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postgres/src/backend/parser
Thomas G. Lockhart 31b9e3fc68 Temporarily back out fixes for unary minus parsing. 28 years ago
..
Makefile Hi, 28 years ago
README Add Var.varlevelup to code. More parser cleanup. 28 years ago
analyze.c Small HAVING cleanup. 28 years ago
gram.c I started adding the Having Clause and it works quite fine for 28 years ago
gram.y I started adding the Having Clause and it works quite fine for 28 years ago
keywords.c Allow parsing expressions with ") -" (scan.l, scan.c only). 28 years ago
parse.h Allow parsing expressions with ") -" (scan.l, scan.c only). 28 years ago
parse_agg.c I started adding the Having Clause and it works quite fine for 28 years ago
parse_clause.c Merge rename name page into alter table. Fix UNION with DISTINCT 28 years ago
parse_expr.c Back out char2-char16 removal. Add later. 28 years ago
parse_func.c pgindent run before 6.3 release, with Thomas' requested changes. 28 years ago
parse_node.c pgindent run before 6.3 release, with Thomas' requested changes. 28 years ago
parse_oper.c pgindent run before 6.3 release, with Thomas' requested changes. 28 years ago
parse_relation.c pgindent run before 6.3 release, with Thomas' requested changes. 28 years ago
parse_target.c pgindent run before 6.3 release, with Thomas' requested changes. 28 years ago
parse_type.c From: Darren King <darrenk@insightdist.com> 28 years ago
parser.c pgindent run before 6.3 release, with Thomas' requested changes. 28 years ago
scan.c Temporarily back out fixes for unary minus parsing. 28 years ago
scan.l Temporarily back out fixes for unary minus parsing. 28 years ago
scansup.c pgindent run before 6.3 release, with Thomas' requested changes. 28 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_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