When specified, the partitions that match the partition spec are returned. Syntax of NULLS FIRST clause along with ORDER BY ascending: Syntax of NULLS LAST clause along with ORDER BY descending: LIMIT clause is optional with the ORDER BY clause. "select where " only processes the 500 partitions! The output is order alphabetically by default. WHERE GROUP BY HAVING ORDER BY LIMIT ; You may also specify ORDER BY 1 or ORDER BY 2 where 1 and 2 represent the column number instead of using ORDER BY . PARTITION clause An optional parameter that specifies a partition. location attribute shows the location of the partition file on HDFS. table, which contains sample web browsing data. Is it correct to use "the" before "materials used in making buildings are"? The ORDER and PARTITION define what is referred to as the "window"the ordered subset of data over which calculations are made. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Preparing Sample Data if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[300,250],'sparkbyexamples_com-large-leaderboard-2','ezslot_12',114,'0','0'])};__ez_fad_position('div-gpt-ad-sparkbyexamples_com-large-leaderboard-2-0'); Running SHOW TABLE EXTENDED on table and partition results in the below output. -- Lists all partitions for table `customer`, -- Lists all partitions for the qualified table `customer`, -- Specify a full partition spec to list specific partition, -- Specify a partial partition spec to list the specific partitions, -- Specify a partial spec to list specific partition, PySpark Usage Guide for Pandas with Apache Arrow. lets call our table name LOG_TABLE with the partition on LOG_DATE column. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. By default, the sorting order will be ascending, which shows the smallest value in the beginning and the largest value at the end of the result, even if you do not specify it explicitly. You can also specify NULLS FIRST, and NULLS LAST and ORDER BY ASC or with ORDER BY DESC according to your requirements convenience. What's the difference between a power rail and a signal line? I will be using State as a partition column. Los crditos a largo plazo se llaman simplemente prestamos personales por internet creditos online urgentes por firmas. The estimate is 2 rows. Multiple API calls may be issued in order to retrieve the entire data set of results. Alternatively, you can also rename the partition directory on the HDFS. Syntax: PARTITION ( partition_col_name [ = partition_col_val ] [ , . Please refer to your browser's Help pages for instructions. -R: Recursively list subdirectories encountered. Hive 4.0added where, order by and limit optional clauses. We can specify the PARTITION By clause to divide data into multiple sets. Javascript is disabled or is unavailable in your browser. Manage Settings Cock-A-Doodle-Doo! This is a guide to Hive Order By. 1 H U N T E R : T H E R E C KO N I N G. Written by Justin Achilli, Daniel Braga, Johnathan Byerly, Edward Austin Hall, Karim Muammar, Mario Ortegn, Pam Punzalan, and Erin Roberts Advice for Considerate Play appendix by Jacqueline Bryk Editing and Indexing by Ronni Radner Concept Diversity Consultancy and Diversity Reading by Maple Intersectionality Consulting Art Director . partitions in the actual file system. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, PARTITION BY is same/equivalent as GROUP BY . If you skip the PARTITION BY clause, the FIRST_VALUE () function will treat the whole result set as a single partition. However, I am getting rank 1 for all three dept. Learn more about Stack Overflow the company, and our products. ]table_name [PARTITION (partition_spec)]; Where: [db_name. This command lists all the partitions for a table. Keep us posted if you solve it or find source of it. In this article you will learn what is Hive partition, why do we need partitions, its advantages, and finally how to create a partition table and performing some partition operations like add, rename, update, and delete partitions.if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[728,90],'sparkbyexamples_com-box-3','ezslot_5',105,'0','0'])};__ez_fad_position('div-gpt-ad-sparkbyexamples_com-box-3-0'); Hive table partition is a way to split a large table into smaller logical tables based on one or more partition keys. What does this means in this context? If you want to display all the Partitions of a HIVE table you can do that using SHOW PARTITIONS command. To reorder the column in ascending order we will be using Sorted function. About an argument in Famine, Affluence and Morality. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Listing partitions for a sort by - sorted data per reducer not globally sorted. . To learn more, see our tips on writing great answers. Did any DOS compatibility layers exist for any UNIX-like systems before DOS started to become outmoded? Usingorder byyou can display the Hive partitions in asc or desc order. Specifies a table name, which may be optionally qualified with a database name. I suggest to export output into local file: Okay, I'm writing this answer by extending wmky's answer above & also, assuming that you've configured mysql for your metastore instead of derby. . La mayora de prestamistas pedir prestamo online prefieren prestamos express en linea a corto plazo. Lets create a table and Load the CSV file.if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[468,60],'sparkbyexamples_com-box-4','ezslot_11',139,'0','0'])};__ez_fad_position('div-gpt-ad-sparkbyexamples_com-box-4-0'); The data file that I am using to explain partitions can be downloaded from GitHub, Its a simplified zipcodes codes where I have RecordNumber, Country, City, Zipcode, and State columns. Alternatively, if you know the Hive store location on the HDFS for your table, you can run the HDFS command to check the partitions. Hive What is Metastore and Data Warehouse Location? sparkMySQLshtd_storeuser_infosku_infobase_provincebase_regionorder_infoorder . When you are sorting by date in the descending order, it seems instead of the previous value you need the next value. ]: Is an optional clause. Thanks for contributing an answer to Stack Overflow! . Department of Transportation. Does a barbarian benefit from the fast movement ability while wearing medium armor? Below are some of the advantages using Hive partition tables. partition spec may be specified to return the partitions matching the supplied I have a table, and for a given set of fields a, b and c, I need to get the first and last rows ordered by d and e, and am using ROW_NUMBER to get these rows. -u: Use access time rather than modification time for display and sorting. LIMIT clause can be used to improve the performance. ASC: The sort direction for this expression is ascending. DESC: The sort order for this expression is descending. ALL RIGHTS RESERVED. Description In Hive it may well happen that a partition value is written by the writer process as a string, e.g. No idea then. See also: AWS API Documentation get-partitions is a paginated operation. The region and polygon don't match. Staging Ground Beta 1 Recap, and Reviewers needed for Beta 2, Hive nested SUM over partition - error Expression not in GROUP BY key, Styling contours by colour and by line thickness in QGIS. Practice Problem . Is there a proper earth ground point in this switch box? So today we are going to understand the below topics. Like SQL, HiveQL also provides the ORDER BY clause which can be used with the SELECT clause. To use the Amazon Web Services Documentation, Javascript must be enabled. This article will cover the SQL PARTITION BY clause and, in particular, the difference with GROUP BY in a select statement. Why Hive Table is loading with NULL values? Gostara de compartilhar abaixo o resultado de um interessante levantamento em tempo real que a relevncia de pesquisas dos temas Social Networks e Redes Sociais ao longo do tempo no Google. pyspark order by multiple columns how to find assumed mean of ungrouped data. Enables Hive support, including connectivity to a persistent Hive metastore, support for Hive serdes, and Hive user-defined functions. How to tell which packages are held back due to phased updates. files. ORDER BY can be combined with other clauses to get the sorted data. page. We're sorry we let you down. Both sort() and orderBy() functions can be used to sort Spark DataFrames on at least one column and any desired order, namely ascending or descending.. sort() is more efficient compared to orderBy() because the data is sorted on each partition individually and this is why the order in the output data is not guaranteed. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. When you manually modify the partitions directly on HDFS, you need to run MSCK REPAIR TABLE to update the Hive Metastore. How to react to a students panic attack in an oral exam? Database Administrators Stack Exchange is a question and answer site for database professionals who wish to improve their database skills and learn from others in the community. SHOW PARTITIONS table_name [PARTITION(partition_spec)] [LIMIT rows]; Using where clause you can fetch specific partition information from the Hive table. Continue with Recommended Cookies. nulls_sort_order. Each HiveQL will be converted to a MapReduce job in the backend. Using partition it is easy to do queries on slices of the data. For more information