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postgresql/src/backend/parser
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Tom Lane b23c9fa929 Clean up a few failures to set collation fields in expression nodes. 
I'm not sure these have any non-cosmetic implications, but I'm not sure
they don't, either.  In particular, ensure the CaseTestExpr generated
by transformAssignmentIndirection to represent the base target column
carries the correct collation, because parse_collate.c won't fix that.
Tweak lsyscache.c API so that we can get the appropriate collation
without an extra syscache lookup.
 		2011-03-26 14:25:48 -04:00
..
.gitignore Convert cvsignore to gitignore, and add .gitignore for build targets. 2010-09-22 12:57:04 +02:00
Makefile Revise collation derivation method and expression-tree representation. 2011-03-19 20:30:08 -04:00
README Revise collation derivation method and expression-tree representation. 2011-03-19 20:30:08 -04:00
analyze.c Revise collation derivation method and expression-tree representation. 2011-03-19 20:30:08 -04:00
gram.y Make FKs valid at creation when added as column constraints. 2011-03-22 23:10:35 +00:00
keywords.c Stamp copyrights for year 2011. 2011-01-01 13:18:15 -05:00
kwlookup.c Stamp copyrights for year 2011. 2011-01-01 13:18:15 -05:00
parse_agg.c Revise collation derivation method and expression-tree representation. 2011-03-19 20:30:08 -04:00
parse_clause.c Revise collation derivation method and expression-tree representation. 2011-03-19 20:30:08 -04:00
parse_coerce.c Clean up a few failures to set collation fields in expression nodes. 2011-03-26 14:25:48 -04:00
parse_collate.c Throw error for indeterminate collation of an ORDER/GROUP/DISTINCT target. 2011-03-22 15:58:03 -04:00
parse_cte.c Revise collation derivation method and expression-tree representation. 2011-03-19 20:30:08 -04:00
parse_expr.c Revise collation derivation method and expression-tree representation. 2011-03-19 20:30:08 -04:00
parse_func.c Revise collation derivation method and expression-tree representation. 2011-03-19 20:30:08 -04:00
parse_node.c Pass collation to makeConst() instead of looking it up internally. 2011-03-25 20:10:42 -04:00
parse_oper.c Revise collation derivation method and expression-tree representation. 2011-03-19 20:30:08 -04:00
parse_param.c Fix handling of collation in SQL-language functions. 2011-03-24 20:30:23 -04:00
parse_relation.c Pass collation to makeConst() instead of looking it up internally. 2011-03-25 20:10:42 -04:00
parse_target.c Clean up a few failures to set collation fields in expression nodes. 2011-03-26 14:25:48 -04:00
parse_type.c Split CollateClause into separate raw and analyzed node types. 2011-03-11 16:28:18 -05:00
parse_utilcmd.c Make FKs valid at creation when added as column constraints. 2011-03-22 23:10:35 +00:00
parser.c Stamp copyrights for year 2011. 2011-01-01 13:18:15 -05:00
scan.l Stamp copyrights for year 2011. 2011-01-01 13:18:15 -05:00
scansup.c Stamp copyrights for year 2011. 2011-01-01 13:18:15 -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)