An aggregate function that returns metadata about a set of JSON documents.
This method returns a JSON object with the following format:
{
"doc_count":
“size”:
{
“min”:
“max”:
“avg”:
}
“depth”:
{
“min”:
“max”:
“avg”:
}
“keycnt”:
{
“min”:
“max”:
“avg”:
}
“objcnt”:
{
“min”:
“max”:
“avg”:
}
“arycnt”:
{
“min”:
“max”:
“avg”:
}
“strcnt”:
{
“min”:
“max”:
“avg”:
}
“nbrcnt”:
{
“min”:
“max”:
“avg”:
}
“boolcnt”:
{
“min”:
“max”:
“avg”:
}
“nullcnt”:
{
“min”:
“max”:
“avg”:
}
"keylen":
{
"min":
"max":
"avg":
}
"strvallen":
{
"min":
"max":
"avg":
}
}
For each field, a minimum, maximum, and average is calculated across the entire input set of JSON documents. doc_count is the total number of rows which were counted by the aggregation.