about the example Apache hive - How to limit partitions in show command. In our example, we rank rows within a partition. Order by clause use columns on Hive tables for sorting particular column values mentioned with Order by. If you need additional columns returned, simply add them to the queries in the appropriate places and ensure they are included in the index. Hive Partition files on HDFS Add New Partition to the Hive Table In order to fix this, you need to run MSCK REPAIR TABLE as shown below. The default ordering is asc. Is it suspicious or odd to stand by the gate of a GA airport watching the planes? To use partitions, you define the set of partitioning column when you create a table by including the PARTITIONED BY clause. Thanks Eric Reply 8,052 Views 0 Kudos VijayM Explorer Created on 09-12-2019 05:42 AM - edited 09-12-2019 05:43 AM @EricL , Thank You for the reply. The difference between "order by" and "sort by" is that the former guarantees total order in the output while the latter only guarantees ordering of the rows within a reducer. HiveQL - SORT BY Clause The HiveQL SORT BY clause is an alternative of ORDER BY clause. Is it possible to rotate a window 90 degrees if it has the same length and width? Show Table Properties. table_clauses Optionally specify location, partitioning, clustering, options, comments, and user defined properties for the new table. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. SHOW PARTITIONS lists the partitions in metadata, not the Then, The ORDER BY specifies the order of rows in each partition. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The Spark DataFrame that originally has 1000 partitions, will be repartitioned to 100 partitions without shuffling. These sort operations make up over 60% of the total cost of the statement (we're talking tens of millions of rows here, the partitions will usually have 1-100 records per partition, mostly under 10), so it would be good if I could get rid of one of them. Is it suspicious or odd to stand by the gate of a GA airport watching the planes? For more information, see the Listing partitions for a What Is the Difference Between 'Man' And 'Son of Man' in Num 23:19? Hive Temporary Table Usage And How to Create? . Making statements based on opinion; back them up with references or personal experience. LIMIT clause will select only the limited number of values from the result for the verification purpose. In order to Rearrange or reorder the column in pyspark we will be using select function. Dropping a partition can also be performed using ALTER TABLE tablename DROP. We use SQL PARTITION BY to divide the result set into partitions and perform computation on each subset of partitioned data. , . Asking for help, clarification, or responding to other answers. On the other hand, orderBy() collects all the data into a . SSRS doesn't provide any next function unlike Crystal. To view the contents of a partition, see the Query the data section on the Partitioning data in Athena page. To learn more, see our tips on writing great answers. Syntax SHOW PARTITIONS table_identifier [ partition_spec ] Parameters table_identifier Specifies a table name, which may be optionally qualified with a database name. CORE RULEBOOK. By Descending order we mean that column will the highest value will come at first followed by the one with 2nd Highest to lowest. : month=02, even though the column is registered in Hive as an integer. Lists all the partitions in an Athena table in unsorted order. Connect and share knowledge within a single location that is structured and easy to search. how to divide data into deciles in excel; rise institute fee structure; penns valley school district jobs; psychiatrist fort worth; spanish immersion school walnut creek; rialto high school calendar; Use the following commands to show partitions in Hive: CLI has some limit when ouput is displayed. This is the reason shuffle phase is necessary for the reducers. Similarly, the sorting order of NULL values for ORDER BY DESC is NULLS LAST by default. Thanks for letting us know this page needs work. the ultimate cartoon crush tier list boy edition. I am trying to understand how to use the rank() over(partition by ) in Apache Hive, but have problems getting the results I desire. if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[300,250],'sparkbyexamples_com-box-2','ezslot_7',132,'0','0'])};__ez_fad_position('div-gpt-ad-sparkbyexamples_com-box-2-0');Hive partitions are used to split the larger table into several smaller parts based on one or multiple columns (partition key, for example, date, state e.t.c). We are creating 4 buckets overhere. Hive Relational | Arithmetic | Logical