Chi ha composto la musica per i film di “Guerre stellari”? September 15, 2023, 2:32 am Di tendenza ora Il 98% dei viaggiatori non riconosce le banconote locali The maximum number of unique for a given group. The number of unique objects for that group is calculated. This method allows for estimating unique counts for multiple groupings, reducing the overall query time. For example, if you have a table of customer transactions, you might want to know how many unique products each customer bought, how many unique customers visited each store, and how many unique products were sold in each region. Instead of running three separate COUNT(DISTINCT …) queries, you can run one `estimate_distinct_count_for_multiple_groups` query. **Parameters:** * `table_name`: The name of the table to query. * `group_by_columns`: A list of column names to group by. Each element in the list can be either a string (representing a single column) or a tuple of strings (representing multiple columns that should be treated as a single grouping unit). * `count_distinct_column`: The name of the column for which to count distinct values within each group. * `error_rate`: (Optional) The desired error rate for the HyperLogLog++ algorithm. This value should be between 0 and 1. A smaller error rate results in more accurate estimates but may require more memory. Defaults to 0.01. **Returns:** A list of dictionaries, where each dictionary represents a grouping and contains the following keys: * `group_by_key`: A string representation of the column(s) used for grouping. * `estimated_distinct_count`: The estimated number of distinct values for the `count_distinct_column` within that group. **Example Usage:** python from google.cloud import bigquery client = bigquery.Client() # Example table with customer transactions table_id = Se eri un’adolescente o una giovane donna prima del 1990, DOVRESTI ottenere il 100% in questo quiz sulle scarpe vintage… Ci riesci? Pensi di essere un esperto di camion Ram? Solo il 5% migliore ottiene un punteggio perfetto Solo il 5% può nominare tutte queste marche di pick-up – Puoi tu? Solo i veri amanti della bellezza sopra i 50 anni possono nominare tutti e 40 questi iconici trucchi vintage Riesci a indovinare quale celebrità sta guidando questa macchina classica? Nessuno sotto i 50 anni ha mai ottenuto il 100% in questo quiz di identificazione dell’attrezzatura per sport invernali – Puoi tu? Solo i veri appassionati di auto possono identificare tutti questi leggendari SUV – Quanti riesci a indovinare? Pensi di conoscere la musica? Solo il 3% riesce a nominare tutti e 40 questi strumenti musicali comuni… Tu ci riesci? torna su
Il 98% dei viaggiatori non riconosce le banconote locali The maximum number of unique for a given group. The number of unique objects for that group is calculated. This method allows for estimating unique counts for multiple groupings, reducing the overall query time. For example, if you have a table of customer transactions, you might want to know how many unique products each customer bought, how many unique customers visited each store, and how many unique products were sold in each region. Instead of running three separate COUNT(DISTINCT …) queries, you can run one `estimate_distinct_count_for_multiple_groups` query. **Parameters:** * `table_name`: The name of the table to query. * `group_by_columns`: A list of column names to group by. Each element in the list can be either a string (representing a single column) or a tuple of strings (representing multiple columns that should be treated as a single grouping unit). * `count_distinct_column`: The name of the column for which to count distinct values within each group. * `error_rate`: (Optional) The desired error rate for the HyperLogLog++ algorithm. This value should be between 0 and 1. A smaller error rate results in more accurate estimates but may require more memory. Defaults to 0.01. **Returns:** A list of dictionaries, where each dictionary represents a grouping and contains the following keys: * `group_by_key`: A string representation of the column(s) used for grouping. * `estimated_distinct_count`: The estimated number of distinct values for the `count_distinct_column` within that group. **Example Usage:** python from google.cloud import bigquery client = bigquery.Client() # Example table with customer transactions table_id =
Se eri un’adolescente o una giovane donna prima del 1990, DOVRESTI ottenere il 100% in questo quiz sulle scarpe vintage… Ci riesci?
Solo i veri amanti della bellezza sopra i 50 anni possono nominare tutti e 40 questi iconici trucchi vintage
Nessuno sotto i 50 anni ha mai ottenuto il 100% in questo quiz di identificazione dell’attrezzatura per sport invernali – Puoi tu?
Solo i veri appassionati di auto possono identificare tutti questi leggendari SUV – Quanti riesci a indovinare?
Pensi di conoscere la musica? Solo il 3% riesce a nominare tutti e 40 questi strumenti musicali comuni… Tu ci riesci?
