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The BigQuery IFNULL () and BigQuery NULLIF () functions work exactly opposite to each other: BigQuery IFNULL () allows you to replace NULL values with another value. Data keeps changing all the time so you need to test the values before you divide. データポータルでの BigQuery の GEOGRAPHY ポリゴンのサポートにより、階級区分図で任意のポリゴンを可視化できるようになりました。GEOGRAPHY フィールドが含まれている BigQuery データに接続すると、地理空間データとして認識されます。SELECT COUNT (field1), bucket FROM ( SELECT field1, CASE WHEN age >= 0 AND age < 10 THEN 1 WHEN age >= 10 AND age < 20 THEN 2 WHEN age >= 20 AND age < 30 THEN 3. format (table. Previous code which worked fine: SELECT COUNT(CASE WHEN (survey_responses. (Exits) as Exits, SUM(Pageviews) as Pageviews, safe_divide(SUM(TIMEOnPage),(SUM(Pageviews). To prevent errors from casting, use SAFE_CAST. 1. When you connect to BigQuery data that contains GEOGRAPHY fields, you’ll see them recognized as geospatial data: To visualize this data, add a Google Maps “filled map” visualization: Then, for the Geospatial. error:Query Failed Error:. Hello Everyone, a complete newbie at SQL thrown into the deep end in my new job. 黒魔術として名高い「ビッグデータ分析・活用のためのSQLレシピ」。. I am working on exporting large dataset from bigquery to Goolge cloud storage into the compressed format. mk_paymentstatus) AS DepositAttempts, SUM(CASE WHEN t. I tried to run the SPLIT() function in BigQuery but it only gives the first value. SELECT h3, ANY_VALUE(h3geo) as hex_geo, SUM(SAFE_DIVIDE(intersection_h3,cbg_area) * total_pop) as h3_pop FROM geom_overlap GROUP BY h3. Netezza SQL is based on Postgres 7. SELECT field1, field2 FROM temp_table WHERE rnd >= 0. The behavior of IEEE_DIVIDE is further illustrated in the table below. g. The process to enable integration with Google BigQuery is simple. Step 2: Once logged in, go to the Explorer panel, and expand your Google BigQuery project. Sorted by: 0. 18. Description & motivation Created safe_divide macro to return null when dividing by 0 across all warehouses. SAFE_DIVIDE. Look at the below example. dataset. BigQuery: No matching signature for operator over Github public data. BigQuery’s WITH statement, also known as Common Table Expressions (CTEs), can make your queries more readable and maintainable. This function handles leap seconds by smearing them across a window of 20 hours around the inserted leap second. Because it is possible that a page path only has exit pageviews, we need to use a safe divide function to avoid dividing the total time on page with zero pageviews. So the result might look like this:Select Add in the Custom Fields section of the field picker. Google BigQuery is a serverless data warehouse solution that aims to be cost-effective and highly scalable, allowing businesses to analyze large amounts of data. As suggested by @nbk, you may use the below to generate decimals (including leading zeros based your sample data) and then use a string function to specify desired precision. I put together a safe-divide function as we do a lot of dividing with our invoice data, and it saves from having to add conditionalized fluff when building our queries. 5. Please use the safe_divide command, if there is any chance of diving by zero. id), 1, 0)) AS numPKGoals, SAFE_DIVIDE( SUM(IF(101 IN UNNEST(tags. SAFE_DIVIDE (x, y): Safely divides two numeric values, handling nulls and division by zero gracefully. Up now: Calculating page-specific metrics. Merged. When getting started in BigQuery—or with any new schema—it’s good to do a little testing a. 可以用 BigQuery scheduled queries or with a Cloud Dataprep / Cloud Dataflow workflow. 5. In BigQuery, the SAFE_ prefix is used as a way to perform safe operations on potentially null or problematic data, preventing errors that might occur with traditional SQL operations. It's likely the bulk of your query time. Gets the number of rows in the input, or the number of rows with an expression evaluated to any value other than NULL . Google BigQuery, a powerful serverless data warehouse, has become a cornerstone of data analysis and machine learning pipelines for many organizations. Using BigQuery, is there a way I can select __TABLES__ from every dataset within my project? I've tried SELECT * FROM '*. 168. SAFE_ADD: Equivalent to the addition operator (X + Y), but returns NULL if overflow occurs. Gets the number of intervals between two TIME values. 0. new_york_subway. You can then create/manage buckets of slots called projects, folders, or organizations to use the slots in these reservations. name) AS name, ANY_VALUE (sale_item. Federated queries use the BigQuery Connection API to establish a connection with Spanner or Cloud SQL. I have the following. Follow. 