首先分享一下 EMR 产品的优势,以及可服务的场景。## **EMR 产品优势与面向场景**![picture.image](https://p6-volc-community-sign.byteimg.com/tos-cn-i-tlddhu82om/95c5c4b1b7b74b86a83a5fdbd2cb48e9~tplv-t... (https://p6-volc-community-sign.byteimg.com/tos-cn-i-tlddhu82om/89aa641629dc499890df78ce5c22dbfe~tplv-tlddhu82om-image.image?=&rk3s=8031ce6d&x-expires=1715703638&x-signature=FDTz0e91JKGeTSKV3h%2F4aS...
[picture.image](https://p6-volc-community-sign.byteimg.com/tos-cn-i-tlddhu82om/2ff858d8f29a405ba0e8459faa1eaedc~tplv-tlddhu82om-image.image?=&rk3s=8031ce6d&x-expires=1715790090&x-signature=UTIaZOO5l... [picture.image](https://p6-volc-community-sign.byteimg.com/tos-cn-i-tlddhu82om/f87f7b03ad8848b79ad93acbd9c28c07~tplv-tlddhu82om-image.image?=&rk3s=8031ce6d&x-expires=1715790090&x-signature=%2F5GeTsj...
hmac import requests # pip install requestsimport datetimeimport jsonimport csv, codecsimport mathfrom requests.models import codesdef sign(key, msg): #定义sign函数 return hmac.new(key, msg.encode('utf-8'), hashlib.sha256).digest() #返回一些带格式的参数def getSignatureKey(key, dateStamp, regionName, serviceName): #自定义函数getSigatureKey kDate = sign(key.encode('utf-8'), dat...
CURRENTLY on a specific index creates a new index (like CREATE INDEX CONCURRENTLY), then renames the old index away and the new index in place and adjusts the dependencies, and then drops the old index (like DROP INDEX CONCURRENTLY). The REINDEX command also has the capability to run its other variants (TABLE, DATABASE) with the CONCURRENTLY option (but not SYSTEM). The reindexdb command gets th...
CURRENTLY on a specific index creates a new index (like CREATE INDEX CONCURRENTLY), then renames the old index away and the new index in place and adjusts the dependencies, and then drops the old index (like DROP INDEX CONCURRENTLY). The REINDEX command also has the capability to run its other variants (TABLE, DATABASE) with the CONCURRENTLY option (but not SYSTEM). The reindexdb command gets th...