使用CREATE TABLE LIKE创建的表不会自动同步源表的数据。 查询语句中的每一个目标列都要有一个不重复的别名,否则建表语句就会生成同列名的语句导致执行报错。示例如下: CALL hg_create_table_like('new_table', 'select *, 1 as c, ''a'' as c from src_table'); ERROR: column
Lindorm宽表引擎和时序引擎的CREATE TABLE语法差异较大。差异对比请参见下表。 语法要素 宽表引擎 时序引擎 表名(table_identifier) 〇 〇 列定义(column_definition) 〇 〇 主键(primary_key) 〇 〇 索引表达式(KEY|INDEX) 〇 ✖️ 分区(partition_definition) ✖️ 〇 表属性(table_options) 〇 ✖...
Click Columns, enter the number of columns in the Number box, and the space between each column (in inches) in the Spacing box. If the Columns button is grayed out, it's likely because you are working on a table. Columns for tables are described in a separate artic...
Table|Non_unique|Key_name|Seq_in_index|Column_name|Collation|Cardinality|Sub_part|Packed|Null|Index_type|Comment|Index_comment|Visible|Expression|+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+|t1_g|1|t1_g_idx1|1|g|A|NULL|NULL|NULL||SPATIAL|avai...
We have a column with First and Last Names, ID, and their respective marks in a single column, starting with B4. We will convert this into a table with 4 columns, each for First Name, Last name, ID, and Marks, respectively. Method 1 – Apply a Formula with OFFSET, COLUMNS, and ...
table_name 新表的名称。表名必须遵循标识符规则。除了本地临时表名(以单个数字符号 (#) 为前缀的名称)不能超过 116 个字符外,table_name 最多可包含 128 个字符。 column_name 表中列的名称。列名必须遵循有关标识符的规则,而且在表中必须是唯一的。column_name 最多可包含 128 个字符。对于使用 timestamp...
Is the name of the database in which the table is created. schema_name Is the name of the schema to which the new table belongs. table_name column_name Is the name of a column in the table. Column names must follow the rules foridentifiersand must be unique in the table.column_name...
The recommended value is'pixels', because most MATLAB app building functionality measures distances in pixels. You can create a table that rescales based on the size of the parent container by parenting the table to a grid layout manager created using theuigridlayoutfunction. For more information...
SQL CREATE TABLE Syntax CREATETABLEtable_name ( column1 datatype, column2 datatype, column3 datatype, ... ); Here, table_nameis name of the table you want to create columnis the name of a column in the table datatypeis the type of data that the column can hold (e.g., integer...
CREATEEXTERNALTABLE<table_name>([<column_name><column_type>[AS<expr>]][,<column_name><column_type>[AS<expr>]][,...])LOCATION='<string>'FORMAT=(TYPE='CSV'LINE_DELIMITER='<string>'|<expr>FIELD_DELIMITER='<string>'|<expr>ESCAPE='<character>'|<expr>FIELD_OPTIONALLY_ENCLOSED_BY='<char...