Invalid blob id when add a new blob column of type text and update another field
--------------------------------------------------------------------------------

                 Key: CORE-5600
                 URL: http://tracker.firebirdsql.org/browse/CORE-5600
             Project: Firebird Core
          Issue Type: Bug
    Affects Versions: 3.0.2
         Environment: Windows 10 Enterprise
            Reporter: bug tracker
            Priority: Blocker


I can create the issue using folowing steps:
step 1:
-------
CREATE TABLE Operation ( ID BIGINT NOT NULL,Operation_Type BIGINT NOT 
NULL,DATE_CREATE BIGINT NOT NULL,DATE_OPERATION BIGINT NOT NULL,Code BIGINT NOT 
NULL,NAME BLOB SUB_TYPE TEXT CHARACTER SET UTF8 DEFAULT '' NOT NULL,D_VALUE 
DOUBLE PRECISION DEFAULT 0 NOT NULL )

step 2:
-------
ALTER TABLE Operation ADD CONSTRAINT operation_pk_1 PRIMARY KEY ( ID )

step 3:
-------
execute block
as
declare i bigint = 1;
begin
  while (i <= 20) do
  begin
        update or insert into Operation(ID, 
Operation_Type,DATE_CREATE,DATE_OPERATION,Code,NAME,D_VALUE) values 
(:i,0,132345666243423423,132345666243423423,:i,'test',1);
        i = i + 1;
  end
end

step 4:
-------
ALTER TABLE Operation ADD surname BLOB SUB_TYPE TEXT CHARACTER SET UTF8 DEFAULT 
'' NOT NULL

step 5:
-------
update operation set code=2 where id=2

When update is done if I run Select * from Operation, the error 'Invalid Blob 
Id' appears.

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