Multiple with clause in hive. (some more LIKE statements) I tried doing the above as well as. Hive supports ANSI SQL and atomic transactions, consistent, insulated and durable (ACID). Does it return one of the following: A or B or C or D. Hence sort by could lead to total order if there is only one reducer & partial ordering if there are multiple reducer-. Where clause with AND and OR Operators. In your CASE the result of logical expression is unknown, so ELSE value is assigned. In this article, we will explain how to define multiple CTEs in a single query. The aim is to store these columns in an table in hbase which has the columns news, social and all. Jan 28, 2018 · 2. $ {hiveconf:variable} >= 5 1. Instead, that wants to go into a where Explore the syntax and various types of SELECT queries in Apache Hive with this comprehensive guide. some_col LIKE '%pqr%' OR. Does anyone know an equivalent solution that 9. For this example, we will take the patient_details table in Hive. tsv file from Hbase into hive. FROM y ) tmp; hadoop. The metasore query of the first use-case will most likely be faster than the second use-case but in any case we are talking here on fractions of a second. WHERE some_col LIKE '%abc|pqr|xyz%' . I have the following conditional statement i am trying to convert into hive. May 7, 2024 · 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. Apr 16, 2014 · 14. It will depend on your Hive version how optimize it is. c1, t2. One of the most effective strategies for improving the performance of Hive queries is partitioning. t. id FROM table1) AND. count) in the select statement as well. Nov 10, 2015 · What would be the right way to write a Hive query with multiple LIKE operators like this: SELECT * . In my current version (1. . You can also see the related ticket here. from. In ANSI SQL, there is an operator called is distinct from. DENSE_RANK () : Assigns a rank to each row within a partition, with no gaps in rank values in case of ties. We can filter out the data by using where clause in the select query. When using group by clause, the select statement can only include columns included in the group by clause. dynamic. WHEN (condition2) THEN result2. If we want to see employees having salary greater than 50000 OR employees from department ‘BIGDATA’, then we can add a where clause in the select query and the result will get modified accordingly. A Common Table Expression (CTE) is a temporary result set derived from a simple query specified in a WITH clause, which immediately precedes a SELECT or INSERT keyword. `select distinct t1. [RecTime],INC. WHERE tab2. Cluster BY columns will go to the multiple reducers. Introduction. ALL and DISTINCT Clauses. I can use month() and year() on this co May 25, 2016 · When you group by course and dept, you would get multiple values (comming for different records) for status column, this needs to be handled. SELECT *. Presumably you intend with collect_set() or collect_list(). berry rlike '^(A10)|(B10)'. 13 some types of subqueries are supported in the WHERE clause. date) between -5 and 5. Return everything that starts with ‘a”abc’ LIKE Mar 17, 2016 · Select Query With a Where Clause. It fails, saying invalid column reference 'c': (possible column names are: a, b, c). 0 when multiple macros were used while processing the same row, an ORDER BY clause could give wrong results. An Alternative to this can be: where rel. text_value STRING, roman_value STRING) FROM v_text JOIN v_roman. date, t2. Order by used when total ordering is required while sort by is used when there are multiple reducer & input to reducer required to be in sorted order. 0 or higher, then you can simply do Example of Having Clause in Hive. Mar 22, 2017 · I need to concat string values row wise with '~' as delimiter. Yes you can WITH SET1 AS (SELECT SYSDATE FROM DUAL), -- SET1 initialised. Hive Query to insert a value conditionally. Example: Specifying data storage and compression formats. on. g: #StandardSQL. 3. LIKE and IN can't do what you want: LIKE operates on scalar operands, while IN does not do pattern matching. Then it is mandatory that the same column should be used in the join clause. I ran a insert overwrite on a partitioned table. 