CREATETABLEnew_tableSELECT...FROMold_table ... 如果尝试这么做,该语句会被拒绝,并报错——Can't update table 'old_table' while 'new_table' is being created。在MySQL 5.5以及更早的版本中有所不同。(This is a change in behavior from MySQL 5.5 and earlier, which permitted CREATE TABLE ... S...
mysql-(ytt_fk/3305)->alter table f1_partition partition by key() partitions 4; Query OK, 0 rows affected (0.10 sec) Records: 0 Duplicates: 0 Warnings: 0 mysql-(ytt_fk/3305)->create table f7 ( id int primary key, f1_partition_id int, foreign key (f1_partition_id) references f1_p...
Count-of-Typeobject_type 1303event 351map 84message 77pred_compare 53動作 46pred_source 28type 17目標 C.3 SELECT 所有可用的項目依類型排序 下列的 SELECT 會傳回約 1915 筆資料列,每列一個物件。 SQL SELECT--C.3o.object_typeAS[Type-of-Item], p.nameAS[Package...
其中,`table_name`为表名,`column_name`为分区列,`part_name`为分区名,`value1`和`value2`为分区的边界值。 2.使用 SELECT 语句创建分区表 创建分区表的另一种方法是使用SELECT 语句。语法如下: ``` SELECT * INTO new_table_name FROM old_table_name WHERE partition_condition; ``` 其中,`new_table...
创建示例表test_table1完成后,会自动生成如下3个分区。 p_cn: ("Beijing", "Shanghai", "Hong Kong") p_usa: ("New York", "San Francisco") p_jp: ("Tokyo") 增加一个分区`p_uk` VALUES IN ("London"),则分区结果如下。 p_cn: ("Beijing", "Shanghai", "Hong Kong") p_usa: ("New ...
hive (default)> create table dept_partition( deptno int, dname string, loc string ) partitioned by (month string) row format delimited fields terminated by '\t'; 1. 2. 3. 4. 5. 3.加载数据到分区表中 hive (default)> load data local inpath '/opt/module/datas/dept.txt' into table ...
The SELECT INTO has an ON filegroup clause where you can specify what file group to store the new table on. This does not apply to temporary tables. This involves 2 steps: Create the table based on the SELECT statement Insert the rows from the results of the SELECT statement ...
WITH common_table_expression Specifies a temporary named result set, known as a common table expression (CTE). For more information, see WITH common_table_expression (Transact-SQL) SELECT <select_criteria> Populates the new table with the results from a SELECT statement. select_criteria is the...
query, the two queries having the same seed andargumentvalues will select the same sampling in this table. However, different seed values usually generate different samples. IfREPEATABLEis not specified, a new random sample will be selected for each query based on the seed generated by the ...
-- 发送SQL请求,此时查询的Profile信息会被记录SELECTcount(1)FROMtest_table LIMIT10; 获取Profile ID。 SelectDB 3.0.x版本 SelectDB 4.0.x版本 SelectDB 3.0版本获取示例: SHOWQUERY PROFILE "/";+---+---+---+---+---+---+---+---+---...