C:\MIX\firebird\fb25\bin>isql /3255:C:\TEMP\1test\PKB.FDB
Database:  /3255:C:\TEMP\1test\PKB.FDB

SQL> show database;
. . .
Default Character set: UTF8

SQL> show table;
       UVD_ACTIONS
SQL> show table uvd_actions;
ID                              INTEGER Not Null
NOTES                           VARCHAR(900) Nullable
CONSTRAINT PK_UVD_ACTIONS:
  Primary key (ID)

SQL> set list on;
SQL> select char_length(notes), octet_length(notes) from uvd_actions;

CHAR_LENGTH                     1182
OCTET_LENGTH                    1200

CHAR_LENGTH                     1182
OCTET_LENGTH                    1200

CHAR_LENGTH                     1182
OCTET_LENGTH                    1200

CHAR_LENGTH                     1182
OCTET_LENGTH                    1200


SQL> select char_length(trim(notes)), octet_length(trim(notes)) from uvd_actions;

CHAR_LENGTH                     32
OCTET_LENGTH                    50

CHAR_LENGTH                     32
OCTET_LENGTH                    50

CHAR_LENGTH                     32
OCTET_LENGTH                    50

CHAR_LENGTH                     32
OCTET_LENGTH                    50