358. t1. 0. salary > 50000 and s. Tune proper mapper and reducer parallelism for the same. ( SELECT INC. Just for example: With DependencedIncidents AS. (SELECT b. Also AND, OR, NOT operator can be combined with WHERE clause to impose multiple conditions. 2 Installation on Linux Guide Dec 1, 2017 · I found that Hive supports window clause, but for several weeks I couldn’t figure out how to define multiple window clauses in the same query. Apr 24, 2013 · I'm trying to append one variable from several tables together (aka row-bind, concatenate) to make one longer table with a single column in Hive. Based on your desired result, you need to join all your tables on col1. Dec 6, 2017 · 1. if [my_time] > [your_time] then [my_time] elseif isNull ([your_time]) then [my_time] else null() endif. The SQL WITH clause allows you to give a sub-query block a name (a process also called sub-query refactoring), which can be referenced in several places within the main SQL query. ON s. Apr 18, 2021 · If hive. Dec 22, 2014 · See this for where clause in hive https: Hive multiple subqueries in WHERE predicate workaround. WHEN (condition3) THEN result3. I tried HAVING. val. a = B. where rowid > 0 and rowid <=20; Using Between operator to specify range. WHEN (condition1) THEN result1. c2. Feb 26, 2020 · You may just want to move the logic to the on clause: from t1 full outer join. code NOT IN (SELECT table2. storage=true; SET hive. I am working on a hive (1. typecheck. answered May 27, 2020 at 11:36. datediff(t1. Sep 15, 2015 · In the above query, hive finds where A. Data management is a significant aspect of working with big data, and Apache Hive is one of the most powerful tools in this domain. EDIT: If the above doesn't work, then perhaps you can rewrite the query as a union all: Feb 27, 2019 · As of Hive 0. SET2 AS (SELECT * FROM SET1) -- SET1 accessed. max_month_cd IS null then 0 else 1 end test_2. Example: Creating an empty copy of an existing table. create table mydb. The WHERE clause in SELECT statement is used to fetch data from a HIVE table based on a particular condition. e. i_mod_yr in (select * from my_prtitn) and rtrim (substr (rel. WHERE RANK() OVER (PARTITION BY a,b ORDER BY c DESC) = 1. Mar 24, 2016 · hive query with multiple where IN clause with AND type logical connection 7 Hive subquery in where clause (Select * from table 1 where dt > (Select max(dt) from table2) ). After the command, say for example the below partitions are created. Subqueries in HIVE. key2 = t2. code FROM table2); If you are limited to one subquery, this gets tricky. It ensures sorting orders of values present in multiple reducers. Apr 22, 2019 · 1. CREATE TABLE t1(a INTEGER, b INTGER); Sep 17, 2012 · FROM a. I have the following data: I need to concat 'Comment' column for each 'id' in the ascending order of 'row_id' with '~' as delimiter. Therefore if your hive is of 3. Example: Creating unpartitioned tables. When you run a hiveql command and have a where clause with 'and' and 'or' in it how does it distribute the conditions? For example Say I have the following query: where A and B or C and D. select * from A JOIN B where A. Make sure we have these two properties set to: SET hive. Here is a quick demonstration. SELECT. desc,max(c) from(. exec. Feb 21, 2017 · From the Subqueries in the WHERE Clause section of the HIVE Language Manual: Hive with multiple subqueries. What would be an efficient SQL request to concatenate them into a single table with the same structure? Update, this works quite fast in my case: CREATE TABLE xy AS SELECT * FROM ( SELECT *. FROM x. It turned out, like many programming headaches, that the comma was messing with me — you only need to know where to put it. partition_test. Mar 22, 2023 · Now let us restrict the result of the group by using having clause. group by id,c,date,desc; But output is not as expected. Col1 = t. Now I want to count each type as type_count with some restriction and make a divisio Sep 29, 2022 · Learn how to use the powerful WITH clause! In SQL, there are simple queries and complex queries. 