Note
This view is introduced since OceanBase Database V4.1.0.
Purpose
The oceanbase.DBA_OB_USER_DEFINED_RULES view displays the rules for rewriting SQL statements.
Columns
| Column | Type | Nullable? | Description |
|---|---|---|---|
| DB_NAME | varchar(128) | NO | The database name specified when the rule is defined. |
| RULE_NAME | varchar(256) | NO | The name of the rule. |
| RULE_ID | bigint(20) | NO | The ID of the rule. |
| PATTERN | longtext | NO | The pattern to which the rule matches. |
| REPLACEMENT | longtext | NO | Indicates how to rewrite a statement template that matches a pattern. |
| NORMALIZED_PATTERN | longtext | NO | The pattern after parameterization. |
| STATUS | varchar(10) | NO |
|
| VERSION | bigint(20) | NO | The version number of the rule. |
| PATTERN_DIGEST | bigint(20) unsigned | NO | The HASH value of NORMALIZED_PATTERN. |
Sample query
Query the rewrite rules of the current tenant.
obclient [oceanbase]> SELECT * FROM oceanbase.DBA_OB_USER_DEFINED_RULES;
The query result is as follows:
+---------+-----------+---------+--------------------+------------------------+--------------------+--------+---------+---------------------+
| DB_NAME | RULE_NAME | RULE_ID | PATTERN | REPLACEMENT | NORMALIZED_PATTERN | STATUS | VERSION | PATTERN_DIGEST |
+---------+-----------+---------+--------------------+------------------------+--------------------+--------+---------+---------------------+
| test | rule1 | 500019 | select ? from dual | select ? + 1 from dual | select ? from dual | ENABLE | 3 | 2647993221679348756 |
+---------+-----------+---------+--------------------+------------------------+--------------------+--------+---------+---------------------+
2 rows in set