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Reword SPI_ERROR_TRANSACTION errors in PL/pgSQL

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The previous message for SPI_ERROR_TRANSACTION claimed "cannot begin/end
transactions in PL/pgSQL", but that is no longer true.  Nevertheless,
the error can still happen, so reword the messages.  The error cases in
exec_prepare_plan() could never happen, so remove them.
This commit is contained in:
Peter Eisentraut 2018-06-26 11:38:46 +02:00
parent a40cff8956
commit c9301deb9b
3 changed files with 32 additions and 27 deletions
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16
src/pl/plpgsql/src/expected/plpgsql_transaction.out
View File

@ -409,7 +409,7 @@ $$;
INFO: read committed
INFO: repeatable read
INFO: read committed
-- error case
-- error cases
DO LANGUAGE plpgsql $$
BEGIN
SET TRANSACTION ISOLATION LEVEL REPEATABLE READ;
@ -418,6 +418,20 @@ $$;
ERROR: SET TRANSACTION ISOLATION LEVEL must be called before any query
CONTEXT: SQL statement "SET TRANSACTION ISOLATION LEVEL REPEATABLE READ"
PL/pgSQL function inline_code_block line 3 at SET
DO LANGUAGE plpgsql $$
BEGIN
SAVEPOINT foo;
END;
$$;
ERROR: unsupported transaction command in PL/pgSQL
CONTEXT: PL/pgSQL function inline_code_block line 3 at SQL statement
DO LANGUAGE plpgsql $$
BEGIN
EXECUTE 'COMMIT';
END;
$$;
ERROR: EXECUTE of transaction commands is not implemented
CONTEXT: PL/pgSQL function inline_code_block line 3 at EXECUTE
DROP TABLE test1;
DROP TABLE test2;
DROP TABLE test3;

29
src/pl/plpgsql/src/pl_exec.c
View File

@ -3965,27 +3965,8 @@ exec_prepare_plan(PLpgSQL_execstate *estate,
(void *) expr,
cursorOptions);
if (plan == NULL)
{
/* Some SPI errors deserve specific error messages */
switch (SPI_result)
{
case SPI_ERROR_COPY:
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("cannot COPY to/from client in PL/pgSQL")));
break;
case SPI_ERROR_TRANSACTION:
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("cannot begin/end transactions in PL/pgSQL"),
errhint("Use a BEGIN block with an EXCEPTION clause instead.")));
break;
default:
elog(ERROR, "SPI_prepare_params failed for \"%s\": %s",
expr->query, SPI_result_code_string(SPI_result));
break;
}
}
elog(ERROR, "SPI_prepare_params failed for \"%s\": %s",
expr->query, SPI_result_code_string(SPI_result));
if (keepplan)
SPI_keepplan(plan);
expr->plan = plan;
@ -4129,8 +4110,7 @@ exec_stmt_execsql(PLpgSQL_execstate *estate,
case SPI_ERROR_TRANSACTION:
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("cannot begin/end transactions in PL/pgSQL"),
errhint("Use a BEGIN block with an EXCEPTION clause instead.")));
errmsg("unsupported transaction command in PL/pgSQL")));
break;
default:
@ -4317,8 +4297,7 @@ exec_stmt_dynexecute(PLpgSQL_execstate *estate,
case SPI_ERROR_TRANSACTION:
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("cannot begin/end transactions in PL/pgSQL"),
errhint("Use a BEGIN block with an EXCEPTION clause instead.")));
errmsg("EXECUTE of transaction commands is not implemented")));
break;
default:

14
src/pl/plpgsql/src/sql/plpgsql_transaction.sql
View File

@ -335,13 +335,25 @@ BEGIN
END;
$$;
-- error case
-- error cases
DO LANGUAGE plpgsql $$
BEGIN
SET TRANSACTION ISOLATION LEVEL REPEATABLE READ;
END;
$$;
DO LANGUAGE plpgsql $$
BEGIN
SAVEPOINT foo;
END;
$$;
DO LANGUAGE plpgsql $$
BEGIN
EXECUTE 'COMMIT';
END;
$$;
DROP TABLE test1;
DROP TABLE test2;
DROP TABLE test3;