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postgresql/src/backend/parser
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Tom Lane eab5d643b2 Make FLOAT(p) measure the precision p in bits, not decimal digits, to 
match the SQL standard.  Document FLOAT and FLOAT(p) notations in
datatype.sgml.  Per recent pghackers discussion.
2003-06-17 23:12:36 +00:00
..
.cvsignore Add .cvsignore file so cvs doesn't complain if you have lex/yacc 1999-03-21 02:43:58 +00:00
analyze.c Allow GROUP BY, ORDER BY, DISTINCT targets to be unknown literals, 2003-06-16 02:03:38 +00:00
gram.y Make FLOAT(p) measure the precision p in bits, not decimal digits, to 2003-06-17 23:12:36 +00:00
keywords.c Allow Win32 to compile under MinGW. Major changes are: 2003-05-15 16:35:30 +00:00
Makefile Adopt latest bison's spelling of 'syntax error' rather than 'parse error' 2003-05-29 20:40:36 +00:00
parse_agg.c Implement outer-level aggregates to conform to the SQL spec, with 2003-06-06 15:04:03 +00:00
parse_clause.c Allow GROUP BY, ORDER BY, DISTINCT targets to be unknown literals, 2003-06-16 02:03:38 +00:00
parse_coerce.c Cause CHAR(n) to TEXT or VARCHAR conversion to automatically strip trailing 2003-05-26 00:11:29 +00:00
parse_expr.c Infrastructure for deducing Param types from context, in the same way 2003-04-29 22:13:11 +00:00
parse_func.c Implement outer-level aggregates to conform to the SQL spec, with 2003-06-06 15:04:03 +00:00
parse_node.c Infrastructure for deducing Param types from context, in the same way 2003-04-29 22:13:11 +00:00
parse_oper.c Cause CHAR(n) to TEXT or VARCHAR conversion to automatically strip trailing 2003-05-26 00:11:29 +00:00
parse_relation.c Replace cryptic 'Unknown kind of return type' messages with something 2003-06-15 17:59:10 +00:00
parse_target.c markTargetListOrigin neglected to handle outer-scope Vars properly; 2003-05-31 19:03:34 +00:00
parse_type.c Infrastructure for deducing Param types from context, in the same way 2003-04-29 22:13:11 +00:00
parser.c Not sure why parser() was still doing clearerr(stdin) ... but it's 2003-05-05 01:59:02 +00:00
README cleanup 1998-08-23 14:43:46 +00:00
scan.l Ensure that in all flex lexers that are part of the backend, a 2003-05-29 22:30:02 +00:00
scansup.c Be careful to include postgres.h *before* any system headers, to ensure 2002-09-05 00:43:07 +00:00

README 

This directory does more than tokenize and parse SQL queries.  It also
creates Query structures for the various complex queries that is passed
to the optimizer and then executor.

parser.c	things start here
scan.l		break query into tokens
scansup.c	handle escapes in input
keywords.c	turn keywords into specific tokens
gram.y		parse the tokens and fill query-type-specific structures
analyze.c	handle post-parse processing for each query type
parse_clause.c	handle clauses like WHERE, ORDER BY, GROUP BY, ...
parse_coerce.c	used for coercing expressions of different types
parse_expr.c	handle expressions like col, col + 3, x = 3 or x = 4
parse_oper.c	handle operations 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 type handling