0 onward). KEY) As of Hive 0. The joining condition can be on the common columns between participating tables. DROP TABLE IF EXISTS testdb. Some columns contain extra ^ delimiter at the end, remove it before splitting. For example, Cluster By clause mentioned on the Id column name of the table employees_guru table. ppd=true; SET hive. So, you can do: SELECT SUM(CASE WHEN utmsource IS NULL THEN 1 ELSE 0 END) as amountnull. COUNT(DISTINCT col3) > 1. 13 and up. KEY FROM B); can be rewritten to: SELECT a. Of course, you can have as many aggregation functions (e. Dec 8, 2016 · I guess this is a limitation of HIVE it can select only a single column for IN subqueries. SELECT * FROM SET2; -- SET2 projected. It's giving all the desc per day per id instead of giving only most frequently appearing desc per day per id. Feb 7, 2023 · Hive partition is a way to organize a large table into several smaller tables based on one or multiple columns (partition key, for example, date, state e. There are two possible issues. key = b. To ensure that you always have a value in col1, you need to coalesce them together (coalesce gives you the first non-null value). [SQL] AS [str] FROM. HIVE. Say for example, after the 2nd insert, below partitions get created. berry like 'B10%') Another option is to use a regex - this is shorter to type when the list of values gets longer: and a. ppd. ELSE result_default. ( SELECT A. One another way to achieve this would be to use the row_number function and joining the records as shown below. Sub queries in the WHERE clause are only supported from Hive 0. Left Joins. There is no need to read the same data many times in separate queries to achieve better parallelism. May 6, 2015 · The WITH clause is for subquery factoring, also known as common table expressions or CTEs: The WITH query_name clause lets you assign a name to a subquery block. Sep 2, 2016 · insert into foo select code, description, salary from sample_07 s where s. 1. The clause is used for defining a temporary relation such that the output of this May 1, 2018 · You can use Row_Number window function and set the range limit. partition=true; SET hive. The solution is to use single lateral view posexplode, split other columns to get arrays, then use position to address other values. Multiple insert clauses (also known as Multi Table Insert) can be specified in the same query. berry like 'A10%' or a. substitute OVERWRITE DIRECTORY '/'tmp/or_employees in above image with INTO TABLE us_employees. CROSS JOIN [Incident] AS X. b. NewTable AS. key1) JOIN c ON (c. t3. key2 and. value, t1. timeOnSite, 0) AS time_on_site. val FROM a JOIN b ON (a. 1. SELECT WHERE Statement. timestamp as prev_timestamp, t1. View solution in original post. timestamp, t0. For understanding Join Concepts in clear here we are creating two tables overhere, Feb 15, 2024 · Its ease-of-use and similarity to SQL, known as Hive Query Language (HQL), make it popular among data engineers. val, c. If you try. Apache Hive will dynamically choose the values from select clause columns that you specify in partition clause. HQL simplifies transaction support, enabling the use of familiar SQL statements for tasks like insert, update, delete, and merge. First of all, enable PPD with vectorizing, use CBO and Tez: SET hive. The "View example " is similar to what yo want to do. key3 and. key1 and. please suggest an alternative Apr 26, 2023 · Hive Aggregate Functions are the most used built-in functions that take a set of values and return a single value, when used with a group, it aggregates all values in each group and returns one value for each group. partition. 0) Hive is able to point to the specific partition without scanning the top partition. Col2 = t. Here I am using the ordser_items table, and its structure is as follows from the describe statement. I have tried the following below in hive but it doesn't seem to be correct as some expected results are missing. 