SQL Server
SQL Server
DynamoDB - UpdateItem
See more Amazon DynamoDB Examples
Edits an existing item's attributes, or adds a new item to the table if it does not already exist. You can put, delete, or add attribute values. You can also perform a conditional update on an existing item (insert a new attribute name-value pair if it doesn't exist, or replace an existing name-value pair if it has certain expected attribute values).Chilkat SQL Server Downloads
-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
DECLARE @hr int
DECLARE @iTmp0 int
-- Important: Do not use nvarchar(max). See the warning about using nvarchar(max).
DECLARE @sTmp0 nvarchar(4000)
DECLARE @success int
SELECT @success = 0
DECLARE @rest int
EXEC @hr = sp_OACreate 'Chilkat.Rest', @rest OUT
IF @hr <> 0
BEGIN
PRINT 'Failed to create ActiveX component'
RETURN
END
-- Implements the following CURL command:
-- curl -X POST https://dynamodb.us-west-2.amazonaws.com/ \
-- -H "Accept-Encoding: identity" \
-- -H "Content-Type: application/x-amz-json-1.0" \
-- -H "Authorization: AWS4-HMAC-SHA256 Credential=<Credential>, SignedHeaders=<Headers>, Signature=<Signature>" \
-- -H "X-Amz-Date: <Date>" \
-- -H "X-Amz-Target: DynamoDB_20120810.UpdateItem" \
-- -d '{
-- "TableName": "Thread",
-- "Key": {
-- "ForumName": {
-- "S": "Amazon DynamoDB"
-- },
-- "Subject": {
-- "S": "Maximum number of items?"
-- }
-- },
-- "UpdateExpression": "set LastPostedBy = :val1",
-- "ConditionExpression": "LastPostedBy = :val2",
-- "ExpressionAttributeValues": {
-- ":val1": {"S": "alice@example.com"},
-- ":val2": {"S": "fred@example.com"}
-- },
-- "ReturnValues": "ALL_NEW"
-- }'
-- Use the following online tool to generate REST code from a CURL command
-- Convert a cURL Command to REST Source Code
DECLARE @authAws int
EXEC @hr = sp_OACreate 'Chilkat.AuthAws', @authAws OUT
EXEC sp_OASetProperty @authAws, 'AccessKey', 'AWS_ACCESS_KEY'
EXEC sp_OASetProperty @authAws, 'SecretKey', 'AWS_SECRET_KEY'
-- Don't forget to change the region to your particular region. (Also make the same change in the call to Connect below.)
EXEC sp_OASetProperty @authAws, 'Region', 'us-west-2'
EXEC sp_OASetProperty @authAws, 'ServiceName', 'dynamodb'
-- SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
EXEC sp_OAMethod @rest, 'SetAuthAws', @success OUT, @authAws
-- URL: https://dynamodb.us-west-2.amazonaws.com/
DECLARE @bTls int
SELECT @bTls = 1
DECLARE @port int
SELECT @port = 443
DECLARE @bAutoReconnect int
SELECT @bAutoReconnect = 1
EXEC sp_OAMethod @rest, 'Connect', @success OUT, 'dynamodb.us-west-2.amazonaws.com', @port, @bTls, @bAutoReconnect
IF @success <> 1
BEGIN
EXEC sp_OAGetProperty @rest, 'ConnectFailReason', @iTmp0 OUT
PRINT 'ConnectFailReason: ' + @iTmp0
EXEC sp_OAGetProperty @rest, 'LastErrorText', @sTmp0 OUT
PRINT @sTmp0
EXEC @hr = sp_OADestroy @rest
EXEC @hr = sp_OADestroy @authAws
RETURN
END
-- Note: The above code does not need to be repeatedly called for each REST request.
-- The rest object can be setup once, and then many requests can be sent. Chilkat will automatically
-- reconnect within a FullRequest* method as needed. It is only the very first connection that is explicitly
-- made via the Connect method.
-- Use this online tool to generate code from sample JSON:
-- Generate Code to Create JSON
-- The following JSON is sent in the request body.
-- {
-- "TableName": "Thread",
-- "Key": {
-- "ForumName": {
-- "S": "Amazon DynamoDB"
-- },
-- "Subject": {
-- "S": "Maximum number of items?"
-- }
-- },
-- "UpdateExpression": "set LastPostedBy = :val1",
-- "ConditionExpression": "LastPostedBy = :val2",
-- "ExpressionAttributeValues": {
-- ":val1": {
-- "S": "alice@example.com"
-- },
-- ":val2": {
-- "S": "fred@example.com"
-- }
-- },
-- "ReturnValues": "ALL_NEW"
-- }
DECLARE @json int
EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @json OUT
EXEC sp_OAMethod @json, 'UpdateString', @success OUT, 'TableName', 'Thread'
EXEC sp_OAMethod @json, 'UpdateString', @success OUT, 'Key.ForumName.S', 'Amazon DynamoDB'
EXEC sp_OAMethod @json, 'UpdateString', @success OUT, 'Key.Subject.S', 'Maximum number of items?'