5 Harness the Power of WITH Statements. BigQuery’s query mechanism is powered by. SAFE_NEGATE (x. Ex column1 has 8 records of the number 2. Queries that use functions and operators that are not on this list might run more slowly. 行動ログ分析、集計などで参考にさせていただいてます。. prefix. If Y=0 and X=0, returns NaN. (male_babies + female_babies) AS num_babies, SAFE_DIVIDE(male_babies, male_babies + female_babies) AS frac_male FROM all_babies WHERE male_babies > 0 AND. Therefore, the query would not show the desired effect after 30th of August 2022. errors[0]['message'] and everything was fine so far. Below, I’ll discuss how we recently helped a client connect all of their clients’ Google Analytics accounts to one BigQuery instance and set up an automated process to consolidate all of that data into a unified table for downstream analysis/data visualization. But I'm finding issues on how to divide a table into multiple 10k temp tables. Aggregate functions. Improve this answer. Special Mention: BigQuery also has SAFE_ADD, SAFE_SUBTRACT, SAFE_MULTIPLY, and SAFE_NEGATE functions that will return a null value if an overflow occurs. Basically the prefix SAFE_ can be added to other BigQuery functions to handle errors. Added SAFE_DIVIDE in job_execution. BigQuery: Divided by sum of values in column to find the ratio. Client () query = """ SELECT column FROM table GROUP BY column """. 1 Install the client library. Think of most frequently used marketing channel, device, visit frequency & recency and most viewed. Safe division. Approximate. Splitting with an. BigQuery is a fully managed enterprise data warehouse, a scalable and distributed analysis engine capable to query terabytes in seconds and petabytes in minutes. CostByState cbs ON p. In the Cloud Console,. zipcode = b. BigQuery is Google Cloud's fully managed, petabyte-scale, and cost-effective analytics data warehouse that lets you run analytics over vast amounts of data in near real time. Currently we have limited slots in our GCP project. Checklist This code is. name, SUM(number) AS total. 03 per GB of data copied. SELECT YEAR, period, DECODE (recd_qty, 0, NULL, round ( (1- sum (rej_qty) / sum (recd_qty))*100, 0)) The WHERE clause would not solve the problem as he is summing recd_qty s before dividing. 234 becomes 1823. g. Solve word questions too. CREATE OR REPLACE VIEW [Dataset Name]. ) How do we do. SELECT actiontimestamp, medium, source, sessions, ROUND(SAFE_DIVIDE(pageviews, sessions), 0) AS pages_per_session, CASE WHEN sessions = 0 THEN 0 ELSE. Create org-wide libraries of business logic within shared datasets. Approximate. For BYTES, you must specify a delimiter. Storage management Internally, BigQuery stores data in a proprietary columnar format called CapacitorUnderstand slots. I want to count the number of distinct values across my user funnel per visit_id which are stored in the following columns: first_pgroup,second,third,forth,fifth,sixth,seventh,eighth,ninth,tenth. Google BigQuery function is one of the system syntaxes used to fetch data from a query table for analysis. Share. Aggregate functions. For example, SAFE_CAST or SAFE_SUBSTR We reviewed 3 ways to. We want to have quota limit for our user at Dataset level, i. Go to Replica. Then run a similar query to find the 2nd value, and so on. Here's the simple function that I wrote. WITH a AS ( SELECT date AS Date, SUM (Val1 / NULLIF ( (1 - (Val2 + Val3)),0)) AS Calc1, FROM `project. Yes, no problem! It seems like you have been quick to catch on to standard SQL as well :) We'll be continuing to improve the documentation as we move. Gets the count of TRUE values for an expression. In the Explorer panel, expand your project and select a dataset. CREATE OR REPLACE TABLE `fh-bigquery. To prevent errors from a division operation, use SAFE_DIVIDE. AVG, COUNT, COUNTIF, LOGICAL_AND, LOGICAL_OR, MAX, MIN, STRING_AGG, SUM. TensorFlow’s BigQueryClient uses the Storage API to efficiently read data directly out of BigQuery storage (i. Let’s assume we have a table named users with columns User_ID and Name. Select the Set a destination table for query results option. 