Package constants (#8916). Line "Dynamic SQL Error" can be missing in some queries

[Pavel Zotov]

This is link to following 6x snapshots:

6.0.0.1942-20260511_211500-c2d905a -- last prior package constants;

6.0.0.1942-20260511_214515-7589a56 -- first with package constants (#8916)

Consider command:

echo select 1 from rdb$relations,rdb$indices order by rdb$relation_name rows 1; | isql localhost:employee

On 6.0.0.1942-20260511_211500-c2d905a its output will be:

==========

Statement failed, SQLSTATE = 42702
Dynamic SQL Error
-SQL error code = -204
-Ambiguous field name between table "SYSTEM"."RDB$RELATIONS" and table "SYSTEM"."RDB$INDICES"
-RDB$RELATION_NAME

==========

On 6.0.0.1942-20260511_214515-7589a56 the line "Dynamic SQL Error" is missing:

==========

Statement failed, SQLSTATE = 42702
SQL error code = -204
-Ambiguous field name between table "SYSTEM"."RDB$RELATIONS" and table "SYSTEM"."RDB$INDICES"
-RDB$RELATION_NAME

==========

Is it expected ?

PS.

Such difference does not appear in all cases.

For example, in this case all parts of error message will be same:

echo select foo from rdb$relations,rdb$indices order by rdb$relation_name rows 1; | C:\FB\60sc\isql /:employee

Statement failed, SQLSTATE = 42S22
Dynamic SQL Error
-SQL error code = -206
-Column unknown
-"FOO"