I use hana trial for a PoC to create a db admin tool.
Following command tries to get all readable views and tables:
SELECT * FROM (SELECT t.schema_name table_schem
,t.table_name
,'TABLE' table_type
,t.comments remarks
,null text
FROM tables t
WHERE t.schema_name NOT IN ('SYS', '_SYS_STATISTICS', '_SYS_REPO', '_SYS_BI', 'HCP')
UNION ALL
SELECT v.schema_name table_schem
,v.view_name table_name
,'VIEW' table_type
,v.comments remarks
,v.definition text
FROM views v
WHERE v.schema_name NOT IN ('SYS', '_SYS_STATISTICS', '_SYS_REPO', '_SYS_BI', 'HCP'))
The execution needs 80 seconds and longer....
It's horrible and we can't develop tools for HANA with such bad performance.
Are there any hints to reduce execution time to some millis?