Comparison of Space used between SQL Server and Vertica

Table Size in SQL Server

SELECT
    t.NAME AS TableName,
    s.Name AS SchemaName,
    p.rows AS RowCounts,
    SUM(a.total_pages) * 8 AS TotalSpaceKB,
    SUM(a.used_pages) * 8 AS UsedSpaceKB,
    (SUM(a.total_pages) - SUM(a.used_pages)) * 8 AS UnusedSpaceKB
FROM
    sys.tables t
INNER JOIN    
    sys.indexes i ON t.OBJECT_ID = i.object_id
INNER JOIN
    sys.partitions p ON i.object_id = p.OBJECT_ID AND i.index_id = p.index_id
INNER JOIN
    sys.allocation_units a ON p.partition_id = a.container_id
LEFT OUTER JOIN
    sys.schemas s ON t.schema_id = s.schema_id
WHERE
    t.NAME ='RETENTION_METRICS_Vertica'
    AND t.is_ms_shipped = 0
    AND i.OBJECT_ID > 255
GROUP BY
    t.Name, s.Name, p.Rows
ORDER BY
    t.Name

 

Table Size in Vertica

SELECT t.table_name AS table_name, 

SUM(ps.wos_row_count + ps.ros_row_count) AS row_count,

SUM(ps.wos_used_bytes + ps.ros_used_bytes) AS byte_count,sum(ps.USED_BYTES) as sum_used_bytes

FROM tables t

JOIN projections p ON t.table_id = p.anchor_table_id

JOIN projection_storage ps on p.projection_name = ps.projection_name

WHERE t.table_name ='subscription'

GROUP BY t.table_name

ORDER BY byte_count DESC;