Hologres中CREATE TABLE AS的命令语法如下。 --从一张源表复制一张新表 CREATE TABLE [ IF NOT EXISTS ] <new_table_name> AS TABLE <src_table_name> [ WITH [ NO ] DATA ] --从select query复制一张新表 CREATE TABLE [ IF NOT EXISTS ] <new_table_name> AS <select_query> [ WITH [ NO ]...
Tables are created with no data unless a subquery is specified. You can add rows to a table with the INSERT statement. After creating a table, you can define additional columns, partitions, and integrity constraints with the ADD clause of the ALTER TABLE statement. You can change the definiti...
obclient>CREATETABLEtbl4(col1INTPRIMARYKEY,col2INT)PARTITIONBYHASH(col1)PARTITIONS8;Query OK,0rowsaffected 创建一级分区为 Range 分区,二级分区为 Hash 分区的表。 obclient>CREATETABLEtbl5(col1INT,col2INT,col3INT)PARTITIONBYRANGE(col1)SUBPARTITIONBYHASH(col2)SUBPARTITIONS5(PARTITIONp0VALUESLESS TH...
obclient> CREATE TABLE tbl10(col1 INT PRIMARY KEY, col2 INT) PARALLEL 3; Query OK, 0 rows affected 使用函数定义列的默认值。 obclient> CREATE SEQUENCE SEQ_PERSONIPTVSEQ START WITH 1 MINVALUE 1 MAXVALUE 10 INCREMENT BY 2 NOCYCLE NOORDER CACHE 30; Query OK, 0 rows affected obclient> ...
CREATE[UNLOGGED]TABLEtable_name[(column_name[,...])][WITH({storage_parameter=value}[,...])][COMPRESS|NOCOMPRESS][DISTRIBUTEBY{REPLICATION|ROUNDROBIN|{[HASH](column_name)}}][COMMENT[=]'text']ASquery[WITH[NO]DATA]; 参数说明 UNLOGGED ...
判断题CREATE TABLE之前必须利用USE选择数据库,否则会报“No database selected”错误。 参考答案:错误 点击查看答案解析
[ WITH ( <table_option> [ ,... n ] ) ] [ ; ] <column_definition> ::= column_name <data_type> [ FILESTREAM ] [ COLLATE collation_name ] [ SPARSE ] [ MASKED WITH ( FUNCTION = 'mask_function' ) ] [ [ CONSTRAINT constraint_name ] DEFAULT constant_expression ] [ IDENTITY [ (...
[ WITH ( <table_option> [ ,... n ] ) ] [ ; ] <column_definition> ::= column_name <data_type> [ FILESTREAM ] [ COLLATE collation_name ] [ SPARSE ] [ MASKED WITH ( FUNCTION = 'mask_function' ) ] [ [ CONSTRAINT constraint_name ] DEFAULT constant_expression ] [ IDENTITY [ (...
百度试题 结果1 题目CREATE TABLE之前必须利用USE选择数据库,否则会报“No database selected”错误。 A. 正确 B. 错误 相关知识点: 试题来源: 解析 B 反馈 收藏
[ WITH ( <table_option> [ ,... n ] ) ] [ ; ] <column_definition> ::= column_name <data_type> [ FILESTREAM ] [ COLLATE collation_name ] [ SPARSE ] [ MASKED WITH ( FUNCTION = 'mask_function' ) ] [ [ CONSTRAINT constraint_name ] DEFAULT constant_expression ] [ IDENTITY [ (...