Kexi/Migration

Add support for inserting CSV data into an existing table

• Status: TODO
• Wish #305505

Rationale

Inserting (or rather appending) CSV data into an existing table gives a simple means for merging CSV data chunks in one step.

Assumptions & Requirements

• The data should be appended to the existing table, without changes made to the
• Data is in largely the same format (regarding column or data types) as the data used to create the original table, to achieve this:
  • Data types for columns should be taken from the schema of the destination table
  • Column names stay untouched in the destination table, however autodetection should be still used to figure out value of the "First row contains column names" option; the option can be changed in the

• Conflicts resolutions:
  • Data type violations (for example when importing string when numeric value is expected): TODO - for 2.6 we need to have friendly error message at least
    • Future: propose skipping conflicting values
  • Primary key violations: TODO - for 2.6 we need to have friendly error message at least
    • Future: propose skipping records with conflicting values or replacing the old records with new ones
  • Future: unique key violations: TODO

Porting to non-modal assistants

• Status: TODO

What is involved in porting to the new gui? <jstaniek>: We sit and design the given assistant and I am helping with using the API and possibly extending/fixing it. The difference is that many imports can be started concurrently so some extra checking may be needed but this is a side note. Also e.g. user could try to edit/remove a source table during export. So this is fun. But after the change the GUI would be a lot more natural I think.