3. We found that bigquery demonstrates a positive version release cadence with at least one new version released in the past 3 months. My approach was to do this operation directly in python just before doing the BigQuery API call, by leveraging python's internal time function (assuming you want your variables to be time-based). In BigQuery, you can use a subquery to define the alias: SELECT Flat, Year, (SUM(CASE WHEN EANR = 'Cancelled' THEN USD_amt END) / SUM(SUM(USD_amt)) OVER (PARTITION BY. ifnull. Enter a valid SQL query. Aggregate functions. We would like the split to work on fields it can work on - and simply yield a NULL value for the second field when it cannot. Gets the count of TRUE values for an. Step-by-step instructions for how to create shapefiles from BigQuery results. To prevent this and avoid getting the “division by zero” error, we can use the SAFE_DIVIDE function or the NULLIF function. . SUM(SAFE_DIVIDE(Val1, 1 - (Val2 + Val3))) AS Calc1 instead of . I'm trying to export a table in BigQuery to multiple CSV files of 10k lines each. SAFE_DIVIDE: Equivalent to the division operator (X / Y), but returns NULL if. To. To translate ad hoc queries, use interactive SQL translation. I have just started working on a time series forecasting project this morning. SAFE_DIVIDE(SUM(view_binary_30) * 1. It is required to calculate for all platforms (iOS / Android / Web). Divides X by Y; this function never fails. This way, the longitude and latitude can be used directly in BigQuery to find the location of a place. SELECT col1 ,col2 ,col3 FROM tbl1 as t1 JOIN t2 ON t1. Queries that use functions and operators that are not on this list might run more slowly. Innovate, optimize and amplify your SaaS applications using Google's data and machine learning solutions such as BigQuery, Looker, Spanner and Vertex AI. Method #1 Check the denominator is not zero during division using NULLIF. This metric can only be calculated by combining 2 existing metrics. This message box provides a link to the quickstart guide and lists UI updates. SAFE_ADD: Equivalent to the addition operator (X + Y), but returns NULL if overflow occurs. 0 / COUNT (*) as null_ratio. For instance, COUNT, SUM, and so on are some examples of the function syntax. Therefore I am using split and compassion techniques to split data while exporting. How to join multiple table without using a key in bigquery. SAFE_DIVIDE. status = 'clicked'), COUNTIF(properties. These translations are able to look up values from variables as per your example:Total revenue for each product category. 継続率は通常 登録日からn日後にユーザーがプロダクトを利用してくれているか を計測する指標です. 2 Answers. Operators such as + and = do not support the SAFE. Go to BigQuery. coords) value1 with offset pos1 join unnest(b. Operators are represented by special characters or keywords; they do not use function call syntax. . It would be perfectly legal for Oracle to evaluate the. Equivalent to the division operator (/), but returns NULL if an error occurs, such as a division by zero error. For a list of unsupported SQL features, see the Unsupported features section. I assume that this happens due to the /sum(iff(iscode=1,1,0)) where this presumably sometimes returns 0. . state = cbs. __TABLES' but that is not allowed within BigQuery. Below is for BigQuery Standard SQL . e. 概要Queryで集計するときによく使うCOUNT関数の小技をご紹介します。. #standardSQL. source AS source, trafficSource. taxi_trips` Below is a screenshot of the schema. Converts a STRING value to a TIME value. For STRING, the default delimiter is a comma. 0 else 0 end) as null_ratio FROM table GROUP BY country_code; If you want to do the count and divide by the total, then use COUNTIF (): SELECT country_code, COUNTIF (store_code IS NULL) * 1. I'm trying to upload a pandas. min))*4, 0) y FROM UNNEST(v) e))); CREATE TEMP. Follow edited May 2, 2019 at 13:11. AVG, COUNT, COUNTIF, LOGICAL_AND, LOGICAL_OR, MAX, MIN, STRING_AGG, SUM. js into your_bucket on GCS 1- Identify & Label Bot Traffic. The quotas and limits for query jobs can be found here. 168, 74. The query yields:. 1. but you DO really need SAFE_DIVIDE. BigQuery - Summing on arrays of structs. In some cases, there's no direct mapping between a SQL element in Hive and BigQuery. During this blog I’ll walk through the process to build this new data bridge. JOBS_BY_PROJECT To answer a question asked here often, this is an approximation as BigQuery unfortunately doesn’t return out the exact. 