DDL Clause in Index Specification and Partial Index for Posgresql

What for is the DDL Clause in Index Specification?
Is it possible to create Partial Index in ERD diagram for Posgresql?https://www.postgresql.org/docs/8.0/indexes-partial.html

Hi Jerzy,

DDL Clause is a custom string that will be appended to the end of the create index statement. You can specify “where …” to create partial index.

Best regards,
Jick Yeung

This DDL clause appears in meany forms.
I guess, it always appended to VP generated SQL ?
Am I right?

Hi Jerzy,

Yes, the DDL clause entered will append to the DDL generated.

Best regards,
Jick Yeung