Getting error with inserts

Question

Hi
I’ve written a procedure in which I insert rows in respective columns in a table.
One column say “TEST” in that table have datatype as varchar2(1024 char)
I’ve done 5 unions to accomplish this task.
In two blocks, I have written like
Primary_key,
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substr(source,1,255) as TEST
from joins of diff tables
union
Primary_key,
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Substr(source,1,1023) as TEST
From joins of diff tables.
Rest block in this union have null value for this column.
When I am trying to execute this query, it’s giving me error : “ORA-12899: value too large for column "SCHEMA"."TABLE"."TEST" (actual: 1027, maximum: 1024)”
Could anyone please help me to solve as I am wondered in spite of correct coding it’s giving me error.
--PD                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

Answer 1

That's what I thought, you have a multi-byte character set (UTF8). This means, some characters use 2 or more bytes (ie the french character é needs two bytes for instance).
You can look, what line is giving this error by executing the select statement given above and then try to correct it (if possible).
But perhaps you have to drop the table and recreate it using "char" as length measurement instead of the existing "byte" measurement, ie
SQL> create table t1 (col1 varchar2(20));
Table created.
SQL> should really be in your case
SQL> create table t1 (col1 varchar2(20 char));
Table created.
SQL>