Operators. Hive is built on top of the Hadoop Distributed File System (HDFS) to write, read, querying, and manage large structured or semi-structured data in distributed storage systems such as HDFS. 80, Jubilee Hills, Hyderabad-500033 router bridge mode explained + 91 40 2363 6000 how to change kindle book cover info@vspl.in If you've got a moment, please tell us what we did right so we can do more of it. Terms of service Privacy policy Editorial independence. Approaches. LIMIT clause with ORDER By clause can be shown as below: ORDER BY clause can also be combined with the OFFSET clause and LIMIT clause to reduce the results quantity. Here is the JDBC program to apply Order By clause for the given example. So when we insert data into this table, each partition will have its separate folder. For each partition on the table, you will see a folder created with the partition column name and the partition value. How do I align things in the following tabular environment? Configuration Properties - Apache Hive - Apache Software Web2. Is there a single-word adjective for "having exceptionally strong moral principles"? An optional parameter that specifies a comma separated list of key and value pairs I'm going to fetch the values of partition columns. Do I need a thermal expansion tank if I already have a pressure tank? Your HQL query will give the same result if dept_num is same . sql. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. An alternative, possibly better if there are a small number of rows per group on average: (improved based on a suggestion by Martin Smith). Thanks for contributing an answer to Stack Overflow! No partition elimination for partition column values in a lookup table? Retrieves information about the partitions in a table. Norm of an integral operator involving linear and exponential terms. SHOW PARTITIONS table_name [ PARTITION clause ] Parameters table_name Identifies the table. ORDER BY function is used to sort data either in ascending or descending order on columns specified by the user. flight_delays_csv table, see LazySimpleSerDe for CSV, TSV, and custom-delimited In this example, we omitted the PARTITION BY clause so the whole result set was treated as a single partition.. Bem vindo ao meu website pessoal. We also rearrange the column by position. Hive cli: hive> create table test_table_with_partitions (f1 string, f2 int) partitioned by (dt string); OK Time taken: 0.127 seconds hive> alter table test_table_with_partitions add partition (dt=20210504) partition (dt=20210505); OK Time taken: 0.152 seconds Python cli: Syntax: The syntax for PYSPARK ORDERBY Descending function is: from pyspark. Optionally specifies whether NULL values are returned . Learn how your comment data is processed. flight_delays_csv table, which shows flight table data from the US Also, note that while loading the data into the partition table, Hive eliminates the partition key from the actual loaded file on HDFS as it is redundant information and could be get from the partition folder name, will see this with examples in the next sessions.if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[300,250],'sparkbyexamples_com-medrectangle-4','ezslot_6',109,'0','0'])};__ez_fad_position('div-gpt-ad-sparkbyexamples_com-medrectangle-4-0'); As you are aware Hive is a data warehouse database for the Hadoop and used to store large big data sets. . The following command will list all the partitions present in the, The following command will list a specific partition of the. From the above screen shot. functions import desc b.orderBy(desc("col_Name")).show() ScreenShot: desc: The Descending Function to be Imported. The following command is used to create data partitioning in Hive: CREATE TABLE table_name (column1 data_type, column2 data_type) PARTITIONED BY (partition1 data_type, partition2 data_type,. If you preorder a special airline meal (e.g. Como resultado da tese de mestrado que defendi o trabalho cujo tema foi Anlise das Redes Sociais com Foco no Crescimento Profissional das Pessoas: Um Estudo de Caso. 2022 - EDUCBA. -r: Reverse the sort order. Hive Create Table Syntax & Usage with Examples, https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DDL, Hive DDL Commands Explained with Examples, Hive INSERT INTO vs INSERT OVERWRITE Explained, How to replace NULL values with Default in Hive. Therefore, it is way more efficient to call coalesce()when one wants to reduce the number of partitions of a Spark DataFrame. If you've got a moment, please tell us how we can make the documentation better. . Hive Difference Between Internal Tables vs External Tables? Below are some of the additional partition commands that are useful. The output is order alphabetically by default. Filter, Sort and Browse Hive Partitions with Hue's Metastore from The Hue Team on Youtube. 359 , Road No. Show Partitions. ]table_name [PARTITION (partition_spec)]; Where: [db_name. Using limit clause you can limit the number of partitions you need to fetch. Syntax of the same can be shown as. Get Mark Richardss Software Architecture Patterns ebook to better understand how to design componentsand how they should interact. It orders the data within each reducer. You want to show one result row per topic, so select from the topics table. SELECT , FROM
