数据仓库服务 GAUSSDB(DWS)-功能函数:hll_add_rev(hll_hashval, hll)

时间:2024-09-24 15:54:39

hll_add_rev(hll_hashval, hll)

描述:把hll_hashval加入到hll中,和hll_add功能一样,只是参数位置进行了交换。

返回值类型:hll

示例:

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SELECT hll_add_rev(hll_hash_integer(1), hll_empty());
       hll_add_rev        
--------------------------
 \x128b7f8895a3f5af28cafe
(1 row)
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