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Robert Haas 5223ddacdc Remove residual NULL-pstate handling in addRangeTableEntry. 
Passing a NULL pstate wouldn't actually work, because isLockedRefname()
isn't prepared to cope with it; and there hasn't been any in-core code
that tries in over a decade.  So just remove the residual NULL handling.

Spotted by Coverity; analysis and patch by Michael Paquier.
 		2015-03-03 16:31:26 -05:00
..
.gitignore Convert cvsignore to gitignore, and add .gitignore for build targets. 2010-09-22 12:57:04 +02:00
Makefile Refactor flex and bison make rules 2012-10-11 06:57:04 -04:00
README Revise collation derivation method and expression-tree representation. 2011-03-19 20:30:08 -04:00
analyze.c Update copyright for 2015 2015-01-06 11:43:47 -05:00
check_keywords.pl Update copyright for 2015 2015-01-06 11:43:47 -05:00
gram.y Improve parser's one-extra-token lookahead mechanism. 2015-02-24 17:53:45 -05:00
keywords.c Update copyright for 2015 2015-01-06 11:43:47 -05:00
kwlookup.c Update copyright for 2015 2015-01-06 11:43:47 -05:00
parse_agg.c Update copyright for 2015 2015-01-06 11:43:47 -05:00
parse_clause.c Get rid of multiple applications of transformExpr() to the same tree. 2015-02-22 13:59:09 -05:00
parse_coerce.c Update copyright for 2015 2015-01-06 11:43:47 -05:00
parse_collate.c Update copyright for 2015 2015-01-06 11:43:47 -05:00
parse_cte.c Update copyright for 2015 2015-01-06 11:43:47 -05:00
parse_expr.c Further tweaking of raw grammar output to distinguish different inputs. 2015-02-23 12:46:50 -05:00
parse_func.c Update copyright for 2015 2015-01-06 11:43:47 -05:00
parse_node.c Update copyright for 2015 2015-01-06 11:43:47 -05:00
parse_oper.c Update copyright for 2015 2015-01-06 11:43:47 -05:00
parse_param.c Update copyright for 2015 2015-01-06 11:43:47 -05:00
parse_relation.c Remove residual NULL-pstate handling in addRangeTableEntry. 2015-03-03 16:31:26 -05:00
parse_target.c Update copyright for 2015 2015-01-06 11:43:47 -05:00
parse_type.c Update copyright for 2015 2015-01-06 11:43:47 -05:00
parse_utilcmd.c Get rid of multiple applications of transformExpr() to the same tree. 2015-02-22 13:59:09 -05:00
parser.c Improve parser's one-extra-token lookahead mechanism. 2015-02-24 17:53:45 -05:00
scan.l Prevent duplicate escape-string warnings when using pg_stat_statements. 2015-01-22 18:11:00 -05:00
scansup.c Update copyright for 2015 2015-01-06 11:43:47 -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)