Notes

The fields Level_2 and Level_1 in the provided SQL script are determined using hard-coded logic based on the value of the clientgroupname field. The hard-coded logic is outlined as follows:

Level_2: This field is determined based on the clientgroupname field using the following conditions:

If the clientgroupname is 'NVA', Level_2 is assigned the value of districtname.
If the clientgroupname is 'Absolut' or 'VEG', Level_2 is assigned a NULL value.
Level_1: This field is also determined based on the clientgroupname field but with slightly different conditions:

If the clientgroupname is 'NVA', Level_1 is assigned the value of divisionname.
If the clientgroupname is 'Absolut', Level_1 is assigned the value of districtname.
If the clientgroupname is 'VEG', Level_1 is also assigned a NULL value.
This logic is described as "hard-coded" because it is explicitly written into the SQL script and does not dynamically adapt based on changes in the data or schema. For instance, if a new clientgroupname is introduced, the script must be manually modified to account for the new data.

In a more dynamic or scalable implementation, such logic would ideally be stored in a separate table or a configuration file. This way, when new client groups are added or existing hierarchies change, the configuration can be updated without changing the SQL code itself. This might involve creating a table mapping clientgroupname to their respective hierarchy levels and updating the SQL script to determine Level_2 and Level_1 based on this configuration, rather than hard-coded conditions.


Yes, the provided PL/SQL block appears to be a program designed to update hierarchy levels (L1 through L4) for a client group named 'Heartland' in a dataset named pda_data_for_tableau_showcase_v2. This logic is somewhat related to the SQL query you provided earlier, as both deal with hierarchy levels (albeit with different naming, i.e., Level_1, Level_2 vs L1, L2, etc.) and client group associations.

Here's what the PL/SQL block does, step-by-step:

Declares a cursor named curated_heartland_cur that selects all distinct child MIDs from the pda_data_for_tableau_showcase_v2 table for the 'Heartland' client group where the level_1 value is not defined.

Opens a loop that goes through each MID from the cursor.

For each iteration, it checks if the current MID exists in the ccoc_account_data_base table and fetches its associated accountid.

Checks if the fetched accountid has a corresponding MID in the external_hierarchy_data_base table.

If a corresponding MID is found, it fetches the hierarchy levels (l1_vp, l2_rdo, l3_rmo, l4_pmo) for that MID.

Finally, it updates the corresponding hierarchy levels (level_1 through level_4) for the current record in the pda_data_for_tableau_showcase_v2 table using the fetched hierarchy levels.

This script is designed to deal with situations where some MIDs in the pda_data_for_tableau_showcase_v2 table might not have defined hierarchy levels. It attempts to find the missing hierarchy data by finding 'similar' MIDs that are associated with the same account in the ccoc_account_data_base table, then using the hierarchy data from those 'similar' MIDs to fill in the missing data.