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Commitca4103025dleft a few loose ends. The most important one (broken pg_dump output) is already fixed by virtue of commit3b23552ad8, but some things remained: * When ALTER TABLE rewrites tables, the indexes must remain in the tablespace they were originally in. This didn't work because index recreation during ALTER TABLE runs manufactured SQL (yuck), which runs afoul of default_tablespace in competition with the parent relation tablespace. To fix, reset default_tablespace to the empty string temporarily, and add the TABLESPACE clause as appropriate. * Setting a partitioned rel's tablespace to the database default is confusing; if it worked, it would direct the partitions to that tablespace regardless of default_tablespace. But in reality it does not work, and making it work is a larger project. Therefore, throw an error when this condition is detected, to alert the unwary. Add some docs and tests, too. Author: Álvaro Herrera Discussion: https://postgr.es/m/CAKJS1f_1c260nOt_vBJ067AZ3JXptXVRohDVMLEBmudX1YEx-A@mail.gmail.com
src/backend/parser/README 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 gram.y parse the tokens and produce a "raw" parse tree analyze.c top level of parse analysis for optimizable queries parse_agg.c handle aggregates, like SUM(col1), AVG(col2), ... parse_clause.c handle clauses like WHERE, ORDER BY, GROUP BY, ... parse_coerce.c handle coercing expressions to different data types parse_collate.c assign collation information in completed expressions parse_cte.c handle Common Table Expressions (WITH clauses) parse_expr.c handle expressions like col, col + 3, x = 3 or x = 4 parse_func.c handle functions, table.column and column identifiers parse_node.c create nodes for various structures parse_oper.c handle operators in expressions parse_param.c handle Params (for the cases used in the core backend) parse_relation.c support routines for tables and column handling parse_target.c handle the result list of the query parse_type.c support routines for data type handling parse_utilcmd.c parse analysis for utility commands (done at execution time) See also src/common/keywords.c, which contains the table of standard keywords and the keyword lookup function. We separated that out because various frontend code wants to use it too.