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| Parameter Name | Data Type | Description | Default Value | Example | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Label | String |
| ELT Minus | Exclude Common Records | ||||||||
| Get preview data | Check box |
| Not selected | Selected |
Troubleshooting
None.
Examples
Retrieving Uncommon Rows From a Table
We need a query with the MINUS operator if we want to compare two tables and retrieve the uncommon records from the first table. This example shows how we can use the ELT Minus Snap to build this query.
First, we build SELECT queries to read the target tables. To do so, we can use two ELT Select Snaps, in this example: Read Part A and Read Part B. Each of these Snaps is configured to output a SELECT * query to read the target table in the database. Additionally, these Snaps are also configured to show a preview of the SELECT query's execution as shown:
| Read Part A Configuration | Read Part B Configuration |
|---|---|
 |  |
A preview of the outputs from the ELT Select Snaps is shown below:
| Read Part A Output | Read Part B Output |
|---|---|
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Then, we connect the ELT Minus Snap to the output view of the ELT Select Snaps. The SELECT * queries in both of these Snaps form the inputs for the ELT Minus Snap. Upon execution, the ELT Minus Snap combines both incoming SELECT * queries and adds the MINUS operator.
A preview of the ELT Minus Snap's output is shown below:
We can also add an ELT Insert-Select Snap downstream and write the result of this query into another table.
Downloads
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