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postgresql/src/backend/parser
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Stephen Frost 5f508b6dea Make a dedicated AlterTblSpcStmt production 
Given that ALTER TABLESPACE has moved on from just existing for
general purpose rename/owner changes, it deserves its own top-level
production in the grammar.  This also cleans up the RenameStmt to
only ever be used for actual RENAMEs again- it really wasn't
appropriate to hide non-RENAME productions under there.

Noted by Alvaro.
 		2014-04-13 01:02:44 -04:00
..
.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 Disallow LATERAL references to the target table of an UPDATE/DELETE. 2014-01-11 19:03:12 -05:00
check_keywords.pl Update copyright for 2014 2014-01-07 16:05:30 -05:00
gram.y Make a dedicated AlterTblSpcStmt production 2014-04-13 01:02:44 -04:00
keywords.c Update copyright for 2014 2014-01-07 16:05:30 -05:00
kwlookup.c Update copyright for 2014 2014-01-07 16:05:30 -05:00
parse_agg.c Create infrastructure for moving-aggregate optimization. 2014-04-12 12:03:30 -04:00
parse_clause.c Update copyright for 2014 2014-01-07 16:05:30 -05:00
parse_coerce.c Update copyright for 2014 2014-01-07 16:05:30 -05:00
parse_collate.c Update copyright for 2014 2014-01-07 16:05:30 -05:00
parse_cte.c Update copyright for 2014 2014-01-07 16:05:30 -05:00
parse_expr.c Update copyright for 2014 2014-01-07 16:05:30 -05:00
parse_func.c Fix non-equivalence of VARIADIC and non-VARIADIC function call formats. 2014-04-03 22:02:24 -04:00
parse_node.c Update copyright for 2014 2014-01-07 16:05:30 -05:00
parse_oper.c Add new to_reg* functions for error-free OID lookups. 2014-04-08 10:27:56 -04:00
parse_param.c Update copyright for 2014 2014-01-07 16:05:30 -05:00
parse_relation.c Disallow LATERAL references to the target table of an UPDATE/DELETE. 2014-01-11 19:03:12 -05:00
parse_target.c Update copyright for 2014 2014-01-07 16:05:30 -05:00
parse_type.c Add new to_reg* functions for error-free OID lookups. 2014-04-08 10:27:56 -04:00
parse_utilcmd.c Avoid repeated name lookups during table and index DDL. 2014-02-17 09:33:31 -05:00
parser.c Update copyright for 2014 2014-01-07 16:05:30 -05:00
scan.l Fix length checking for Unicode identifiers containing escapes (U&"..."). 2014-02-13 14:24:42 -05:00
scansup.c Update copyright for 2014 2014-01-07 16:05:30 -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)