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Support INOUT arguments in procedures

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In a top-level CALL, the values of INOUT arguments will be returned as a
result row.  In PL/pgSQL, the values are assigned back to the input
arguments.  In other languages, the same convention as for return a
record from a function is used.  That does not require any code changes
in the PL implementations.

Reviewed-by: Pavel Stehule <pavel.stehule@gmail.com>
This commit is contained in:
Peter Eisentraut
2018-03-14 11:47:21 -04:00
parent 484a4a08ab
commit 33803f67f1
32 changed files with 792 additions and 50 deletions
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3
src/include/funcapi.h
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@ -187,7 +187,8 @@ extern int get_func_input_arg_names(Datum proargnames, Datum proargmodes,
extern int get_func_trftypes(HeapTuple procTup, Oid **p_trftypes);
extern char *get_func_result_name(Oid functionId);
extern TupleDesc build_function_result_tupdesc_d(Datum proallargtypes,
extern TupleDesc build_function_result_tupdesc_d(char prokind,
Datum proallargtypes,
Datum proargmodes,
Datum proargnames);
extern TupleDesc build_function_result_tupdesc_t(HeapTuple procTuple);