Online Documentation for SQL Manager for PostgreSQL

Setting import mode

This step of the wizard allows you to define the records processing mode as Insert All, Insert New, Update, Update or Insert, Delete, Delete or Insert mode.

Import mode

Insert all: all records from the source file are inserted into the tables irrespective of whether any records exist in the destination table or not
Insert new: already existing records are skipped, and new records are inserted into the destination table
Update: all existing records are updated from the source file
Update or insert: already existing records are updated and new records are inserted into the destination table
Delete: already existing records are deleted
Delete or insert: existing records are deleted and new records are inserted into the destination table

Import Data - Setting import mode

Here is an example of some import modes offered by Import Data Wizard:

All import modes (except for the Insert All mode) are based on key values information. In order to perform import operations with these modes used, you need to have matches between the source file key column(s) and the destination table key column(s).

For example, your source file contains three rows with the key values 1, 2, 3, and your destination table contains three rows with the key values 1, 2, 4.

Destination table	Source file data

If you use the Insert new import mode, in this case only the row with key value 3 will be inserted into the destination table.

If you use the Update import mode, then the rows with key values 1, 2 will be updated.

If you use the Update or insert import mode, then rows 1, 2 will be updated and the row with key value 3 will be inserted.

It is applied to all other import modes, except for the Insert all mode. For all these modes (except for the Insert all mode) it is obligatory to select the primary key columns. This column (or columns) is used as key column to identify specific data in the target database.

Insert new	Update	Update or insert	Delete	Delete or insert

The key columns for these operations are defined in the Key columns area.

Import type

Single commands / Universal mode / Batch insert type

The Single commands import mode is performed with the Single Commands method used and serves to generate and execute single SQL commands on the server, whereas the Batch insert mode uses native PostgreSQL commands to import a data set as a batch. With the help of the Single commands import mode your data can be imported considerably faster as compared to the Universal mode which is used for backward compatibility.

Use Import mode to select whether to insert all records, or to update/delete existing ones. Note that for updating/deleting existing records in the target table you should move its key columns from the Available columns list to the Selected columns list.

Key columns

The area allows you to select the columns of the table to be used as the key columns for the import process.

To select a column, you need to move it from the Available columns list to the Selected columns list. Use the buttons or drag-and-drop operations to move the columns from one list to another.