DynamoDB FilterExpression not returning correct results with multiple AND operators









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I have a Lambda function in Nodejs which has DynamoDB query parameters as following with params.FilterExpression previously set and appended with an AND operator: 



params.FilterExpression = `attribute_exists(#i) AND #i = :i AND $params.FilterExpression`;
params.ExpressionAttributeNames['#i'] = 'ipName';
params.ExpressionAttributeValues[':i'] = 'Test 123';


The query is executed successfully, I get the items but with wrong ipName, they should have ipName = 'Test 123', however I see ipName = 'Test 1200' inside the items.






amazon-web-services nosql amazon-dynamodb







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  • I'm not a big fan of your self-referential interpolation on params.FilterExpression, but hopefully it's not a problem. What did params.FilterExpression contain prior to the interpolation?
    – jarmod
    yesterday














up vote
0
down vote

favorite












I have a Lambda function in Nodejs which has DynamoDB query parameters as following with params.FilterExpression previously set and appended with an AND operator: 



params.FilterExpression = `attribute_exists(#i) AND #i = :i AND $params.FilterExpression`;
params.ExpressionAttributeNames['#i'] = 'ipName';
params.ExpressionAttributeValues[':i'] = 'Test 123';


The query is executed successfully, I get the items but with wrong ipName, they should have ipName = 'Test 123', however I see ipName = 'Test 1200' inside the items.






amazon-web-services nosql amazon-dynamodb







share|improve this question





















  • I'm not a big fan of your self-referential interpolation on params.FilterExpression, but hopefully it's not a problem. What did params.FilterExpression contain prior to the interpolation?
    – jarmod
    yesterday












up vote
0
down vote

favorite









up vote
0
down vote

favorite











I have a Lambda function in Nodejs which has DynamoDB query parameters as following with params.FilterExpression previously set and appended with an AND operator: 



params.FilterExpression = `attribute_exists(#i) AND #i = :i AND $params.FilterExpression`;
params.ExpressionAttributeNames['#i'] = 'ipName';
params.ExpressionAttributeValues[':i'] = 'Test 123';


The query is executed successfully, I get the items but with wrong ipName, they should have ipName = 'Test 123', however I see ipName = 'Test 1200' inside the items.






amazon-web-services nosql amazon-dynamodb







share|improve this question













I have a Lambda function in Nodejs which has DynamoDB query parameters as following with params.FilterExpression previously set and appended with an AND operator: 



params.FilterExpression = `attribute_exists(#i) AND #i = :i AND $params.FilterExpression`;
params.ExpressionAttributeNames['#i'] = 'ipName';
params.ExpressionAttributeValues[':i'] = 'Test 123';


The query is executed successfully, I get the items but with wrong ipName, they should have ipName = 'Test 123', however I see ipName = 'Test 1200' inside the items.






amazon-web-services nosql amazon-dynamodb




amazon-web-services nosql amazon-dynamodb






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asked yesterday









Faizan Ali

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  • I'm not a big fan of your self-referential interpolation on params.FilterExpression, but hopefully it's not a problem. What did params.FilterExpression contain prior to the interpolation?
    – jarmod
    yesterday
















  • I'm not a big fan of your self-referential interpolation on params.FilterExpression, but hopefully it's not a problem. What did params.FilterExpression contain prior to the interpolation?
    – jarmod
    yesterday















I'm not a big fan of your self-referential interpolation on params.FilterExpression, but hopefully it's not a problem. What did params.FilterExpression contain prior to the interpolation?
– jarmod
yesterday




I'm not a big fan of your self-referential interpolation on params.FilterExpression, but hopefully it's not a problem. What did params.FilterExpression contain prior to the interpolation?
– jarmod
yesterday

















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