使用Snowflake中的存储过程从表中检索两列
我尝试使用函数从表中检索数据,并将其存储在数组中。但是当我试图返回两个数组中的一个时,我没有得到任何数据。不知道我哪里出错了。
CREATE OR REPLACE PROCEDURE GET_DATE()
RETURNS VARCHAR NOT NULL
LANGUAGE JAVASCRIPT
AS
$$
var array1 = [];
var array2 = [];
array1,array2 = get_columns_data(); // want to get those two array values from the function for further use
return array1; //This is not printing or returning anything
function get_columns_data()
{
var arr1 = [];
var arr2 = [];
cmdl = {sqlText: `SELECT COUNT(*) AS TOTAL, COUNT(DISTINCT(ID)) AS UNIQUE FROM TABLE1;`} //query to get two column values
stmt = snowflake.createStatement(cmdl);
var a = stmt.execute();
while(a.next())
{
var one = a.getColumnValue('TOTAL');
arr1.push(one);
var two = a.getColumnValue('UNIQUE');
arr2.push(two);
}
return arr1,arr2; //returning two arrays; Don't know if this is the correct method to return two arryas
}
$$
解决方案
此行在javascript上不起作用:
return arr1,arr2;
相反,您可以返回数组数组:
return [arr1,arr2];
然后您可以接收单个变量中的数组数组:
arrays = get_columns_data();
测试使用逗号返回不起作用,然后通过返回数组修复:
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