I think I explained very detailed what I need in one of my posts.

Please check and let me know if anything missing in my second explanation:

First, db1 has:

SELECT ObjectID, Media, artist, place, gender from db1.view1

Example:

1, paint, Arthur, Europe, male;

2, paint, John, US, male;

3, wood, Ann, Europe, female;

Second, db2 has:

SELECT CustomData.Field_ID, CustomData.Record_ID, FieldDef.Name, CustomData.StringValue

FROM CustomData LEFT JOIN

FieldDef ON FieldDef.Field_ID = CustomData.Field_ID

Example for CustomData table (Field_ID, Record_ID, StringValue):

10, 18031, 1

10141, 18031, Arthur

Example for FieldDef table (Field_ID, Name):

10, ObjectID

10140, Media

10141, artist

10142, place

10222, gender

What I need to check: If Object_ID = 1 (or any other Object_ID which is in db1.view) exists in CustomData.

If yes, then INSERT/UPDATE CustomData table to have:

10, 18031, 1

10140, 18031, paint

10141, 18031, Arthur

10142, 18031, Europe

10222, 18031, male