groupBitmapAnd 计算位图列的 AND,返回 UInt64 类型的基数,如果添加后缀 -State,则返回 位图对象。groupBitmapAnd(expr)参数expr– 生成 AggregateFunction(groupBitmap, UInt*) 类型的表达式。返回值UInt64 类型的值。示例DROP TABLE IF EXISTS bitmap_column_expr_test2;CREATE TABLE bitmap_column_expr_test2(...
groupBitmapAnd 计算位图列的AND,返回UInt64类型的基数,如果添加后缀State,则返回 位图对象。 语法 ```SQL groupBitmapAnd(expr) </span> **参数** <span style="background-color: var(--ifm-code-background)"><code>expr</code></span> – 结果为 <span style="background-color: var(--ifm-code...
groupBitmapAnd(expr) Arguments expr– An expression that results inAggregateFunction(groupBitmap, UInt*)type. Return value Value of theUInt64type. Example DROPTABLEIFEXISTSbitmap_column_expr_test2; CREATETABLEbitmap_column_expr_test2 ( tag_id String, ...
arraySort(bitmapToArray(groupBitmapAndState(uv)))6,arraySort(bitmapToArray(groupBitmapOrState(uv)))7FROM(8SELECT'1'ASid , bitmapBuild(cast([1,2,3,4,5,6,7,8,9,10]asArray(UInt32)))ASuv9UNIONALLSELECT'1'ASid , bitmapBuild(cast([6,7,8,9,10,11,12,13,14,15]asArray...
A.P. Buchmann, M.C. Wu, Supporting Group-By and Pipelining in Bitmap-Enabled Query Processors, Proc. of the 6th Conference on Current Trends in Theory and Practice of Informatics (SOFSEM), Milovy, Czech Republic, (also in Lecture Notes in Computer Science, Vol. 1725, Springer), 1999....
SOFSEM '99, Theory and Practice of Informatics, 26th Conference on Current Trends in Theory and Practice of Informatics, Milovy, Czech Republic, November 27 - December 4, 1999, ProceedingsA.P. Buchmann, M.C. Wu, Supporting Group-By and Pipelining in Bitmap-Enabled Query Processors, Proc. ...
SOFSEM'99 : Theory and practice of informatics: 26th conference on current trends in theory and practice of informatic, November 27-December 4, 1999, Milovy, Czech RepublicA.P. Buchmann, M.C. Wu, Supporting Group-By and Pipelining in Bitmap-Enabled Query Processors, Proc. of the 6th ...