📅 最后修改于: 2020-11-29 06:00:45 🧑 作者: Mango
以下是在具有CRUD操作的MariaDB中使用的条件的列表。条件通常与SELECT语句一起使用。
| Index | Conditions | Explanation |
|---|---|---|
| 1) | AND Condition | It is used when 2 or more conditions to be met. |
| 2) | OR Condition | It is used when any one of the conditions are met. |
| 3) | AND & OR | It is used when AND & OR both conditions are met. |
| 4) | LIKE Condition | Use simple pattern matching (wildcards) in a where clause. |
| 5) | RLIKE Condition | Use regular expression matching in a where clause |
| 6) | IN Condition | It is used as an alternative to multiple OR conditions |
| 7) | NOT condition | It is used to negate a condition |
| 8) | IS NULL condition | It is used ti test for a null value. |
| 9) | IS NOT NULL Condition | It is used to test for a not null value. |
| 10) | BETWEEN Condition | It is used to retrieve within a range (inclusive). |
| 11) | EXISTS Condition | It is used specify if condition is met then subquery returns at least one row. |