ORDER BY ; ORDER BY clause along with all other Clauses: SELECT DISTINCT , , FROM
WHERE GROUP BY HAVING ORDER BY LIMIT ; You may also specify ORDER BY 1 or ORDER BY 2 where 1 and 2 represent the column number instead of using ORDER BY . [PARTITION (partition_spec)]: Is an optional clause. Why is this the most voted answer when, as the comments show, it still shows only 500 partitions? Each table in the hive can have one or more partition keys to identify a particular partition. select * from ( select user_id, value, desc, rank() over ( partition by user_id order by value desc) as rank from test4 ) t where rank 3; The output looks like this: To show the partitions in a table and list them in a specific order, see . An optional Both Spark distinct and dropDuplicates function helps in removing duplicate records. How to start HiveServer2 and using Beeline Difference between Internal Managed Table and External Table "show partitions ods.lineitem" . import java.sql.SQLException; import java.sql.Connection; import java.sql.ResultSet; import java.sql.Statement; import java.sql.DriverManager; public class HiveQLOrderBy { private static String driverName = "org.apache.hadoop.hive.jdbc.HiveDriver"; public static void main . impressions table, see Partitioning data in Athena. ORDER BY clause One additional advantage with dropDuplicates () is that you can specify the columns to be used in deduplication logic. The syntax of show partition is pretty straight forward and it works on both internal or external Hive Tables. Once created, queries can potentially benefit from indexes many times. SPARK Distinct Function. This UDF approach performs MUCH MUCH better. Is a PhD visitor considered as a visiting scholar? document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); SparkByExamples.com is a Big Data and Spark examples community page, all examples are simple and easy to understand, and well tested in our development environment, | { One stop for all Spark Examples }, Broadcast meaning | Broadcast in a Sentence | Most common words in English #shorts, Difference Between Managed vs External Tables, How to Create Temporary Table with Examples. In this recipe, you will learn how to list all the partitions in Hive. (datetime) column. All the way at the bottom of the post is the dataset that I am working with. A command such as SHOW PARTITIONS could then synthesize virtual partition descriptors on the fly. Logically it doesn't matter if you order ascending or descending, and if the optimiser understood this then it could just read the same index backwards to work out row_number_end. . Maybe it's a datastax's externsion to Hive. It resets the rank when the partition boundary is crossed. This option is only helpful if you have all your partitions of the table are at the same location.if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[336,280],'sparkbyexamples_com-banner-1','ezslot_17',113,'0','0'])};__ez_fad_position('div-gpt-ad-sparkbyexamples_com-banner-1-0'); These yields similar to the below output. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Ive used partition key as sate and loaded some data into the table.if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[580,400],'sparkbyexamples_com-medrectangle-4','ezslot_5',109,'0','0'])};__ez_fad_position('div-gpt-ad-sparkbyexamples_com-medrectangle-4-0'); Now lets run show partitions and see what it gets us. files. Hive Partitioning vs Bucketing with Examples? From inspecting the execution plan, I believe the problem is that when doing a partition by statement, SQL Server insists on ordering by the partitioning columns on an ascending basis. The nature of simulating nature: A Q&A with IBM Quantum researcher Dr. Jamie We've added a "Necessary cookies only" option to the cookie consent popup, ROW_NUMBER() OVER (PARTITION BY B,A ORDER BY C) doesn't use index on (A,B,C), SHOWPLAN does not display a warning but "Include Execution Plan" does for the same query, Optimize delete query in SQL Server 2008 R2 SP1, T-SQL performance tuning - Query running slower. , , , , , . View all OReilly videos, Superstream