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Bruce Momjian 9218689b69 Attached are two patches to implement and document anonymous composite ... types for Table Functions, as previously proposed on HACKERS. Here is a brief explanation: 1. Creates a new pg_type typtype: 'p' for pseudo type (currently either 'b' for base or 'c' for catalog, i.e. a class). 2. Creates new builtin type of typtype='p' named RECORD. This is the first of potentially several pseudo types. 3. Modify FROM clause grammer to accept: SELECT * FROM my_func() AS m(colname1 type1, colname2 type1, ...) where m is the table alias, colname1, etc are the column names, and type1, etc are the column types. 4. When typtype == 'p' and the function return type is RECORD, a list of column defs is required, and when typtype != 'p', it is disallowed. 5. A check was added to ensure that the tupdesc provide via the parser and the actual return tupdesc match in number and type of attributes. When creating a function you can do: CREATE FUNCTION foo(text) RETURNS setof RECORD ... When using it you can do: SELECT * from foo(sqlstmt) AS (f1 int, f2 text, f3 timestamp) or SELECT * from foo(sqlstmt) AS f(f1 int, f2 text, f3 timestamp) or SELECT * from foo(sqlstmt) f(f1 int, f2 text, f3 timestamp) Included in the patches are adjustments to the regression test sql and expected files, and documentation. p.s. This potentially solves (or at least improves) the issue of builtin Table Functions. They can be bootstrapped as returning RECORD, and we can wrap system views around them with properly specified column defs. For example: CREATE VIEW pg_settings AS SELECT s.name, s.setting FROM show_all_settings()AS s(name text, setting text); Then we can also add the UPDATE RULE that I previously posted to pg_settings, and have pg_settings act like a virtual table, allowing settings to be queried and set. Joe Conway		23 years ago
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common	Attached are two patches to implement and document anonymous composite	23 years ago
gist	Update copyright to 2002.	24 years ago
hash	>the extra level of struct naming for pd_opaque has no obvious	24 years ago
heap	This patch fixes one serious bug (runaway INSERT) and a few rare (and	23 years ago
index	Update copyright to 2002.	24 years ago
nbtree	There already was a macro PageGetItemId; this is now used in (almost)	24 years ago
rtree	Here is a patch for a memory leak in rtree.c, version 7.2.1 (in code	24 years ago
transam	Implement WAL log location control using "-X" or PGXLOG.	23 years ago
Makefile	Fix relative path references so that make knowns which dependencies refer	25 years ago