Is it possible to provide custom logic for Secondary Index key creation?
For my secondary index, I would like to have a key column which is a semicolon separated data of 2 columns in the base table.
Is it possible to create a custom logic to generate such value for the key column in secondary index?
amazon-dynamodb
asked Nov 12 at 7:39
ocind
304
add a comment |
For my secondary index, I would like to have a key column which is a semicolon separated data of 2 columns in the base table.
Is it possible to create a custom logic to generate such value for the key column in secondary index?
amazon-dynamodb
asked Nov 12 at 7:39
ocind
304
add a comment |
For my secondary index, I would like to have a key column which is a semicolon separated data of 2 columns in the base table.
Is it possible to create a custom logic to generate such value for the key column in secondary index?
amazon-dynamodb
asked Nov 12 at 7:39
ocind
304
For my secondary index, I would like to have a key column which is a semicolon separated data of 2 columns in the base table.
Is it possible to create a custom logic to generate such value for the key column in secondary index?
amazon-dynamodb
amazon-dynamodb
asked Nov 12 at 7:39
ocind
304
asked Nov 12 at 7:39
ocind
304
asked Nov 12 at 7:39
ocind
304
asked Nov 12 at 7:39
ocind
304
asked Nov 12 at 7:39
ocind
304
304
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
Unfortunately you can only use another key, verbatim- no transformations or custom logic.
If this is essential for you, however, you can enable DynamoDB streams on your table, and use them to trigger a lambda. The lambda could either:
- Adds/update a column with your custom logic value in your table that you'd use for your GSI (just be careful to check the UPDATE document so you don't get stuck in an infinite loop!)
- Populate/update a second table with the custom logic key and any attributes you want.
I would probably lean towards the former, because then removal and synchronization of data is still DynamoDB's responsibility.
n.b. if you only need your key to be the two combined values, you could just use one as a partition and the other as a sort for your GSI.
answered Nov 12 at 9:01
thomasmichaelwallace
2,5151817
add a comment |
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1 Answer
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1 Answer
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oldest
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Unfortunately you can only use another key, verbatim- no transformations or custom logic.
If this is essential for you, however, you can enable DynamoDB streams on your table, and use them to trigger a lambda. The lambda could either:
- Adds/update a column with your custom logic value in your table that you'd use for your GSI (just be careful to check the UPDATE document so you don't get stuck in an infinite loop!)
- Populate/update a second table with the custom logic key and any attributes you want.
I would probably lean towards the former, because then removal and synchronization of data is still DynamoDB's responsibility.
n.b. if you only need your key to be the two combined values, you could just use one as a partition and the other as a sort for your GSI.
answered Nov 12 at 9:01
thomasmichaelwallace
2,5151817
add a comment |
Unfortunately you can only use another key, verbatim- no transformations or custom logic.
If this is essential for you, however, you can enable DynamoDB streams on your table, and use them to trigger a lambda. The lambda could either:
- Adds/update a column with your custom logic value in your table that you'd use for your GSI (just be careful to check the UPDATE document so you don't get stuck in an infinite loop!)
- Populate/update a second table with the custom logic key and any attributes you want.
I would probably lean towards the former, because then removal and synchronization of data is still DynamoDB's responsibility.
n.b. if you only need your key to be the two combined values, you could just use one as a partition and the other as a sort for your GSI.
answered Nov 12 at 9:01
thomasmichaelwallace
2,5151817
add a comment |
Unfortunately you can only use another key, verbatim- no transformations or custom logic.
If this is essential for you, however, you can enable DynamoDB streams on your table, and use them to trigger a lambda. The lambda could either:
- Adds/update a column with your custom logic value in your table that you'd use for your GSI (just be careful to check the UPDATE document so you don't get stuck in an infinite loop!)
- Populate/update a second table with the custom logic key and any attributes you want.
I would probably lean towards the former, because then removal and synchronization of data is still DynamoDB's responsibility.
n.b. if you only need your key to be the two combined values, you could just use one as a partition and the other as a sort for your GSI.
answered Nov 12 at 9:01
thomasmichaelwallace
2,5151817
Unfortunately you can only use another key, verbatim- no transformations or custom logic.
If this is essential for you, however, you can enable DynamoDB streams on your table, and use them to trigger a lambda. The lambda could either:
- Adds/update a column with your custom logic value in your table that you'd use for your GSI (just be careful to check the UPDATE document so you don't get stuck in an infinite loop!)
- Populate/update a second table with the custom logic key and any attributes you want.
I would probably lean towards the former, because then removal and synchronization of data is still DynamoDB's responsibility.
n.b. if you only need your key to be the two combined values, you could just use one as a partition and the other as a sort for your GSI.
answered Nov 12 at 9:01
thomasmichaelwallace
2,5151817
answered Nov 12 at 9:01
thomasmichaelwallace
2,5151817
answered Nov 12 at 9:01
thomasmichaelwallace
2,5151817
answered Nov 12 at 9:01
thomasmichaelwallace
2,5151817
2,5151817
add a comment |
add a comment |
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