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postgres/src/backend/parser
History
Peter Eisentraut 7c31742a07
Remove all traces that suggest that a non-Bison yacc might be supported, and 		17 years ago
..
.cvsignore Remove all traces that suggest that a non-Bison yacc might be supported, and 17 years ago
Makefile Remove all traces that suggest that a non-Bison yacc might be supported, and 17 years ago
README Small wording improvements for source code READMEs. 17 years ago
analyze.c Extend the parser location infrastructure to include a location field in 17 years ago
gram.y Extend the parser location infrastructure to include a location field in 17 years ago
keywords.c Remove all traces that suggest that a non-Bison yacc might be supported, and 17 years ago
parse_agg.c Extend the parser location infrastructure to include a location field in 17 years ago
parse_clause.c Extend the parser location infrastructure to include a location field in 17 years ago
parse_coerce.c Extend the parser location infrastructure to include a location field in 17 years ago
parse_expr.c Extend the parser location infrastructure to include a location field in 17 years ago
parse_func.c Extend the parser location infrastructure to include a location field in 17 years ago
parse_node.c Extend the parser location infrastructure to include a location field in 17 years ago
parse_oper.c Extend the parser location infrastructure to include a location field in 17 years ago
parse_relation.c Extend the parser location infrastructure to include a location field in 17 years ago
parse_target.c Extend the parser location infrastructure to include a location field in 17 years ago
parse_type.c Some minor further cleanup around A_Const. Don't attach a typecast in 17 years ago
parse_utilcmd.c Extend the parser location infrastructure to include a location field in 17 years ago
parser.c Remove all traces that suggest that a non-Bison yacc might be supported, and 17 years ago
scan.l Remove all traces that suggest that a non-Bison yacc might be supported, and 17 years ago
scansup.c Update copyrights in source tree to 2008. 18 years ago

README 

$PostgreSQL: pgsql/src/backend/parser/README,v 1.10 2008/04/09 01:00:46 momjian 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
keywords.c	turn keywords into specific tokens
gram.y		parse the tokens and fill query-type-specific structures
analyze.c	top level of parse analysis for optimizable queries
parse_clause.c	handle clauses like WHERE, ORDER BY, GROUP BY, ...
parse_coerce.c	handle coercing expressions to different data types
parse_expr.c	handle expressions like col, col + 3, x = 3 or x = 4
parse_oper.c	handle operators in expressions
parse_agg.c	handle aggregates, like SUM(col1),  AVG(col2), ...
parse_func.c	handle functions, table.column and column identifiers
parse_node.c	create nodes for various structures
parse_target.c	handle the result list of the query
parse_relation.c support routines for tables and column handling
parse_type.c	support routines for data type handling
parse_utilcmd.c	parse analysis for utility commands (done at execution time)