4-cdh) code optimization on MapReduce, in my project we have used lot of count distinct operation with groupby clause, an example hql is shown below. @GordonLinoff I'll try putting count in quotes but I think that part is working fine - the nested case statements seem to be the issue because when I greatly simplify them (I need them to be set up in this complex way to return null if a=1, and tx not in any of the ones listed, etc. g. 3. Thanks for this response, this has helped me out today. [RecTime] As [RecTime],X. column1,column2 are the columns of Nov 16, 2015 · Nov 16, 2015 at 23:51. t2. WITH features AS (. Jul 7, 2016 · 20. Here is one possibility, although I'm not sure if hive will accept it: where exists (select 1. As shown in the generic syntax, we can apply restriction on the group, by using having. In this example, we fetch the sum of employee's salary based on department and apply the required constraints on that sum by using HAVING clause. but they didn't return any results. In Inner Joins, you can put filter criteria into the ON clause, but in Left Joins, you need to put filter criteria for the primary table (t1 in this case) into a separate WHERE clause. It has been resolved back in July 2018. a != B. One or more CTEs can be used in a Hive SELECT, INSERT , CREATE TABLE AS SELECT How can I use In clause in Hive I want to write something like this in Hive select x from y where y. In the Hive shell you can run describe employee; and it will show all the columns in the table. 12. With Apache Hive queries, you can query the distributed data storage, including Hadoop data. To stitch your other columns together (and replace nulls with an empty space, combine coalesce with concat: Putting that all together: select Feb 17, 2020 · It shows you how to use CTEs (with clause) along with Views. 2. (id string) partitioned by (city string, village string); Sep 15, 2023 · 1. Then during the reduce stage, hive filters out the rows where A. Nov 24, 2015 · Can I use multiple "with"? Asked 13 years, 2 months ago. id,A. To do this I think the answer should be changed in a couple of ways - condition 3 should be a NOT i. a snippet of hive command for writing multiple insert statements. Now when I rerun the Insert overwrite table, but this time with completely different set of data. Jan 26, 2021 · If column types are the same, you can use CASE statements or UNION ALL in Hive: SELECT case when ${user_choice} = 1 the a else d end col1 case when ${user_choice} = 1 the b else e end col2 case when ${user_choice} = 1 the c else f end col3 FROM table1; Jul 4, 2018 · 0. Hot Network Questions Represent Hadamard gate in terms of rotations and reflections in Bloch sphere Note #1: In Hive, the query will convert the joins over multiple tables, and we want to run a single map/reduce job. In this article, we Nov 3, 2019 · Inserting data into Hive Partition Table using SELECT Clause Things get a little more interesting when you want to use the SELECT clause to insert data into a partitioned table. Here is a code example of a simple CTE/With statement (for the benefit of other people who will read this post): with date_table as (select distinct year, quarter, month, dayofmonth. id IN (SELECT table1. Finding the relevant partitions is a metastore operation and not a file system operation. A subquery, also known as a nested query or inner query, is a query embedded within the WHERE or HAVING clause of another SQL query. *. Dec 18, 2023 · The SQL WITH clause allows you to define a CTE (common table expression). The main advantage of Hive WITH clause is, you can use it wherever SELECT clause is acceptable in the SQL script or query. Hive appears to use the MySQL version, which is <=>. Subqueries in hive with where clause. select date,id,desc,count(desc) c. salary < 100000; select * from foo where salary < 75000; drop table foo; But if you use beeline to execute a file containing multiple select queries, this should work without pausing. Apache Hive 3. key1) Here my question: I have a table with some records like (name, date, type). -- Query 2 SELECT AVG(a) OVER w1 AS s1, MAX(a) OVER w1 AS s2, AVG(a) OVER Oct 10, 2018 · 2. [SQL] As [SQL] FROM [EventView] AS A . Let's take a simple example. FROM some_table. Below Query will result only the first 20 records from the table. c_lu_1,3,2)) > ' '; But it won't be an optimized solution. f,g,h,i,j. You may get the requirement to choose the joining values based on certain conditions. See here for an example of how to combine INSERT with a WITH clause. However I think to nullify condition4 the CASE statement should always evaluate to TRUE, so the WHERE