[Issue 340] Added "ALTER TABLE CHANGE" feature to rename column family names.

[Sanjit Jhala]

[Issue 340] Added "ALTER TABLE CHANGE" feature to rename column family names.

-Modified hypertable shell regression test.
-Updated documentation with LDI option "IGNORE_UNKNOWN_CFS" and "ALTER TABLE
CHANGE".
http://github.com/sjhalaz/hypertable/commit/27d8c377b0667780df15beffdab5ee7e0cda1e01

-Sanjit

[Luke]

CHANGE sounds a little to vague, RENAME would be better.

[Sanjit Jhala]

I agree, I went with CHANGE because thats what MySql uses for column renaming.
http://php.about.com/od/mysqlcommands/g/mysql_change.htm

-Sanjit

[Luke]

Well, PostgreSQL use RENAME
http://www.postgresql.org/docs/8.1/static/ddl-alter.html, and it's
known for consistent syntax, unlike MySQL :)

[Sanjit Jhala]

Sounds good. I'll *change* it to rename

[Sanjit Jhala]

While I'm at it, maybe I should be something like:
"ALTER TABLE foo RENAME COLUMN FAMILY (old, new)"

to distinguish from potential future changes like RENAME ACCESS GROUP, RENAME TABLE etc.

-Sanjit

[Luke]

Sounds good.

[Sanjit Jhala]

Updated commit
http://github.com/sjhalaz/hypertable/commit/3249cafbf86cb367725c2015fc10b07ba5c9e062

[Luke]

Looks like forgot to update the docs (alter-table.md and HqlHelpText.cc etc.) :)

[Sanjit Jhala]

http://github.com/sjhalaz/hypertable/commit/20dffe401229087c07fa9d561faf921bde37a6ba