ビッグクエリDML挿入-選択を私はテーブル構造（テーブル名：Recalled_transaction）を持って繰り返しテーブル

Question

へと次のように：

[{ 
"name": "STR_NBR", 
"type": "STRING", 
"mode": "NULLABLE" 
}, 
{ 
"name": "RGSTR_NBR", 
"type": "INTEGER", 
"mode": "NULLABLE" 
}, 
{ 
"name": "POS_TRANS_ID", 
"type": "INTEGER", 
"mode": "NULLABLE" 
}, 
{ 
"name": "SLS_DT", 
"type": "DATE", 
"mode": "NULLABLE" 
}, 
{ 
"name": "TRANS_ORIG_SRC", 
"type": "RECORD", 
"mode": "REPEATED", 
"fields": [ 
    { 
    "name": "POS_APPL_TYP_CD", 
    "type": "STRING", 
    "mode": "NULLABLE" 
    }, 
    { 
    "name": "USER_ID", 
    "type": "STRING", 
    "mode": "NULLABLE" 
    } 
] 
}, 
{ 
"name": "RECALLED_TXN", 
"type": "RECORD", 
"mode": "REPEATED", 
"fields": [ 
    { 
    "name": "POS_SEQ_NBR", 
    "type": "STRING", 
    "mode": "REPEATED" 
    }, 
    { 
    "name": "SUB_SYS_CD", 
    "type": "STRING", 
    "mode": "NULLABLE" 
    } 
] 
} 
] 

を、私は、インサートを使用してこの構造に通常のテーブルのセットから挿入したいです-select as（標準SQLのDML）。誰も以前にしたことがありますか？どんな助けもありがとうございます。

ありがとうございました

Answer 1

同じスキーマでテーブルを作成し、挿入するサンプルクエリをまとめました。 2つのテーブルがあるため、具体的にはJOINが必要で、GROUP BYを使用する必要があります。

INSERT mydataset.SampleDmlTable 
    (STR_NBR, RGSTR_NBR, POS_TRANS_ID, SLS_DT, TRANS_ORIG_SRC, RECALLED_TXN) 
WITH T AS (
    SELECT CAST(x AS STRING) AS STR_NBR, 
    10 - x AS RGSTR_NBR, 
    x AS POS_TRANS_ID, 
    DATE_SUB(CURRENT_DATE(), INTERVAL x DAY) AS SLS_DT, 
    CONCAT('foo_', CAST(x AS STRING)) AS POS_APPL_TYP_CD, 
    CAST(x AS STRING) AS USER_ID, 
    [CONCAT('bar_', CAST(x AS STRING)), 'baz'] AS POS_SEQ_NBR, 
    CAST(10 - x AS STRING) AS SUB_SYS_CD 
    FROM UNNEST([1, 1, 0, 3, 2, 2, 2]) AS x 
) 
SELECT 
    STR_NBR, 
    RGSTR_NBR, 
    POS_TRANS_ID, 
    SLS_DT, 
    ARRAY_AGG(STRUCT(POS_APPL_TYP_CD, USER_ID)) AS TRANS_ORIG_SRC, 
    ARRAY_AGG(STRUCT(POS_SEQ_NBR, SUB_SYS_CD)) AS RECALLED_TXN 
FROM T 
GROUP BY 1, 2, 3, 4;