Submitted by: @pavel-zotov

Run this:

set sqlda_display on;
set wng off;
set list on;
set echo on;

set sql dialect 1;

select 1e2 + 1e1 from rdb$database;
select 1e2 - 1e1 from rdb$database;
select 1e2 * 1e1 from rdb$database;
select 1e2 / 1e1 from rdb$database;

Expected result should finish with:

select 1e2 / 1e1 from rdb$database;

INPUT message field count: 0

OUTPUT message field count: 1
01: sqltype: 480 DOUBLE scale: 0 subtype: 0 len: 8
: name: DIVIDE alias: DIVIDE
: table: owner:

DIVIDE 10.00000000000000

But on WI-T4.0.0.639 output will finish like this:

select 1e2 / 1e1 from rdb$database;
Statement failed, SQLSTATE = 42000
Dynamic SQL Error
-expression evaluation not supported
-Division in dialect 1 must be between numeric data types

No troubles with dialect 3. No troubles in current 3.0.2 builds.

====== Test Details ======

See test for CORE3972