EXEC sp_OAMethod @json, 'UpdateString', @success OUT, 'UpdateExpression', 'set LastPostedBy = :val1'
EXEC sp_OAMethod @json, 'UpdateString', @success OUT, 'ConditionExpression', 'LastPostedBy = :val2'
EXEC sp_OAMethod @json, 'UpdateString', @success OUT, 'ExpressionAttributeValues.:val1.S', 'alice@example.com'
EXEC sp_OAMethod @json, 'UpdateString', @success OUT, 'ExpressionAttributeValues.:val2.S', 'fred@example.com'
EXEC sp_OAMethod @json, 'UpdateString', @success OUT, 'ReturnValues', 'ALL_NEW'
EXEC sp_OAMethod @rest, 'AddHeader', @success OUT, 'Content-Type', 'application/x-amz-json-1.0'
EXEC sp_OAMethod @rest, 'AddHeader', @success OUT, 'X-Amz-Target', 'DynamoDB_20120810.UpdateItem'
EXEC sp_OAMethod @rest, 'AddHeader', @success OUT, 'Accept-Encoding', 'identity'
DECLARE @sbRequestBody int
EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbRequestBody OUT
EXEC sp_OAMethod @json, 'EmitSb', @success OUT, @sbRequestBody
DECLARE @sbResponseBody int
EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbResponseBody OUT
EXEC sp_OAMethod @rest, 'FullRequestSb', @success OUT, 'POST', '/', @sbRequestBody, @sbResponseBody
IF @success <> 1
BEGIN
EXEC sp_OAGetProperty @rest, 'LastErrorText', @sTmp0 OUT
PRINT @sTmp0
EXEC @hr = sp_OADestroy @rest
EXEC @hr = sp_OADestroy @authAws
EXEC @hr = sp_OADestroy @json
EXEC @hr = sp_OADestroy @sbRequestBody
EXEC @hr = sp_OADestroy @sbResponseBody
RETURN
END
DECLARE @respStatusCode int
EXEC sp_OAGetProperty @rest, 'ResponseStatusCode', @respStatusCode OUT
PRINT 'response status code = ' + @respStatusCode
IF @respStatusCode >= 400
BEGIN
PRINT 'Response Status Code = ' + @respStatusCode
PRINT 'Response Header:'
EXEC sp_OAGetProperty @rest, 'ResponseHeader', @sTmp0 OUT
PRINT @sTmp0
PRINT 'Response Body:'
EXEC sp_OAMethod @sbResponseBody, 'GetAsString', @sTmp0 OUT
PRINT @sTmp0
EXEC @hr = sp_OADestroy @rest
EXEC @hr = sp_OADestroy @authAws
EXEC @hr = sp_OADestroy @json
EXEC @hr = sp_OADestroy @sbRequestBody
EXEC @hr = sp_OADestroy @sbResponseBody
RETURN
END
DECLARE @jsonResponse int
EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @jsonResponse OUT
EXEC sp_OAMethod @jsonResponse, 'LoadSb', @success OUT, @sbResponseBody
EXEC sp_OASetProperty @jsonResponse, 'EmitCompact', 0
EXEC sp_OAMethod @jsonResponse, 'Emit', @sTmp0 OUT
PRINT @sTmp0
-- Sample JSON response:
-- (Sample code for parsing the JSON response is shown below)
-- {
-- "Attributes": {
-- "LastPostedBy": {
-- "S": "alice@example.com"
-- },
-- "ForumName": {
-- "S": "Amazon DynamoDB"
-- },
-- "LastPostDateTime": {
-- "S": "20130320010350"
-- },
-- "Tags": {
-- "SS": [
-- "Update",
-- "Multiple Items",
-- "HelpMe"
-- ]
-- },
-- "Subject": {
-- "S": "Maximum number of items?"
-- },
-- "Views": {
-- "N": "5"
-- },
-- "Message": {
-- "S": "I want to put 10 million data items to an Amazon DynamoDB table. Is there an upper limit?"
-- }
-- }
-- }
-- Sample code for parsing the JSON response...
-- Use the following online tool to generate parsing code from sample JSON:
-- Generate Parsing Code from JSON
DECLARE @strVal nvarchar(4000)
DECLARE @AttributesLastPostedByS nvarchar(4000)
EXEC sp_OAMethod @jsonResponse, 'StringOf', @AttributesLastPostedByS OUT, 'Attributes.LastPostedBy.S'
DECLARE @AttributesForumNameS nvarchar(4000)
EXEC sp_OAMethod @jsonResponse, 'StringOf', @AttributesForumNameS OUT, 'Attributes.ForumName.S'
DECLARE @AttributesLastPostDateTimeS nvarchar(4000)
EXEC sp_OAMethod @jsonResponse, 'StringOf', @AttributesLastPostDateTimeS OUT, 'Attributes.LastPostDateTime.S'
DECLARE @AttributesSubjectS nvarchar(4000)
EXEC sp_OAMethod @jsonResponse, 'StringOf', @AttributesSubjectS OUT, 'Attributes.Subject.S'
DECLARE @AttributesViewsN nvarchar(4000)
EXEC sp_OAMethod @jsonResponse, 'StringOf', @AttributesViewsN OUT, 'Attributes.Views.N'
DECLARE @AttributesMessageS nvarchar(4000)
EXEC sp_OAMethod @jsonResponse, 'StringOf', @AttributesMessageS OUT, 'Attributes.Message.S'
DECLARE @i int
SELECT @i = 0
DECLARE @count_i int
EXEC sp_OAMethod @jsonResponse, 'SizeOfArray', @count_i OUT, 'Attributes.Tags.SS'
WHILE @i < @count_i
BEGIN
EXEC sp_OASetProperty @jsonResponse, 'I', @i
EXEC sp_OAMethod @jsonResponse, 'StringOf', @strVal OUT, 'Attributes.Tags.SS[i]'
SELECT @i = @i + 1
END
EXEC @hr = sp_OADestroy @rest
EXEC @hr = sp_OADestroy @authAws
EXEC @hr = sp_OADestroy @json
EXEC @hr = sp_OADestroy @sbRequestBody
EXEC @hr = sp_OADestroy @sbResponseBody
EXEC @hr = sp_OADestroy @jsonResponse
END
GO