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postgres/src/backend/parser
Thomas G. Lockhart dfdff4e0f1 First workaround solution for Jan's column constraint attributes. 26 years ago
..
.cvsignore Add .cvsignore file so cvs doesn't complain if you have lex/yacc 27 years ago
Makefile Removed MBFLAGS from makefiles since it's now done in include/config.h. 26 years ago
README cleanup 28 years ago
analyze.c Carry column aliases from the parser frontend. Enables queries like 26 years ago
gram.y First workaround solution for Jan's column constraint attributes. 26 years ago
keywords.c Implement reindex command 26 years ago
parse_agg.c Carry column aliases from the parser frontend. Enables queries like 26 years ago
parse_clause.c Fix missing lfirst() in ListTableAsAttrs(). This code 26 years ago
parse_coerce.c Implement "date/time grand unification". 26 years ago
parse_expr.c Carry column aliases from the parser frontend. Enables queries like 26 years ago
parse_func.c Carry column aliases from the parser frontend. Enables queries like 26 years ago
parse_node.c Add: 26 years ago
parse_oper.c Add: 26 years ago
parse_relation.c Carry column aliases from the parser frontend. Enables queries like 26 years ago
parse_target.c Carry column aliases from the parser frontend. Enables queries like 26 years ago
parse_type.c Add: 26 years ago
parser.c Add: 26 years ago
scan.l Clean up scan.l's handling of \r vs \n --- they are reliably treated as 26 years ago
scansup.c Add: 26 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