statement only depends on condition1 and condition2. on t1. Hive multiple subqueries in WHERE predicate Sep 1, 2016 · Hive apparently treats Join criteria differently in Inner Joins vs. insert is set to true, these values are validated, converted and normalized to conform to their column types (Hive 0. Like in SQL, Aggregate Functions in Hive can be used with or without GROUP BY functions however these aggregation functions are Jun 20, 2021 · Example 1: If statement in Hive. 0 when multiple macros were used while processing the same row, results of the later macros were overwritten by Therefore, it can't be used to conditionally decide among multiple columns or other operations. May 27, 2017 · despite been an old question the below image might help from the book Programming Hive by Edward Capriolo, Dean Wampler and Jason Rutherglen chapter 5 page 76. t0. May 9, 2017 · 3. Modified 1 year, 3 months ago. I want to do this, to get all the rows for a given a,b combo that have the highest value of c: SELECT a, b, c. 1 Installation on Windows 10 using Windows Subsystem for Linux; Apache Hive 3. A simple query can take data from a table, apply a filter, and return the data as it is in the source table. Apr 21, 2023 · Prior to Hive 1. FROM table3 t3. Sep 2, 2014 · Common Table Expression. Say we want the data for each value in a column to be captured together. if condition example in Hive. In this query, hive joins A to B on every value - hive performs a cross join, which is a massive mapping stage (assuming your tables are large). Example: Duplicating a table by selecting all columns. Those are queries where the result of the query can be treated as a constant for IN and NOT IN statements. Let's fetch the sum of employee's salary based on department having sum >= 35000 by using the following command: hive> select department, sum (salary) from emp group In SQL there are IS NULL and IS NOT NULL conditions to be used for test for null values. You might also consider a more normalized design. ‘abc’ LIKE ‘abc’ -> True : Equality operation’abc’ LIKE ‘a%’ -> True : Pattern matching. KEY, a. Learn how to retrieve and manipulate data from tables using basic SELECT statements, WHERE clauses, aggregation functions, DISTINCT keyword, JOIN operations, ORDER BY and LIMIT clauses, and more. ) t. Follow the order in which it should be initialized in Common Table Expressions. But using two lag methods in the same query will mostly likely be more performant than row_number and left join method. Hadoop Hive supports various join types. NOT IN is a simpler way to write your query: SELECT t3. i_prtitn in (select * from my_prtitn) and rel. FROM a LEFT SEMI JOIN b ON (a. (See HIVE-12277. key = v_roman. SELECT * FROM user_table WHERE first_name LIKE ANY ( 'root~%' , 'user~%' ); We can convert it into equivalent HIVE queries as : SELECT * FROM user_table WHERE first_name LIKE 'root~%' OR first_name LIKE 'user~%'. z in (select distinct z from y) order by x; But I am not finding any way of doing it. col3 IN (1,2) The gist of this is narrow/filter your rowset to the rows that you want to test col3 IN (1,2) then count the DISTINCT values of col3 to make sure both 1 and 2 exist and not just 1 & 1 or 2 & 2. mode=nonstrict; Hive converts joins over multiple tables into a single map/reduce job if for every table the same column is used in the join clauses. You can use multiple WITH statements in one SQL query to define multiple CTEs. 0 and 2. Subqueries can return individual values or a list of records; their results can be used in the outer query where an expression is allowed. 