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cleaner.ts
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cleaner.ts
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/**
* @license
* Copyright FabricElements. All Rights Reserved.
*/
import {BigQuery} from '@google-cloud/bigquery';
import {logger} from 'firebase-functions/v2';
const bigquery = new BigQuery();
/**
* Create Query for Delete Duplicates.
* @param {any} filter
* @return {string}
*/
const query = (filter: {
column?: string,
dataset: string,
table: string,
timestamp: string,
}): string => {
if (!filter.dataset) {
throw new Error('Dataset or Table not defined');
}
return `DELETE
FROM
\`${filter.dataset}.${filter.table}\`
WHERE
STRUCT(id,
${filter.timestamp}
${filter.column ? `,${filter.column}` : ''} ) NOT IN (
SELECT
AS STRUCT id,
${filter.timestamp}
${filter.column ? `,${filter.column}` : ''}
FROM (
SELECT
DISTINCT id,
MAX(${filter.timestamp}) AS ${filter.timestamp}
${filter.column ? `,${filter.column}` : ''}
FROM
\`${filter.dataset}.${filter.table}\`
GROUP BY
id ${filter.column ? `,${filter.column}` : ''} ));`;
};
/**
* Big Query Clean Database
* @param {any} filter
* @return {Promise<void>}
*/
export default async (filter: {
column?: string,
dataset: string,
table: string,
timestamp: string,
}): Promise<void> => {
const sqlQuery = query(filter);
try {
const [job] = await bigquery.createQueryJob({
query: sqlQuery,
});
const [list] = await job.getQueryResults();
logger.info(`Result delete duplicates ${list}`);
} catch (error) {
logger.warn(`Fail delete duplicates. Dataset: ${filter.dataset}, table: ${filter.table}`, error);
}
};