Hope you are doing good.

I have gone through the post related to “Greenplum: gp_stats_missing to get the list of pending ANALYZE of Tables” and you mentioned that
”
A column “smisize” is an important column to check the status of table statistics.
If it contains value ‘f’, a table does not have row count and row sizing statistics recorded in the system catalog, which indicates that the table needs to be analyzed

”
In the below pivotal link, they mentioned that
“smisize = “t” meaning relpages or reltuples are not zero , “f” means either relpages or reltuples are zero
smicols = Number of columns in the table
smirecs = number of column in the table that has statistics information in the pg_statistic table
”
From what I understand, if a table has entry in the view then
1. Table has no statistics and should perform analyze operation
2. Table has “0” records and that will be showed in “smisize” column. Even after analyze operation, table will not be removed from the view as it has zero records

Some useful points:
1. gp_stats_missing tells you which table needs statistics/analyze if table with data have not been analyzed anytime in its lifecycle / or when the table has altered to add / drop column.
2. gp_stats_missing doesn’t remove the entry from its view when the table has no rows / or when tuples / pages has been reduced to zero after deleting of data
3. gp_stats_missing doesn’t tell you if the table needs statistics after updates / delete / bulk loading of data , since it only checks for relpages / reltuples = 0