fleetside72 / tps_etl Goto Github PK
View Code? Open in Web Editor NEWsmall etl application retaining source data and layering extractions
small etl application retaining source data and layering extractions
the current import function should be rename to file_import since it only uses COPY
to push files into the database
another approach might be to have the client application push records directly to tps.trans and forego even calling a database level function
if a schema extracts a json key and it's value is like this {"date_field":""} it will not cast to a date.
only update the source if the definition is actually different
function to run regex on dataset to test for creating map_rm record
apply mappings at insert time
unless the schema is unchanged, build views to reflect at srce_set
maintain a list of all object keys
each function should only require a json object so as to simplify the SQL involved
if the source name changes, what happens to all the associated data
if the constraint is changing, consider rebuilding for existing rows
if maps definitions are passed to the set function as an array of objects they are not validated.
create map set function to allow for:
if i call the map overwrite function after writing to the map table, I cannot rollback since transactions dont apply inside a function
-> put a an update trigger than can fail the original insert
-> if the return value of map overwrite is fail, leave it and notify the application
-> dont build sql into functions but instead leave it in files and implement transactions that way
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