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docs/docs-cn/13.reference-guide/2.system-variable/67.ob_enable_blk_nestedloop_join.md Normal file
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ob_enable_blk_nestedloop_join
==================================================
ob_enable_blk_nestedloop_join 用于设置是否允许打开 block nested loop join。
| **属性** | **描述** |
|----------|------------------------------------------------------------------------------------------------------------|
| 参数类型 | bool |
| 默认值 | 0 |
| 取值范围 | * 0：不允许 * 1：允许 |
| 生效范围 | * GLOBAL * SESSION |
| 是否参与序列化 | 是 |
| 是否影响计划生成 | 是 |