sql server version is not null or version <> 0
时间: 2024-03-26 09:38:36 浏览: 140
这个 SQL 查询语句的意思是筛选出版本号不为NULL且不为0的记录。具体解释如下:
```
SELECT * FROM table_name WHERE version IS NOT NULL AND version <> 0;
```
其中,`table_name` 为要查询的表名。`IS NOT NULL` 用于检查版本号不为NULL的记录,`<>` 表示不等于,`0` 表示版本号为0的记录。这个语句的作用是返回所有版本号不为NULL且不为0的记录,可以用于数据筛选和过滤。
相关问题
INSERT INTO MASTER.DBO.GTA_DBS(DBNAME) SELECT name FROM MASTER.DBO.SYSDATABASES where name like 'SZL2_BONDINFO_202303%' and (version is not null or version <> 0)
这是一个 SQL 查询语句,它的作用是将符合条件的数据库名称(以'SZL2_BONDINFO_202303'开头且版本号不为空或不为0的数据库)插入到名为GTA_DBS的数据库表中的DBNAME列中。具体来说,这个语句首先从系统数据库中查询符合条件的数据库名称,然后将这些名称插入到GTA_DBS表中的DBNAME列中。
mysql> CREATE TABLE users ( -> id INT AUTO_INCREMENT PRIMARY KEY, -> username VARCHAR(255) NOT NULL, -> password VARCHAR(255) NOT NULL -> ); Query OK, 0 rows affected (0.06 sec) mysql> Welcome to the MySQL monitor. Commands end with ; or \g. ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'Welcom e to the MySQL monitor. Commands end with' at line 1 ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'or' at line 1 -> Your MySQL connection id is 54623110 -> Server version: 8.0.32 Source distribution -> Copyright (c) 2000, 2022, Oracle and/or its affiliates. -> Oracle is a registered trademark of Oracle Corporation and/or its -> affiliates. Other names may be trademarks of their respective -> owners. -> Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. -> mysql> CREATE TABLE users ( -> -> id INT AUTO_INCREMENT PRIMARY KEY, -> -> username VARCHAR(255) NOT NULL, -> -> password VARCHAR(255) NOT NULL -> -> ); ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '. Your MySQL connection id is 54623110 Server version: 8.0.32 Source distributio' at line 1 mysql> Query OK, 0 rows affected (0.06 sec) -> mysql> -> SHOW TABLES; ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'Query OK, 0 rows affected (0.06 sec) mysql> SHOW TABLES' at line 1 mysql>
在你的输入中,出现了一些错误。请注意在 MySQL 命令行中输入命令时的语法和顺序。下面是修正后的示例:
```
mysql> CREATE TABLE users (
-> id INT AUTO_INCREMENT PRIMARY KEY,
-> username VARCHAR(255) NOT NULL,
-> password VARCHAR(255) NOT NULL
-> );
Query OK, 0 rows affected (0.06 sec)
mysql> SHOW TABLES;
```
你可以将以上代码复制到 MySQL 命令行中执行。第一段代码用于创建名为 `users` 的表,并定义了三个列:`id`、`username` 和 `password`。第二段代码用于查看数据库中的表的列表。执行完这两段代码后,你应该能够成功创建表并查看到该表。
确保在输入命令时不要复制其他额外的文本,只复制正确的代码段即可。如果仍然遇到问题,请检查 MySQL 版本和语法是否匹配,并确保正确输入命令。
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