24. reason I included it initially is - I thought it might give you an idea of introducing some default value for rows where it is division by 0. start_ms)) AS jobstage_max_slots, -- Check if there's a job that requests more units of works (slots). A function syntax is a predefined set of clauses that accomplish a complex action. hours: Number of worked hours by the employee. HELP TO BEAT 'DIVISION BY ZERO' ERROR - ROUND () Syntax. Facebook Ads, Google Ads, Google My Business data, etc. Syntax: CONVERT( data_type [ ( length ) ], expression [, style ] ) The optional "style" argument specifies how the value is going to be converted; this implementation ignores the style parameter. Finally, let’s look at some useful BigQuery math functions. Last time I showed how to use a PostgreSQL instance with PostGIS to fix invalid geometries, now I’m glad to introduce new BigQuery native options that simplify loading geospatial data, including invalid geometries. Session acquisition dimensions can be found here. You can learn more about implicit and explicit conversion here. I have a simple table with two columns Bin_name (int) and Count_in_this_bin (int) I want to convert it to the ratio of each bin to the total count in all bins. Partitioning tables in BigQuery is another way of how to optimize your data storage. I used the following query in Google BigQuery: SELECT count_in_bin/ (SELECT SUM (count_in_bin) FROM [table]) FROM [table] Then I get. This capability selectively masks column level data at query time based on the defined masking rules, user roles and privileges. Hi I'm querying BigQuery data and wanted to change a lot of these NULL values to 0 for calculation. Load jobs are used to ingest data into BigQuery from GCS buckets or local files. Console . To create a saved query, follow these steps: In the Google Cloud console, go to the BigQuery page. 0 model to create a tf. Provide details and share your research! But avoid. There is no current way to split () a value in BigQuery to generate multiple rows from a string, but you could use a regular expression to look for the commas and find the first value. Below is the correct query. That’s what the SAFE_DIV function is for: select SAFE_DIVIDE(10, 0) null Safe multiplication. Final Thoughts. Providing metrics such as pageviews, unique pageviews, average time on page, entrances, exits, etc. In your query you created join with t2 table but t3 and t4 table names are not given in join. 4 by multiplying by 100. To harness its full potential and ensure an… Open in appBigQuery is a cloud based data warehousing tool that lets you store and analyze petabytes of data at lightning speed. state = cbs. К примеру SAFE_DIVIDE(X,Y)=x/y и если y=0, то оператор вернет null. I want to connect two tables with a simple left outer join. 2356 *. An operator manipulates any number of data inputs, also called operands, and returns a result. Use . As I described in an earlier blog post, you can use clustering to understand your data in order to make data-driven decisions. The value 1 refers to the first character (or byte), 2 refers to the second, and so. Extracts part of a TIME value. You can define UDFs as either persistent or temporary. Subtracts a specified time interval from a DATE value. 01 and that this is the reason for providing FLOOR instead of ROUND in the sample code as ROUND (0. The split needs to be consistent and should not change over time: meaning that every time the query is ran, the split should remain the same. Operators, such as + and =, do not support the SAFE. BigQuery’s WITH statement, also known as Common Table Expressions (CTEs), can make your queries more readable and maintainable. ( n * 100) Use CEIL () to round up to the nearest integer. purchases WHERE. You can think of it as “return NULL if. 💡. dep - al19921231. The syntax of NULLIF function: NULLIF (expression1, expression2) if expression1 = expression2 then it will return NULL, otherwise it will return expression1. Sign up for free to join this conversation on GitHub . This is extremely useful in situations where you need to calculate important metrics such as moving averages and cumulative. Introduction to federated queries bookmark_border This page introduces how to use federated queries and provides guidance on querying Cloud Spanner and. Tick history data is an incredible resource for alpha seeking quantitative analysis, data science, and compliance reporting activities. Below are the list of SAFE Functions available in Bigquery. g. These data type conversions are explicit, but some conversions can happen implicitly. You have a choice of using an on-demand pricing model or a capacity-based pricing model. js Python. I'm pretty new to SQL and Google BigQuery, so forgive me if this is a really stupid question. safe_divide(x, y): Safely divides two numeric values, handling nulls and division by zero gracefully. somewhat similar to how the SAFE_CAST command gives a NULL if it cannot do the cast. It returns null if the denominator is zero or either value is null. BigQuery’s WITH