0, CTAS statements can define a partitioning specification for the target table (HIVE-20241). While Hive doesn't supports multi-value LIKE queries which are supported in SQL : ex. DISTRIBUTE BY controls how map output is divided among reducers. I checked the difference between sort by vs order by clause in hive. b and then joins the two together. Nov 16 Dec 6, 2018 · 1. )t. It is done by querying the metasore and not by scanning the directories. Aug 1, 2012 · Here's how to create a hive table with a partition on the column you specified. WHEN (condition4) THEN result4. If none of these options are given, the default is ALL (all matching rows are returned). Jul 10, 2015 · I see two issues: First of all, JOINs in hive only work with equality conditions, that like isn't going to work there. Hive accepts CTEs with INSERT statements, preceding the INSERT as with a SELECT. Best Regards Apr 16, 2020 · Checking multiple conditions in CASE expression SQL. If you are using such a version, then your problem is just that you have WHERE and GROUP BY the wrong way round: FROM <mytable2> tab2. value as prev_value. I'm using Hadoop 2. Oct 20, 2016 · 11. As we see above, the key execution parameters for a WITH clause are: Mar 14, 2018 · 0. vectorized. optimize. max_month_cd IS NOT null then 0 else 1 end test_1, CASE WHEN t2. For example, you can have OR condition in the joining condition. Hive is a data warehouse infrastructure built on top of Hadoop that provides data summarization, querying, and analysis. #features. The hive partition is similar to table partitioning available in SQL server or any other RDBMS database tables. Col1. KEY IN. The query below is converted into a single map/reduce job as only key1 column for b is involved in the join. By default, MapReduce computes a hash on the keys output by mappers and tries to evenly distribute the key-value pairs among the available reducers using the hash values. You cannot do the same with subqueries. Feb 10, 2017 · Select statement and group by clause. Example: Selecting specific columns from one or more tables. I have two Hive tables of the same structure (schema). May 7, 2021 · The WITH clause is a drop-in replacement to normal subqueries. id. NewTable PURGE; CREATE TABLE testdb. You can then reference the subquery block multiple places in the query by specifying query_name. Mar 22, 2018 · A Hive WITH Clause can be added before a SELECT statement of you query, to define aliases for complex and complicated expressions that are referenced multiple times within the body of the SELECT statements. ON (v_text. WHERE. In Hive, there are two primary types of subqueries: 1. Aug 15, 2008 · As mentioned in @Denny Lee's answer, we need to involve a staging table (invites_stg) managed or external and then INSERT from staging table to partitioned table (invites in this case). It's just where you put you INSERT statement the problem. hive (retail_db_ali)> describe order_items; OK. Oracle Database optimizes the query by treating the query name as either an inline view Jan 6, 2020 · The join in Hive is used to combine the records from multiple tables based on the joining condition. hive> select * from. Oct 26, 2015 · I want to read a . The ALL and DISTINCT options specify whether duplicate rows should be returned. The column containing the date is in string format (yyyy-mm-dd). some_col LIKE '%xyz%' OR. DISTINCT specifies removal of duplicate rows from the result set. ) Prior to Hive 2. bounces, 0) AS bounces, IFNULL(totals. Materialized views optimize queries based on access patterns. You need to repeat the expression: and (a. (A and B and D) or C. a,b,c,d,e. if your filter column is a partition in your table, that is the main purpose of the partitioning, even if you where clause is out of your subquery (predicate pushdown) Lateral view can be a expensive operation sometimes, for this reason Hive apply the filter before apply the lateral view, see the following execution plan based on your query Mar 9, 2024 · Hive uses the columns in Cluster by to distribute the rows among reducers. Reply. Jun 3, 2019 · 1. From this table, we want to find the patients who needs Ventilator support. Corrected version: CASE WHEN t2. Scalar Subqueries. some_col LIKE '%abc%' OR. Syntax: SELECT column1,column2,,columnN from <tablename> WHERE <condition>. Also my_time and your_time are in timestamp formats. Sep 15, 2016 · My goal is to add data directly into the hive table by providing a values directly? I have provided an oracle example of a sql query I want to achieve: INSERT INTO t1 (name) values ('John') Jan 15, 2019 · Hive - Multiple sub-queries in where clause is failing. enabled=true; Sep 14, 2020 · 1. It conditions the patient id, name and their oxygen level as below. ), the query works. Aug 9, 2018 · As per hive documentation: Starting with Hive 3. get the value from subquery in hive. A complex query may require complex transformations to the source data or may need to read and join data from multiple tables or views. Follow one of the following articles to configure a Hive instance on your computer if you don't have one to work with yet. Col2. To update the data, you can use MERGE statement, which now also meets ACID standards. However, there is no collect() function. Oct 27, 2021 · Multiple lateral view produce Cartesian product. 