EXECUTE

EXECUTE

The EXECUTE statement executes a prepared statement. When specified, the name should identify a prepared statement. An error is returned if the name does not identify a prepared statement. When specified, the encoded_plan should be the result of a prepared statement. An error is returned if the encoded_plan cannot be converted to a prepared statement.

Examples

Prepared statement without a name

The following example shows how to prepare the statement without specifying a name.

Request:
$ curl -v http://localhost:8093/query/service \
-d 'statement=PREPARE SELECT text FROM tweets WHERE rating > $r AND created_at > $date'    
Response
< HTTP/1.1 200 OK
{
  "requestID": "a339a496-7ed5-4625-9c64-0d7bf584a1bd",
  "signature": "json",
  "results": [
  {  "encoded_plan": "H4sIAAAJbogA/5yRQU/6QBDFvwpZ/gdIIAAA==",
    "name": "a1355198-2576-4e3d-af04-5acc77d8a681",
     "operator": {
            "#operator": "Sequence",
            "~children": [
            // Content redacted
            ]
            },
     "signature": {
     "text": "json"
  },
  "text": "PREPARE SELECT text FROM tweets WHERE rating > $r AND created_at > $date"
  }
  ],
  "status": "success",
  "metrics": {
  "elapsedTime": "1.970679ms",
  "executionTime": "1.889351ms",
  "resultCount": 1,
  "resultSize": 2261
 }
}

The following example uses the server-generated name of the prepared statement to execute the statement.

Request:
$ curl -v http://localhost:8093/query/service -d 'prepared="a1355198-2576-4e3d-af04-5acc77d8a681"&$r=9.5&$date="1-1-2014"'
Response:
< HTTP/1.1 200 OK
{
 "requestID": "1bd9956b-bc8e-478a-bd84-3955fe2db047",
 "signature": {
 "text": "json"
 },
 "results": [
 {
  "text": "Couchbase is my favorite database"
 }
 ],
 "status": "success",
 "metrics": {
 "elapsedTime": "1.527795ms",
 "executionTime": "1.443748ms",
 "resultCount": 0,
 "resultSize": 0
 }
}
$          

Specifying a name for the prepared statement

The following example specifies a name for the prepared statement.

Request:
$ curl -v http://localhost:8093/query/service \
-d 'statement=PREPARE fave_tweets FROM SELECT text FROM tweets WHERE rating >= $r'
      
Response:
< HTTP/1.1 200 OK
 {
        "requestID": "a339a496-7ed5-4625-9c64-0d7bf584a1bd",
        "signature": "json",
        "results": [
        {   "encoded_plan": "H4sIAAAJbogA/5yRQU/6QBDFvwpZ/gdIIAAA==",
        "name": "fave_tweets",
        "operator": {
        // and so on
        ...
     

The following example uses the name specified in the example above to run the prepared statement.

Request:
$ curl -v http://localhost:8093/query/service -d 'prepared="fave_tweets"&$r=9.5'      
Response
< HTTP/1.1 200 OK
{
 "requestID": "1bd9956b-bc8e-478a-bd84-3955fe2db047",
 "signature": {
 "text": "json"
 },
 "results": [
 {
   "text": "Couchbase is my favorite database"
  }
  ],
 "status": "success",
 "metrics": {
 "elapsedTime": "1.527795ms",
 "executionTime": "1.443748ms",
 "resultCount": 0,
 "resultSize": 0
 }
 }
$      

Specifying the name and the encoded_plan

The following example specifies a name for the prepared statement and the response includes an encoded_plan.

Request:
$ curl -v http://localhost:8093/query/service \
-d 'statement=PREPARE fave_tweets FROM SELECT text FROM tweets WHERE rating >= $r'    
Response:
< HTTP/1.1 200 OK
{
  "requestID": "a339a496-7ed5-4625-9c64-0d7bf584a1bd",
  "signature": "json",
  "results": [
  {   "encoded_plan": "H4sIAAAJbogA/5yRQU/6QBDFvwpZ/gdIIAAA==",
        "name": "fave_tweets",
        "operator": {
        // and so on
        ...
The following example uses the name and encoded_plan from the example above to run the prepared statement.
Request
$ curl -v http://localhost:8093/query/service -H "Content-Type: application/json" -d  \
'{ "prepared":"fave_tweets", "encoded_plan":"H4sIAAAJbogA/5yRQU/6QBDFvwpZ/gdIIAAA==", "$r":9.5 }' 
Response
< HTTP/1.1 200 OK
{
 "requestID": "1bd9956b-bc8e-478a-bd84-3955fe2db047",
 "signature": {
 "text": "json"
 },
 "results": [
  {
   "text": "Couchbase is my favorite database"
   }
   ],
  "status": "success",
  "metrics": {
  "elapsedTime": "1.527795ms",
  "executionTime": "1.443748ms",
  "resultCount": 0,
  "resultSize": 0
   }
 }
$