statement, also known as Common Table Expressions (CTEs), can make your queries more readable. so, is also found. Click More and then select Query settings. Also if you encounter a divide by 0 error, then try converting the denominator to. TABLE_STORAGE view, the query results contain one row for each table or materialized view for the current project. In this article, we’ll present the functions that BigQuery provides for the use of regular expressions and some useful. AVG, COUNT, COUNTIF, LOGICAL_AND, LOGICAL_OR, MAX, MIN, STRING_AGG, SUM. By dividing a large table into smaller partitions, you can improve query performance and control costs by reducing the number of bytes read by a query. prefix. This topic describes the syntax for. You can think of it as “if NULL, then. The above query will return the percentage of Mike’s for each. The timestamp is continuous, non-ambiguous, has exactly 60 seconds per minute and does not repeat values over the leap second. SELECT Date, purchase_price FROM customer_data. OVER (PARTITION BY stock1, stock2 ORDER BY date ASC)) as logspreadreturn, SAFE_DIVIDE((spreadclose - sma20), stdev20) as zscore20 FROM `rw-algotrader-264713. weekly_capacity/25200, 1) AS TargetDailyHours If I don't solve this I may just have to write all the logic within data studio as the current workflow is Harvest -> Stitch-> Bigquery->data studio . cloud import bigquery bq_client = bigquery. Google Analytics 4 allows exporting all the raw data and events to BigQuery automatically, and use SQL syntax to query and model the data. e. BigQuery Reservation API. population_by_zip_2010` b ON ( a. The digital agency we worked with wanted to A) see their clients’ GA4 data all in one place and B) allow each of their clients to see their GA4 data alongside data from other data sources (e. In this query, the CASE statement returns null when the value in column2 is 0, effectively handling division by zero without returning. I am currently using the following code to convert my query to a list: from google. The first step in this project, as with most data science tasks, was to gather the data first. AVG, COUNT, COUNTIF, LOGICAL_AND, LOGICAL_OR, MAX, MIN, STRING_AGG, SUM. Divide this result by the same figure used in step 1. 3 minutes while uploading directly to Google Cloud Storage takes less than a minute. To make sense of the data and create reports, you have to write your own SQL. This topic lists information about what functions you can use in Spotfire, for example for writing custom expressions and adding calculated columns, when you work with in-database data tables from Google BigQuery. temp. ビッグデータ分析・活用のためのSQLレシピ 4,180. A lot of Google Analytics 4 dimensions and metrics can be derived straight from the tables without performing calculations on the data. 0 would be written as 192. Gets the number of rows in the input, or the number of rows with an expression evaluated to any value other than NULL . To avoid this, you can use SAFE_CAST. BigQuery Window Functions, also known as Analytic Functions, is a set of functions that helps you compute values over a group of rows and return a single result for each row. If the In-page Table Calculations Labs feature is enabled, the table calculation expression editor will open in the Data section of the Explore page. When plotting the interpolated population we now get the intuitive result that population is concentrated in the city center and density decreases further away from the center. AS total_adv, ROUND(SAFE_DIVIDE(high_inc_adv, low. GROUPING. SQL BigQuery - COUNTIF with criteria from current row and partitioned rows. Users are only charged for data from remaining blocks. 6. Result types for Addition, Subtraction and. RANGE_BUCKET scans through a sorted array and returns the 0-based position of the point's upper bound. Also, you're using FLOAT64 which is specific to Bigquery too, you should be using just float. Select Table Calculation to open the Create table calculation pop-up. Planar. t = The sum of bytes for all columns in the table being updated by the DML statement, as they are at the time the query starts. ieee_divide is a bigquery function which is used to divide X by Y and returns the value in float64. weekly_capacity/25200, 1) AS TargetDailyHours If I don't solve this I may just have to write all the logic within data studio as the current workflow is Harvest -> Stitch-> Bigquery->data studio BigQuery Storage Write API: This is the cost of using storage write API in BigQuery. An operator manipulates any number of data inputs, also called operands, and returns a result. ) How do we do a "safe" SPLIT on fields in Google BigQuery? Оператор SAFE_DIVIDE позволяет игнорировать деление на 0. For non-partitioned tables, the number of bytes processed is calculated as follows: q = The sum of bytes processed by the DML statement itself, including any columns referenced in tables scanned by the DML statement. 