events, and Meet the Expert sessions on your home TV. These sort operations make up over 60% of the total cost of the statement (we're talking tens of millions of rows here, the partitions will usually have 1-100 records per partition, mostly under 10) so it would be good if I could get rid of one of them. Syntax: PARTITION ( partition_col_name = partition_col_val [ , ] ). for partitions. Spark Dataframe drop rows with NULL values, How To Replace Null Values in Spark Dataframe, How to Create Empty Dataframe in Spark Scala, Hive/Spark Find External Tables in hive from a List of tables, Spark Read multiline (multiple line) CSV file with Scala, How to drop columns in dataframe using Spark scala, correct column order during insert into Spark Dataframe, Spark Function to check Duplicates in Dataframe, Spark UDF to Check Count of Nulls in each column, Different ways of creating delta table in Databricks, show partitions using where orderby & limit clause. When can SARGable predicates be pushed into a CTE or derived table? 24/7. Querying AWS Glue Data Catalog page. The below are the list of SHOW options available to trigger on Metastore. "Show partitions" command only lists a small number of partitions. What is the correct way to screw wall and ceiling drywalls? If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. SHOW PARTITIONS table_name [PARTITION(partition_spec)] [WHERE where_condition] [ORDER BY column_list] [LIMIT rows]; So today we learnt how to show partitions in Hive Table. Please also run below query in Impala, as it will show the partition location: show partitions db1.t1; Finally, output of "SHOW CREATE TABLE db1.t1" so that I can see the table definition. The following example query shows the partitions for the impressions Specify list for multiple sort orders. By signing up, you agree to our Terms of Use and Privacy Policy. The RANK() function then is applied to each row in the result considering the order of employees by salary in descending order.. More specifically, you can't include window functions in a GROUP BY clause. Problem solved by "set cassandra.connection.sliceSize=10000;". THE CERTIFICATION NAMES ARE THE TRADEMARKS OF THEIR RESPECTIVE OWNERS. Making statements based on opinion; back them up with references or personal experience. PARTITION. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Below explanation shows that how can we use order by function in a hive: SELECT , FROM
ORDER BY ASC; SELECT , FROM
ORDER BY DESC; SELECT , FROM
ORDER BY ASC DESC; SELECT , FROM
ORDER BY ASC NULLS LAST; SELECT , FROM
ORDER BY DESC NULLS FIRST; SELECT , FROM
ORDER BY ASC LIMIT 10; SELECT , FROM
ORDER BY ASC LIMIT 10 OFFSET 10; Consider the following sample table Employee which contains Employee Id as EmpID, Employee name as EmpName, Designation, Department as Dept, Job Level as JL, and Salary. The output includes the names of the files, the size of each file, and the applicable partition for a partitioned table. Answer: order by- ascending or descending sorting of data globally in one reducer. Note: JOIN table DBS ON DB_ID when there is a DB involved (i.e, when, multiple DB's have same table_name). SHOW PARTITIONS table_name [PARTITION(partition_spec)] [ORDER BY col_list] ; Note: You can also use all the clauses in one query in Hive. Finally, you can view the data files in any partition by clicking the "View Partition Files" link which will take you to the filebrowser for that partition's location. This by default returns a Series, if level specified, it returns a DataFrame. Ive a table zipcodes with column names RecordNumber, City, Zipcode and State. One possible approach mentioned in HIVE-1079 is to infer view partitions automatically based on the partitions of the underlying tables. Here we discuss How we can use order by function in a hive, and different examples with codes and outputs. hong kong orchid tree for sale near me; claiming benefits when separated but living together; fun . rev2023.3.3.43278. 0 ? Does Counterspell prevent from any further spells being cast on a given turn? Show Tables/Partitions/Indexes. Above command synchronize zipcodes table on Hive Metastore. Connect and share knowledge within a single location that is structured and easy to search. Start your Hive beeline or Hive terminal and create the managed table as below.if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[250,250],'sparkbyexamples_com-banner-1','ezslot_9',113,'0','0'])};__ez_fad_position('div-gpt-ad-sparkbyexamples_com-banner-1-0'); Download the zipcodes.CSV from GitHub, upload it to HDFS, and finally load the CSV file into a partition table. SQL Server - Select most recent record from each group when performance is critical.