DescribeTable
Returns information about the table, including the current status of the table, when it was created, the primary key schema, and any indexes on the table.
If you issue a DescribeTable
request immediately after a
CreateTable
request, DynamoDB might return a
ResourceNotFoundException
. This is because
DescribeTable
uses an eventually consistent query, and the metadata
for your table might not be available at that moment. Wait for a few seconds, and
then try the DescribeTable
request again.
Request Syntax
{
"TableName": "string
"
}
Request Parameters
The request accepts the following data in JSON format.
In the following list, the required parameters are described first.
- TableName
-
The name of the table to describe.
Type: String
Length Constraints: Minimum length of 3. Maximum length of 255.
Pattern:
[a-zA-Z0-9_.-]+
Required: Yes
Response Syntax
{
"Table": {
"ArchivalSummary": {
"ArchivalBackupArn": "string",
"ArchivalDateTime": number,
"ArchivalReason": "string"
},
"AttributeDefinitions": [
{
"AttributeName": "string",
"AttributeType": "string"
}
],
"BillingModeSummary": {
"BillingMode": "string",
"LastUpdateToPayPerRequestDateTime": number
},
"CreationDateTime": number,
"GlobalSecondaryIndexes": [
{
"Backfilling": boolean,
"IndexArn": "string",
"IndexName": "string",
"IndexSizeBytes": number,
"IndexStatus": "string",
"ItemCount": number,
"KeySchema": [
{
"AttributeName": "string",
"KeyType": "string"
}
],
"Projection": {
"NonKeyAttributes": [ "string" ],
"ProjectionType": "string"
},
"ProvisionedThroughput": {
"LastDecreaseDateTime": number,
"LastIncreaseDateTime": number,
"NumberOfDecreasesToday": number,
"ReadCapacityUnits": number,
"WriteCapacityUnits": number
}
}
],
"GlobalTableVersion": "string",
"ItemCount": number,
"KeySchema": [
{
"AttributeName": "string",
"KeyType": "string"
}
],
"LatestStreamArn": "string",
"LatestStreamLabel": "string",
"LocalSecondaryIndexes": [
{
"IndexArn": "string",
"IndexName": "string",
"IndexSizeBytes": number,
"ItemCount": number,
"KeySchema": [
{
"AttributeName": "string",
"KeyType": "string"
}
],
"Projection": {
"NonKeyAttributes": [ "string" ],
"ProjectionType": "string"
}
}
],
"ProvisionedThroughput": {
"LastDecreaseDateTime": number,
"LastIncreaseDateTime": number,
"NumberOfDecreasesToday": number,
"ReadCapacityUnits": number,
"WriteCapacityUnits": number
},
"Replicas": [
{
"GlobalSecondaryIndexes": [
{
"IndexName": "string",
"ProvisionedThroughputOverride": {
"ReadCapacityUnits": number
}
}
],
"KMSMasterKeyId": "string",
"ProvisionedThroughputOverride": {
"ReadCapacityUnits": number
},
"RegionName": "string",
"ReplicaInaccessibleDateTime": number,
"ReplicaStatus": "string",
"ReplicaStatusDescription": "string",
"ReplicaStatusPercentProgress": "string",
"ReplicaTableClassSummary": {
"LastUpdateDateTime": number,
"TableClass": "string"
}
}
],
"RestoreSummary": {
"RestoreDateTime": number,
"RestoreInProgress": boolean,
"SourceBackupArn": "string",
"SourceTableArn": "string"
},
"SSEDescription": {
"InaccessibleEncryptionDateTime": number,
"KMSMasterKeyArn": "string",
"SSEType": "string",
"Status": "string"
},
"StreamSpecification": {
"StreamEnabled": boolean,
"StreamViewType": "string"
},
"TableArn": "string",
"TableClassSummary": {
"LastUpdateDateTime": number,
"TableClass": "string"
},
"TableId": "string",
"TableName": "string",
"TableSizeBytes": number,
"TableStatus": "string"
}
}
Response Elements
If the action is successful, the service sends back an HTTP 200 response.
The following data is returned in JSON format by the service.
- Table
-
The properties of the table.
Type: TableDescription object
Errors
For information about the errors that are common to all actions, see Common Errors.
- InternalServerError
-
An error occurred on the server side.
HTTP Status Code: 500
- ResourceNotFoundException
-
The operation tried to access a nonexistent table or index. The resource might not be specified correctly, or its status might not be
ACTIVE
.HTTP Status Code: 400
Examples
Describe a Table
This example describes the Thread
table.
Sample Request
POST / HTTP/1.1
Host: dynamodb.<region>.<domain>;
Accept-Encoding: identity
Content-Length: <PayloadSizeBytes>
User-Agent: <UserAgentString>
Content-Type: application/x-amz-json-1.0
Authorization: AWS4-HMAC-SHA256 Credential=<Credential>, SignedHeaders=<Headers>, Signature=<Signature>
X-Amz-Date: <Date>
X-Amz-Target: DynamoDB_20120810.DescribeTable
{
"TableName":"Thread"
}
Sample Response
HTTP/1.1 200 OK
x-amzn-RequestId: <RequestId>
x-amz-crc32: <Checksum>
Content-Type: application/x-amz-json-1.0
Content-Length: <PayloadSizeBytes>
Date: <Date>
{
"Table": {
"TableArn": "arn:aws:dynamodb:us-west-2:123456789012:table/Thread",
"AttributeDefinitions": [
{
"AttributeName": "ForumName",
"AttributeType": "S"
},
{
"AttributeName": "LastPostDateTime",
"AttributeType": "S"
},
{
"AttributeName": "Subject",
"AttributeType": "S"
}
],
"CreationDateTime": 1.363729002358E9,
"ItemCount": 0,
"KeySchema": [
{
"AttributeName": "ForumName",
"KeyType": "HASH"
},
{
"AttributeName": "Subject",
"KeyType": "RANGE"
}
],
"LocalSecondaryIndexes": [
{
"IndexArn": "arn:aws:dynamodb:us-west-2:123456789012:table/Thread/index/LastPostIndex",
"IndexName": "LastPostIndex",
"IndexSizeBytes": 0,
"ItemCount": 0,
"KeySchema": [
{
"AttributeName": "ForumName",
"KeyType": "HASH"
},
{
"AttributeName": "LastPostDateTime",
"KeyType": "RANGE"
}
],
"Projection": {
"ProjectionType": "KEYS_ONLY"
}
}
],
"ProvisionedThroughput": {
"NumberOfDecreasesToday": 0,
"ReadCapacityUnits": 5,
"WriteCapacityUnits": 5
},
"TableName": "Thread",
"TableSizeBytes": 0,
"TableStatus": "ACTIVE"
}
}
See Also
For more information about using this API in one of the language-specific Amazon SDKs, see the following: