2)Hive非分区表 -- 统计级别同Hive,TABLE_PARAMS spark.sql.statistics.numRows、spark.sql.statistics.totalSize、transient_lastDdlTime:含义同上 3. Hive和Spark对Hive库表元数据信息统计的主要区别 对Hive表元数据信息统计的SQL语法支持不同
Time taken: 17.528 seconds 3.收集表的某个字段的统计信息 hive> ANALYZE TABLE user_behavior COMPUTE STATISTICS FOR COLUMNS user_id ; 尖叫提示: 可以通过设置:SET hive.stats.autogather=true,进行自动收集统计信息,对于INSERT OVERWRITE/INTO操作的表或者分区,可以自动收集统计信息。值得注意的是,LOAD操作不能够...
2) load gz fromlocal(耗时同put到云上建外部表) hive直接load drop tabletmp_tb_test_gz; CREATE TABLEtmp_tb_test_gz( all string ); LOAD DATALOCAL INPATH '/home/pmp_bi/test/report_test/testlog2/rtb1_bid_20160606_15.log.gz'OVERWRITE INTO TABLE tmp_tb_test_gz; timetaken:401 秒 inserto...
数据的导入/导出(管理员) INSERT OVERWRITE DIRECTORY /logs/ ROW FORMAT delimited fields terminated by ',' SELECT ip , app,last_time from t_access; 0: jdbc:hive2://CentOS:10000> create table t(id string ,name string); 0: jdbc:hive2://CentOS:10000> INSERT into t(id,name) values(1,'...
createtime) AS last_ 1_time, LAG(createtime,2) OVER(PARTITION BY cookieid ORDER BY createtime) AS last_ 2_time向上取两行,但是没有默认值填充,当向上取两行,没有值时,默认返回 null。当取第一行,往上取两行没有值,没 null,当取第二行时依然没有值,当取第三行记录时,它往上两行正好是第一...
createtime string, --访问时间 url string --访问页面 ) row format delimited fields terminated by ','; load data local inpath '/root/hivedata/website_pv_info.txt' into table website_pv_info; load data local inpath '/root/hivedata/website_url_info.txt' into table website_url_info; ...
hive>load data local inpath'/data/apps/test/zhangwenchao/data/data.txt'into table studenttable; 结果: 代码语言:javascript 复制 Loading data to table zwctest.studenttable Table zwctest.studenttable:[numFiles=1,totalSize=2117]OKTime taken:0.659seconds ...
sku_idorder_last_1d_countorder_last_7d_countorder_last_30d_count1105232127483444722#如统计1,7,30...
LAG(createtime,2)over(partitionbycookieidorderbycreatetime)aslast_2_timefromcookie.cookie4; 查询结果 结果说明 last_1_time: 指定了往上第1行的值,default为'1970-01-01 00:00:00'cookie1第一行,往上1行为NULL,因此取默认值1970-01-0100:00:00cookie1第三行,往上1行值为第二行值,2015-04-1010:...
{"movie":"594","rate":"4","timeStamp":"978302268","uid":"1"} 1. 2. 3. 4. 5. 6. 7. 8. 9. 3.2 创建表: create table json_data(data String); 1. 3.3 load载入数据: load data local inpath '/opt/module/hive/data/json2' overwrite into table json_data; ...