create table ACT_GE_PROPERTY
时间: 2023-08-12 11:04:14 浏览: 43
Sure! Here's the SQL query to create the "ACT_GE_PROPERTY" table:
```sql
CREATE TABLE ACT_GE_PROPERTY (
NAME VARCHAR(255) NOT NULL,
VALUE VARCHAR(4000),
REV_ INTEGER,
PRIMARY KEY (NAME)
);
```
This query creates the "ACT_GE_PROPERTY" table with three columns: "NAME", "VALUE", and "REV_". The "NAME" column stores the property name (limited to 255 characters), the "VALUE" column stores the property value (limited to 4000 characters), and the "REV_" column is an integer used for revision tracking. The primary key is set on the "NAME" column.
相关问题
以下建表语句正确的有( ) 2分 CREATE TABLE table_b AS SELECT * FROM table_a; CREATE TABLE table_b STORED as ORC_TRANSACTION AS SELECT * FROM table_a; CREATE TABLE table_b STORED as TEXTFILE AS SELECT * FROM table_a; CREATE TABLE table_b STORED as HOLODESK AS SELECT * FROM table_a;
以下表语句中正确的是:
- CREATE TABLE table_b SELECT * FROM table_a;
该语句用创建一个名为table_b的表,将表table_a中的所有数据复制到新表中。
- CREATE table_b STORED as ORC_TRANSACTION AS * FROM table_a;
该语是错误的。ORC_TRANSACTION不是有效的存储格式。
- CREATE TABLE table_b STORED as TEXTFILE AS SELECT * FROM table_a;
该语句是正确的。它创建了一个名为table_b的表,并且将表table_a中的数据以TEXTFILE格式存储到新表中。
- CREATE TABLE table_b STORED as HOLODESK AS SELECT * FROM table_a;
该语句是错误的。HOLODESK不是一个有效的存储格式。
所以,正确的建表语句有两个:
1. CREATE TABLE table_b AS SELECT * FROM table_a;
2. CREATE TABLE table_b STORED as TEXTFILE AS SELECT * FROM table_a;
CREATE TABLE new_tableAS SELECT *FROM old_tableWHERE 1=0;和CREATE TABLE new_table LIKE old_table;都显示错误
如果你在执行`CREATE TABLE new_table AS SELECT * FROM old_table WHERE 1=0;`和`CREATE TABLE new_table LIKE old_table;`时都出现了语法错误,那么可能是因为你的SQL数据库不支持这种语法。不同的SQL数据库可能具有不同的语法规则,因此你需要查看你正在使用的数据库的文档以了解正确的语法。以下是一些可能适用于不同数据库的语法:
MySQL:
```
CREATE TABLE new_table LIKE old_table;
```
Oracle:
```
CREATE TABLE new_table AS SELECT * FROM old_table WHERE 1=0;
```
PostgreSQL:
```
CREATE TABLE new_table (LIKE old_table INCLUDING ALL);
```
SQL Server:
```
SELECT * INTO new_table FROM old_table WHERE 1=0;
```
请注意,这些语法可能会复制表结构,但不一定会复制表的约束、索引、触发器等元素。如果你需要复制这些元素,请考虑使用其他方法,如使用数据库管理工具或编写脚本手动复制。