and while comments on
index columns might have some value, it's not worth the risk of compatibility
problems due to possible changes in the algorithm for assigning names to
index columns.  Per discussion.

In consequence, remove now-dead code for copying such comments in CREATE TABLE
LIKE.
 		2009-12-22 23:54:17 +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 Avoid a premature coercion failure in transformSetOperationTree() when 2009-12-16 22:24:13 +00:00
gram.y Support ORDER BY within aggregate function calls, at long last providing a 2009-12-15 17:57:48 +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 Support ORDER BY within aggregate function calls, at long last providing a 2009-12-15 17:57:48 +00:00
parse_clause.c Support ORDER BY within aggregate function calls, at long last providing a 2009-12-15 17:57:48 +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 Support ORDER BY within aggregate function calls, at long last providing a 2009-12-15 17:57:48 +00:00
parse_func.c Support ORDER BY within aggregate function calls, at long last providing a 2009-12-15 17:57:48 +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 Disallow comments on columns of relation types other than tables, views, 2009-12-22 23:54:17 +00:00
parser.c Remove pg_parse_string_token() --- not needed anymore. 2009-11-12 01:13:12 +00:00
scan.l Remove plpgsql's separate lexer (finally!), in favor of using the core lexer 2009-11-12 00:13:00 +00:00
scansup.c Remove plpgsql's separate lexer (finally!), in favor of using the core lexer 2009-11-12 00:13:00 +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)