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                            # dblink_is_busy



## Name

dblink_is_busy?--?檢查是否連接忙于異步查詢

## Synopsis

```
dblink_is_busy(text connname) returns int
```



## 描述

`dblink_is_busy`測試是否異步查詢在進行中。



## 參數

`conname`

檢查連接的名字。



## 返回值

如果連接繁忙，則返回1，如果不繁忙，則返回0。 如果該函數返回0，那么保證`dblink_get_result`將不阻塞。



## 例子

```
SELECT dblink_is_busy('dtest1');
```








                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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