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postgres/src/backend/parser
Tom Lane fa5c8a055a Cross-data-type comparisons are now indexable by btrees, pursuant to my 22 years ago
..
.cvsignore
Makefile Adopt latest bison's spelling of 'syntax error' rather than 'parse error' 23 years ago
README
analyze.c Fix for this problem: 22 years ago
gram.y Implement isolation levels read uncommitted and repeatable read as acting 22 years ago
keywords.c Implement isolation levels read uncommitted and repeatable read as acting 22 years ago
parse_agg.c Fix grammatical error introduced into error message. 23 years ago
parse_clause.c Various message fixes, among those fixes for the previous round of fixes 23 years ago
parse_coerce.c More message editing, some suggested by Alvaro Herrera 23 years ago
parse_expr.c Various message fixes, among those fixes for the previous round of fixes 23 years ago
parse_func.c Cross-data-type comparisons are now indexable by btrees, pursuant to my 22 years ago
parse_node.c Update copyrights to 2003. 23 years ago
parse_oper.c Fix binary_oper_exact() so that the heuristic 'an unknown literal on 23 years ago
parse_relation.c Message editing: remove gratuitous variations in message wording, standardize 23 years ago
parse_target.c Message editing: remove gratuitous variations in message wording, standardize 23 years ago
parse_type.c Improve error reporting in parseTypeString(), motivated by confusing 23 years ago
parser.c Update copyrights to 2003. 23 years ago
scan.l Make sure that -- comments extend to the end of the line. This fixes the 23 years ago
scansup.c Update copyrights to 2003. 23 years ago

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