204 with a network mask of 255. FROM `bigquery-public-data. In essence, they are evaluated left to right, with short-circuiting, and only evaluate the output value that was chosen. This example calculates the number of impressions that were both full-screened and backgrounded at some point during the view. NOTE: Divide by zero operations return an error. During the query execution, BigQuery automatically calculates how many slots a query requires, depending on the query size and complexity. num, 0). 継続率をQueryで集計するメリット. You can use this function to handle a potential division by zero by wrapping the denominator in a call to NULLIF. Finding the last day of a. min))*4, 0) y FROM UNNEST(v) e))); CREATE TEMP FUNCTION vbar(v ARRAY<FLOAT64>) AS ( barchart(v, (SELECT. さまざまな数学的な計算処理に使われることがある。. This topic lists information about what functions you can use in Spotfire, for example for writing custom expressions and adding calculated columns, when you work with in-database data tables from Google BigQuery. function or the. With flat-rate pricing, you can purchase BigQuery slot commitments in 100-slot increments in. We found that bigquery demonstrated a healthy version release cadence and project activity. 12. Description. Google Bigquery: How do I divide 2 values in the same column? 3. When using CAST, a query can fail if GoogleSQL is unable to perform the cast. I would like to update my FTE_YTD Calculation to be a cumulative sum of previous month/s based on CALENDAR_MONTH. Than you run something like below - depends on how many tables you want to split to - as many times as needed. I would like to have a reusable insert function for BigQuery that leverages the PEP 249 dbapi implementation provided by the BQ library (google. In our example, CEIL ( n) = 1824. BigQuery producing negative (!) zero when. if current_date is 19 April 2022 then current_date ()-10 is 9 April 2022. I previously was using a CASE WHEN function but wanted to change it to an IF as there is only one case. However, using CAST may cause a query to fail if BigQuery is unable to perform the conversion. BigQuery Storage Write API: This is the cost of using storage write API in BigQuery. 2. Try this: We would like the split to work on fields it can work on - and simply yield a NULL value for the second field when it cannot. You given an example of fixed dates, which are compared to the current date. AVG, COUNT, COUNTIF, LOGICAL_AND, LOGICAL_OR, MAX, MIN, STRING_AGG, SUM. prefix. 2. Add a comment | Your Answer Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. The behavior of IEEE_DIVIDE is further illustrated in the table below. 4. I am trying to get a benchmark dataset in BigQuery. For example, using the 2M row public table bigquery-public-data. And there is no such function SAFE in Spark. In this dataset I'd like to get data like sessions, bouncerates, new users but most importantly, conversion rates. Improve this answer. but in my case I need to distinct the values (on 2 different columns) the value - number grouped values based on. These quotas and limits apply to query jobs created automatically by running interactive queries, scheduled queries, and jobs submitted by using the. To prevent errors from casting, use SAFE_CAST. You don't need to provision storage resources or reserve units of storage. dataset. In this example, the network prefix of the IP address 192. AS type FROM ( SELECT SPLIT (source_string, ',') split_col FROM (SELECT "item1-name1-type1-value1, item2-name2-type2-value2" source_string) ) result: Row name type 1 name1 type1 2 name2 type2. 全体の継続率を計測して指標として追うことも大事です(アプリDL時のウォーク. Go to the BigQuery page. Part of Google Cloud Collective. 1. Depending on why you are dividing, sometimes yielding an infinity rather than exploding is perfectly reasonable. The problem is that to_gbq() takes 2. #8 The power of. Basically the prefix SAFE_ can be added to other BigQuery functions to handle errors. Follow asked Feb 3 at 8:57. MySQL will anyway give NULL if you try to do 0/0, as the SQL meaning fo NULL is "no data", or in this case "I don't. In Legacy I used to have x/y returning null if y=0, however, I'm stuck in StandardSQL with the error: Error: division by zero I'd lik. 1.