[英]Calculated column based on another calculated field BigQuery
您好我正在嘗試在選擇中使用已計算的值來計算另一個值,例如:
SELECT 1+1 AS two, ***two* + 2** AS four FROM table
這在 BigQuery 中可行嗎? 我確定它在 SAS 上,關鍵字 CALCULATED 如下:
SELECT 1+1 as two, ***CALCULATED two* + 2** AS four FROM table
謝謝,
以下是我個人如何處理這種情況的示例(經常順便說一句)
SELECT two, two + 2 AS four
FROM table, UNNEST([STRUCT(1+1 as two)])
您不能在同一選擇中使用別名。 一個選項可以使用子選擇:
WITH my_table AS (
SELECT 1+1 AS two FROM table
)
SELECT two + 2 AS four FROM my_table
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