7. Suppose I have three type a, b and c. If the string does not contain any percentage sign or underscore, then pattern is the string itself, in this case LIKE acts as an equality operator. A CTE is like a table that is populated during query execution. 10/29/2013 10:43:26 AM. CREATE TABLE employee (employeeId INT, employeeName STRING) PARTITIONED BY (employeeSalary INT); The partition column is specified in the PARTITIONED BY section. FROM tablename. Dec 27, 2017 · does hive support query with multiple column in "IN" clause like below ? Sep 9, 2015 · You can use Hive Conditional CASE WHEN function for if-else scenario. Jan 29, 2014 · I'm trying to filter data between September 1st, 2010 and August 31st, 2013 in a Hive table. date,A. Note #2: If we use the different and multiple columns in the same join clause, the query will execute with the multiple map / reduce jobs. May 27, 2020 · You overall syntax is fine. The file has a columnfamily, which has 3 columns inside: news, social and all. Demo: with table1 as (--Data example, use your table instead. from hive_tab group by date,id,desc)A. id IN (select id from <mytable1>) GROUP BY tab2. Aug 13, 2021 · The SQL WITH clause was introduced by Oracle in the Oracle 9i release 2 database. . (. KEY = b. val, b. The CTE is defined only within the execution scope of a single statement. Jun 5, 2017 · Hive converts joins over multiple tables into a single map/reduce job if for every table the same column is used in the join clauses e. – tzhang94. Example: Writing query results to a different format. The CASE Statement will provide you better readability with the same functionality. fullVisitorId, IFNULL(totals. Feb 28, 2018 · Hive LIKE Statement Patterns Matching. WHERE t3. Is it possible to have multiple WITH clause statements in the BigQuery editor with #standardSQL e. Jul 10, 2022 · To run the SQL statements in this article, you need a Hive environment. Partition eliminates creating smaller physical tables, accessing, and Here are some commonly used windowing functions in Hive: ROW_NUMBER () : Assigns a unique row number to each row within the partition. The output of each of the select statements is written to the chosen table (or partition). Aug 18, 2015 · 3. In this article, you’ll discover the concept of Hive partitioning, its Aug 30, 2017 · 5. I can wrap the RANK () in a subselect, and check the value outside: Jul 26, 2022 · 1. WHERE a. I'd say put the longer version of the code (that already works) in a view, and don't worry about it in your formal queries. execution. In this blog post, we'll explore Hive Dec 25, 2018 · How to achieve multiple conditions in having count clause? Such as case when prob=1 then having count(cust_id)&lt;=3 or case when prob=0 then having count(cust_id)&lt Mar 9, 2024 · Join queries can perform on two tables present in Hive. Hive query conditional statement in same select query. I think this is possible using UNION ALL based on Jan 3, 2018 · Already tried with the following query : select A. key); Position the INSERT above the main SELECT. FROM x UNION ALL. 0. Gordon Linoff. RANK () : Assigns a unique rank to each distinct row within the partition, with the same rank for ties. ((A and B) or C) and D. SELECT *,ROW_NUMBER() over (Order by id) as rowid FROM <tab_name>. WHERE year=2017 AND month=03 AND day=27 AND NOT utmsource <=> 'facebook'; Apr 22, 2019 · But in where clause again Im converting the data, this may lead to performance issues on terabyte size tables. c). The only difference is that you can re-use the same derived result set multiple times in your code when you use the WITH clause to generate a CTE. AND s. key3 = t2. key1 = t2. Viewed 415k times. 2. SELECT a. nk ry km tp rs cm cd jo pc zj