postgres

History

Tom Lane 0b33790421 Clean up the mess around EXPLAIN and materialized views.

Revert the matview-related changes in explain.c's API, as per recent
complaint from Robert Haas.  The reason for these appears to have been
principally some ill-considered choices around having intorel_startup do
what ought to be parse-time checking, plus a poor arrangement for passing
it the view parsetree it needs to store into pg_rewrite when creating a
materialized view.  Do the latter by having parse analysis stick a copy
into the IntoClause, instead of doing it at runtime.  (On the whole,
I seriously question the choice to represent CREATE MATERIALIZED VIEW as a
variant of SELECT INTO/CREATE TABLE AS, because that means injecting even
more complexity into what was already a horrid legacy kluge.  However,
I didn't go so far as to rethink that choice ... yet.)

I also moved several error checks into matview parse analysis, and
made the check for external Params in a matview more accurate.

In passing, clean things up a bit more around interpretOidsOption(),
and fix things so that we can use that to force no-oids for views,
sequences, etc, thereby eliminating the need to cons up "oids = false"
options when creating them.

catversion bump due to change in IntoClause.  (I wonder though if we
really need readfuncs/outfuncs support for IntoClause anymore.)

2013-04-12 19:25:31 -04:00

.gitignore

Convert cvsignore to gitignore, and add .gitignore for build targets.

2010-09-22 12:57:04 +02:00

analyze.c

Clean up the mess around EXPLAIN and materialized views.

2013-04-12 19:25:31 -04:00

check_keywords.pl

Update copyrights for 2013

2013-01-01 17:15:01 -05:00

gram.y

Clean up the mess around EXPLAIN and materialized views.

2013-04-12 19:25:31 -04:00

keywords.c

Update copyrights for 2013

2013-01-01 17:15:01 -05:00

kwlookup.c

Update copyrights for 2013

2013-01-01 17:15:01 -05:00

Makefile

Refactor flex and bison make rules

2012-10-11 06:57:04 -04:00

parse_agg.c

Make some spelling more consistent

2013-01-05 08:25:21 -05:00

parse_clause.c

Clean up the mess around EXPLAIN and materialized views.

2013-04-12 19:25:31 -04:00

parse_coerce.c

Update copyrights for 2013

2013-01-01 17:15:01 -05:00

parse_collate.c

Update copyrights for 2013

2013-01-01 17:15:01 -05:00

parse_cte.c

Update copyrights for 2013

2013-01-01 17:15:01 -05:00

parse_expr.c

Make some spelling more consistent

2013-01-05 08:25:21 -05:00

parse_func.c

Add infrastructure for storing a VARIADIC ANY function's VARIADIC flag.

2013-01-21 20:26:15 -05:00

parse_node.c

Update copyrights for 2013

2013-01-01 17:15:01 -05:00

parse_oper.c

Allow CREATE TABLE IF EXIST so succeed if the schema is nonexistent

2013-01-26 13:24:50 -05:00

parse_param.c

Clean up the mess around EXPLAIN and materialized views.

2013-04-12 19:25:31 -04:00

parse_relation.c

Clean up the mess around EXPLAIN and materialized views.

2013-04-12 19:25:31 -04:00

parse_target.c

Update copyrights for 2013

2013-01-01 17:15:01 -05:00

parse_type.c

Allow CREATE TABLE IF EXIST so succeed if the schema is nonexistent

2013-01-26 13:24:50 -05:00

parse_utilcmd.c

Clean up the mess around EXPLAIN and materialized views.

2013-04-12 19:25:31 -04:00

parser.c

Update copyrights for 2013

2013-01-01 17:15:01 -05:00

README

Revise collation derivation method and expression-tree representation.

2011-03-19 20:30:08 -04:00

scan.l

Change the way UESCAPE is lexed, to reduce the size of the flex tables.

2013-03-14 19:04:43 +02:00

scansup.c

Update copyrights for 2013

2013-01-01 17:15:01 -05:00

README

src/backend/parser/README

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_collate.c	assign collation information in completed expressions
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)