Oracle 12c-如何使用现有表（如第一个表）创建一个包含所有数据，分区和索引的新表？

Question

Table t1 is partitioned and has data.

I am using this command to transfer data from t1 to t2:

CREATE TABLE t2
TABLESPACE ts1
  AS 
select * from t1;

However this copies all the data but does not create partitions as in t1. Is there a command to copy all the data plus partitions and indexes from t1 to t2?

Answer 1

Use dbms_metadata to get the whole structure.

SELECT dbms_metadata.get_ddl( 'TABLE', 'SOURCE_TABLE_NAME' ) FROM DUAL;

Run the DDL generated from this query replacing the table name with new table name.

If your source_table is in a different schema, then

SELECT dbms_metadata.get_ddl( 'TABLE', 'SOURCE_TABLE_NAME', 'SOURCE_SCHEMA_NAME' ) FROM DUAL;

Answer 2

It's not possible in the same schema - it will fail with an object already exists error. If it is a different schema, then try this: export and import by renaming the table while importing to another schema.

Otherwise try with DBMS_METADATA.GET_DDL.