Major Description
The plan when using `NOW_STR()` is:
cbq> EXPLAIN SELECT * FROM `default` WHERE i <= NOW_STR(); |
{
|
"requestID": "7676008d-5686-4a01-92da-914e9840de95", |
"signature": "json", |
"results": [ |
{
|
"#operator": "Sequence", |
"~children": [ |
{
|
"#operator": "IndexScan", |
"index": "order-index", |
"keyspace": "default", |
"namespace": "default", |
"spans": [ |
{
|
"Range": { |
"Inclusion": 1, |
"Low": [ |
"null" |
]
|
}
|
}
|
],
|
"using": "gsi" |
},
|
{
|
"#operator": "Parallel", |
"~child": { |
"#operator": "Sequence", |
"~children": [ |
{
|
"#operator": "Fetch", |
"keyspace": "default", |
"namespace": "default" |
},
|
{
|
"#operator": "Filter", |
"condition": "((`default`.`i`) \u003c= now_str())" |
},
|
{
|
"#operator": "InitialProject", |
"result_terms": [ |
{
|
"expr": "self", |
"star": true |
}
|
]
|
},
|
{
|
"#operator": "FinalProject" |
}
|
]
|
}
|
}
|
]
|
}
|
],
|
"status": "success", |
"metrics": { |
"elapsedTime": "2.432158ms", |
"executionTime": "2.409259ms", |
"resultCount": 1, |
"resultSize": 1865 |
}
|
}
|
Where I would expect it to be more like:
cbq> EXPLAIN SELECT * FROM `default` WHERE i <= 1400; |
{
|
"requestID": "b779b00c-566b-40c8-a603-caea754333a6", |
"signature": "json", |
"results": [ |
{
|
"#operator": "Sequence", |
"~children": [ |
{
|
"#operator": "IndexScan", |
"index": "order-index", |
"keyspace": "default", |
"namespace": "default", |
"spans": [ |
{
|
"Range": { |
"High": [ |
"1400" |
],
|
"Inclusion": 2 |
}
|
}
|
],
|
"using": "gsi" |
},
|
{
|
"#operator": "Parallel", |
"~child": { |
"#operator": "Sequence", |
"~children": [ |
{
|
"#operator": "Fetch", |
"keyspace": "default", |
"namespace": "default" |
},
|
{
|
"#operator": "Filter", |
"condition": "((`default`.`i`) \u003c= 1400)" |
},
|
{
|
"#operator": "InitialProject", |
"result_terms": [ |
{
|
"expr": "self", |
"star": true |
}
|
]
|
},
|
{
|
"#operator": "FinalProject" |
}
|
]
|
}
|
}
|
]
|
}
|
],
|
"status": "success", |
"metrics": { |
"elapsedTime": "36.593542ms", |
"executionTime": "36.569492ms", |
"resultCount": 1, |
"resultSize": 1861 |
}
|
}
|
This seemingly has a performance impact