SQL> column slcode format a10
SQL> select * from supplier;
CODE SLNAME
-------- ------------
111 kkkkkkkkk
1 rrr
3 gggggggggggggggggg
SQL>
SQL> delete from supplier where length(code) <'3'
2 /
2 rows deleted.
SQL> select * from supplier;
CODE SLNAME
-------- ------------
111 kkkkkkkkk
SQL>
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