AWS SDK for Go (PILOT)
API Reference

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Remove

import "github.com/aws/aws-sdk-go/service/dynamodb/expression"

func Remove(name NameBuilder) UpdateBuilder

Remove returns an UpdateBuilder representing the Remove operation for DynamoDB Update Expressions. The argument name should specify the item attribute to delete. The resulting UpdateBuilder can be used as an argument to the WithUpdate() method for the Builder struct.

Example:

// update represents the remove operation to remove the item attribute // "itemToRemove" update := expression.Remove(expression.Name("itemToRemove")) // Adding more update methods anotherUpdate := update.Remove(expression.Name("someName")) // Creating a Builder builder := Update(update)

Expression Equivalent:

expression.Remove(expression.Name("itemToRemove")) "REMOVE itemToRemove"

name

NameBuilder represents a name of a top level item attribute or a nested attribute. Since NameBuilder represents a DynamoDB Operand, it implements the OperandBuilder interface. Methods and functions in the package take NameBuilder as an argument and establishes relationships between operands. NameBuilder should only be initialized using the function Name().

Example:

// Create a NameBuilder representing the item attribute "aName" nameBuilder := expression.Name("aName")

UpdateBuilder

UpdateBuilder represents Update Expressions in DynamoDB. UpdateBuilders are the building blocks of the Builder struct. Note that there are different update operations in DynamoDB and an UpdateBuilder can represent multiple update operations. More Information at: https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.UpdateExpressions.html

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