#
# MDEV-316 lp:1009085 Assertion failed: warn_item, file item_cmpfunc.cc, line 3613
#
set names swe7;
select '' in ('',convert(0,time));
select case '' when '' then 1 when convert(0,time) then 2 end;

#
# Excessive optimization of Item_func_conv_charset:
#
select convert(0x0030 using ucs2) div 1, concat(convert(0x0030 using ucs2)) div 1;
select cast(convert(0x0030 using ucs2) as double), cast(concat(convert(0x0030 using ucs2)) as double);
select cast(convert(0x0030 using ucs2) as decimal(5.2)), cast(concat(convert(0x0030 using ucs2)) as decimal(5.2));
select cast(convert(_ucs2 0x0030 using latin1) as date), cast(concat(convert(_ucs2 0x0030 using latin1)) as date);