Feature: metadata_scan supports checking the metadata of index table now #21800
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XuPeng-SH
requested changes
May 8, 2025
gouhongshen
approved these changes
May 9, 2025
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What type of PR is this?
Which issue(s) this PR fixes:
issue #21785
What this PR does / why we need it:
MO without this PR
metadata_scan currently only supports scanning regular tables.
For example, let's say there is a database named cabbage ,a table named user, and an index named idx_username which corresponds to the table __mo_index_unique_0196a9ae-33d9-7308-9d57-8a593fc55dbf.
We can check the metadata of user as follows.
But we can't check the metadata of index tables even if we know the system-generated name of the index table.
MO with this PR
Now we can easily check the metadata of an index table by grammar metadata_scan("db_name.table_name.$index_name", "col_name")g;
