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CLOUD_SDK_SK in the local environment String ak = System.getenv("CLOUD_SDK_AK"); String sk = System.getenv("CLOUD_SDK_SK");
CLOUD_SDK_SK in the local environment String ak = System.getenv("CLOUD_SDK_AK"); String sk = System.getenv("CLOUD_SDK_SK");
CLOUD_SDK_SK in the local environment String ak = System.getenv("CLOUD_SDK_AK"); String sk = System.getenv("CLOUD_SDK_SK");
CLOUD_SDK_SK in the local environment String ak = System.getenv("CLOUD_SDK_AK"); String sk = System.getenv("CLOUD_SDK_SK");
CLOUD_SDK_SK in the local environment String ak = System.getenv("CLOUD_SDK_AK"); String sk = System.getenv("CLOUD_SDK_SK");
CLOUD_SDK_SK in the local environment String ak = System.getenv("CLOUD_SDK_AK"); String sk = System.getenv("CLOUD_SDK_SK");
CLOUD_SDK_SK in the local environment String ak = System.getenv("CLOUD_SDK_AK"); String sk = System.getenv("CLOUD_SDK_SK");
CLOUD_SDK_SK in the local environment String ak = System.getenv("CLOUD_SDK_AK"); String sk = System.getenv("CLOUD_SDK_SK");
CLOUD_SDK_SK in the local environment String ak = System.getenv("CLOUD_SDK_AK"); String sk = System.getenv("CLOUD_SDK_SK");
CLOUD_SDK_SK in the local environment String ak = System.getenv("CLOUD_SDK_AK"); String sk = System.getenv("CLOUD_SDK_SK");
CLOUD_SDK_SK in the local environment String ak = System.getenv("CLOUD_SDK_AK"); String sk = System.getenv("CLOUD_SDK_SK");
CLOUD_SDK_SK in the local environment String ak = System.getenv("CLOUD_SDK_AK"); String sk = System.getenv("CLOUD_SDK_SK");
CLOUD_SDK_SK in the local environment String ak = System.getenv("CLOUD_SDK_AK"); String sk = System.getenv("CLOUD_SDK_SK");
maintenance_work_mem 参数说明：设置在维护性操作（比如VACUUM、CREATE INDEX、ALTER TABLE ADD FOREIGN KEY等）中可使用的最大的内存。该参数的设置会影响VACUUM、VACUUM FULL、CLUSTER、CREATE INDEX的执行效率。 参数类型：USERSET
{configuration_option} [, ...] ); ADD MAPPING FOR选项为文本搜索配置增加字串类型映射；如果ADD MAPPING FOR后面任何一个字串类型的映射已经存在于此文本搜索配置中，那么系统将会报错。 ALTER MAPPING FOR选项会首先清除已有的字串类型映射，然后添加指定的字串类型映射。
{configuration_option} [, ...] ); ADD MAPPING FOR选项为文本搜索配置增加字串类型映射；如果ADD MAPPING FOR后面任何一个字串类型的映射已经存在于此文本搜索配置中，那么系统将会报错。 ALTER MAPPING FOR选项会首先清除已有的字串类型映射，然后添加指定的字串类型映射。
UPDATE reason SET r_reason_sk = r_reason_sk * 2; 不含WHERE子句表示更新所有r_reason_sk的值： 1 UPDATE reason SET r_reason_sk = r_reason_sk + 100; 将表reason中r_r
C_CUSTKEY BIGINT NOT NULL CONSTRAINT C_CUSTKEY_pk PRIMARY KEY , C_NAME VARCHAR(25) , C_ADDRESS VARCHAR(40)
ss_sold_date_sk integer , ss_sold_time_sk integer , ss_item_sk
CLOUD_SDK_SK in the local environment String ak = System.getenv("CLOUD_SDK_AK"); String sk = System.getenv("CLOUD_SDK_SK");
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