how can I rename a table / move to a different schema in sql DB2?

Question

I am trying to rename a table in db2 like so

rename table schema1.mytable to schema2.mytable

but getting the following error message:

the name "mytable" has the wrong number of qualifiers.. SQLCODE=-108,SQLSTATE=42601

what is the problem here.... I am using the exact syntax from IBM publib documentation.

Answer 1

You cannot change the schema of a given object. You have to recreate it.

There are severals ways to do that:

• If you have only one table, you can export and import/load the table. If you use the IDX format, the DDL will be included in the generated file. If using another format, the table has be created.

• You can recreate the table by using:

  Create table schema2.mytable like schema1.mytable

• You can extract the DDL with the db2look tool

• If you are changing the schema name for a schema given, you can use ADMIN_COPY_SCHEMA

These last two options only create the table structure, and you still need to import the data. After having create the table, you insert the data by different ways:

• Inserting directly

  insert into schema2.mytable select * from schema1.mytable

• Via load from cursor

• Via a Load or import from file (The file exported in the previous step)

The problem is the foreign relations, because they have to be recreated.

Finally, you can create an alias. It is easier, and you do not have to deal with relations.

Answer 2

You can easily rename a table with this statement:

RENAME TABLE SCHEMA.TABLENAME TO NEWTABLENAME;

Answer 3

You're not renaming table in provided example, you're trying to move to different schema, it's not the same thing. Look into db2move tool for this.

Answer 4

What if you leave it as is and create an alias with the new name and schema.

Answer 5

Renaming a table means to rename a table within same schema .To rename in other schema ,db2 call its ALIAS:

db2 create alias for