Remove some dead code Remove dead code concerned with constraint and schema labels. This is an anachronism from pre-open-source versions of the code. Most of the code removed is in the compiler, with a small amount of cli and executor code removed.
perf enhancement for ddl operations. DDL operations where objects (tables, views) had large number of columns were running slow due to single row inserts into metadata COLUMNS table. This showed up during DSM repository creation which had 150 tables and 500 views. Changes done: -- added code to do rowwise rowsets -- enhanced metadata COLUMNS inserts to use rwrs upserts -- changed metadata calls to use upsert instead of insert -- fixed a cleanup bug