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Attached is an update to contrib/tablefunc. It introduces a new

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function, connectby(), which can serve as a reference implementation for

the changes made in the last few days -- namely the ability of a
function to return an entire tuplestore, and the ability of a function
to make use of the query provided "expected" tuple description.

Description:

   connectby(text relname, text keyid_fld, text parent_keyid_fld,
     text start_with, int max_depth [, text branch_delim])
   - returns keyid, parent_keyid, level, and an optional branch string
   - requires anonymous composite type syntax in the FROM clause. See
     the instructions in the documentation below.

Joe Conway
This commit is contained in:
Bruce Momjian
2002-09-02 05:44:05 +00:00
parent 9fd842c4b2
commit 6aa4482f2f
5 changed files with 602 additions and 12 deletions
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contrib/tablefunc/tablefunc.h
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@ -34,5 +34,6 @@
*/
extern Datum normal_rand(PG_FUNCTION_ARGS);
extern Datum crosstab(PG_FUNCTION_ARGS);
extern Datum connectby_text(PG_FUNCTION_ARGS);
#endif /* TABLEFUNC_H */