用友U8 sp_columns
时间: 2023-08-04 10:09:50 浏览: 42
用友U8 sp_columns是一个存储过程,用于返回指定表的列信息。根据提供的引用内容,我无法找到与用友U8 sp_columns相关的具体信息。请提供更多的上下文或引用内容,以便我能够更好地回答您的问题。
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相关问题
如何查看INNODB_SYS_columns
需要注意的是,`INNODB_SYS_COLUMNS` 是 MySQL 中的一个系统表,只有具有该表的 SELECT 权限的用户才能够查询该表的数据。
以下是在 MySQL 中查询 `INNODB_SYS_COLUMNS` 的步骤:
1. 连接到 MySQL 数据库服务器,并选择要查询的数据库:
```
mysql -u 用户名 -p
Enter password: 输入密码
mysql> use 数据库名;
```
2. 执行 SELECT 查询语句:
```
mysql> SELECT * FROM information_schema.INNODB_SYS_COLUMNS;
```
该语句将会返回 `INNODB_SYS_COLUMNS` 表中的所有列和行数据。
或者,您也可以使用以下语句查询特定表的列信息:
```
mysql> SELECT * FROM information_schema.INNODB_SYS_COLUMNS WHERE NAME LIKE '表名%';
```
将 `表名` 替换为您要查询的 InnoDB 表的名称,该语句将返回该表的所有列信息。
gpload update_columns
`gpload` is a utility in Greenplum Database that is used to load data into database tables in parallel. The `update_columns` parameter in `gpload` specifies the columns that are to be updated instead of inserted when loading data into an existing table. This parameter is used when performing an `UPSERT` operation, where a row is updated if it already exists in the table, and inserted if it doesn't.
The syntax for using `update_columns` in `gpload` is as follows:
```
UPDATE_COLUMNS ( column_name [, ...] )
```
Here, `column_name` refers to the name of the column that is to be updated. Multiple columns can be specified by separating them with commas.
For example, the following `gpload` configuration file loads data into a table called `my_table`, and updates the `value` column if the primary key `id` already exists in the table:
```
LOAD
TABLE my_table
(
id INTEGER,
value TEXT
)
SOURCE (
FILE='data.csv'
FORMAT='csv'
DELIMITER=','
HEADER='true'
)
MAPPING (
id = 1,
value = 2
)
ERROR_LIMIT = 100
UPDATE_COLUMNS ( value )
;
```
In this example, the `UPDATE_COLUMNS ( value )` parameter specifies that the `value` column should be updated if a row with the same `id` already exists in the `my_table` table.