Blogempty array sql

It's Array-SQL: SQL/MDA unleashes the flexibility and scalability of SQL for arrays, the predominant Big Data category in science and engineering. It's ISO: In June 2014, ISO/IEC JTC1 SC32 WG3 has decided to establish ISO 9075 Part 15: SQL/MDA as ISO's latest SQL extension, specifically for Big Science Data. SQL/MDA concepts are crafted along ...

Blogempty array sql. Jun 24, 2021 · I think OP is asking for empty stores, so probably the query needs to be tweaked to: SELECT * FROM c where ARRAY_LENGTH(c.stores) = 0 . If c.stores is an optional property, then it needs to be SELECT * FROM c where ARRAY_LENGTH(c.stores) = 0 or NOT IS_DEFINED(c.stores) –

Arrays are ordered lists in BigQuery. They are very powerful once you know how to use them, and can help with:. Transforming non-normalized data (e.g. Survey responses) Advanced string manipulation; Optimising storage and performance

Dec 26, 2023 · Spark SQL Array Functions: Check if a value presents in an array column. Return below values. true – Returns if value presents in an array. false – When valu eno presents. null – when array is null. Return distinct values from the array after removing duplicates. May 29, 2014 · SELECT person.person_name, array_agg(pet.animal_name) AS pets FROM person LEFT JOIN pet ON person.person_name = pet.person_name GROUP BY person.person_name ; I understand why I am getting the array with the NULL value inside, I want to know how to get an empty array instead. DECLARE @Values NVARCHAR (MAX) =N'Value 1,Value 2,Value 3,Value 4,Value 5'; SELECT Item AS NumSplit FROM dbo.Split_Numbers (@Values, N','); SELECT Item AS CTESplit FROM …That's how you can create a JSON array: CREATE FIELD OutputRoot.JSON.Data.belongings IDENTITY(JSON.Array)belongings; SET OutputRoot.JSON.Data.belongings.Item[1] ... T-SQL: JSON array. Hot Network Questions Do Minecraft structure blocks transfer to other versions?A VARIANT value can be missing (contain SQL NULL), which is different from a VARIANT null value, which is a real value used to represent a null value in semi-structured data. VARIANT null is a true value that compares as equal to itself. For more information, see VARIANT null.. If data was loaded from JSON format and stored in VARIANT, then the …Oracle uses collections in PL/SQL the same way other languages use arrays. Oracle provides three basic collections, each with an assortment of methods. This article was originally written against Oracle 8i, but it includes operators, conditions and functions that were added in later releases. Index-By Tables (Associative Arrays)Enumerating JSON arrays with OPENJSON. Ask Question Asked 2 years, 1 month ago. Modified 2 years, 1 month ago. ... Is it possible to get SQL Server 2008 to download a file from a URL. 4. Adding indices to views. 3. XML/SQL Server 2008 Error: XQuery...Cannot implicitly atomize or apply 'fn: ...Arrays are ordered lists in BigQuery. They are very powerful once you know how to use them, and can help with:. Transforming non-normalized data (e.g. Survey responses) Advanced string manipulation; Optimising storage and performance

You can instead use ISNULL to return an empty array SELECT ISNULL(( SELECT t.field_a as a, t.field_b as b FROM mytable t FOR JSON PATH, INCLUDE_NULL_VALUES ), '[]'); …Accessing array elements. To access an array element you use the following syntax: varray_name (n); Code language: SQL (Structured Query Language) (sql) n is the index of the element, which begins with 1 and ends with the max_elements the maximum number of elements defined in the VARRAY type. If n is not in the range (1, max_elements), …I have a problem splitting single column values to multiple column values. Name ------------ abcd efgh ijk lmn opq asd j. asdjja asb (asdfas) asd asd. first_name last_name ---------------------------------- abcd efgh ijk opq asd asdjja asb asd asd null. The middle name can be omitted (no need for a middle name) The columns are already …Jun 8, 2017 · I'm used to writing SQL by hand. Which is why traditionally, when interpolating data into an IN() clause, I prefix a "0" or "-1" in order to ensure that the resultant IN() clause doesn't end up empty (which would throw a SQL exception). SQL is a standard language for storing, manipulating and retrieving data in databases. Our SQL tutorial will teach you how to use SQL in: MySQL, SQL Server, MS Access, Oracle, Sybase, Informix, Postgres, and other database systems. Start learning SQL now ». PHP: array - Manual array is a function that creates an array from a list of variables. It can also be used to access the elements of an array by index or key. Learn how to use this function with examples and see how it differs from other array functions and types in PHP.It's Array-SQL: SQL/MDA unleashes the flexibility and scalability of SQL for arrays, the predominant Big Data category in science and engineering. It's ISO: In June 2014, ISO/IEC JTC1 SC32 WG3 has decided to establish ISO 9075 Part 15: SQL/MDA as ISO's latest SQL extension, specifically for Big Science Data. SQL/MDA concepts are crafted along ...

ADF and Synapse data flows gave a Flatten transformation to make it easy to unroll an array as part of your data transformation pipelines. We've updated the Flatten transformation to now allow for multiple arrays that can be unrolled in a single transformation step. This will make your ETL jobs much simpler with fewer …Checking value in an array inside one SQL query with WHERE clause. I want to know is this practically possible in sql (using php as server-side), where in you have an array of values (numbers), and you try to retrieve data based on values inside that array.. posts ( id int (11) primary key, posts varchar (140), user_id int (11) foreign key );1. PL/SQL is a procedural language. 2. PL/SQL is a block structure language. 3. PL/SQL handles the exceptions. 4. PL/SQL engine can process the multiple SQL statements simultaneously as a single block hence reduce network traffic …Taxonomy Parameters. Show posts associated with certain taxonomy. {tax} (string) – use taxonomy slug.(Deprecated since version 3.1 in favor of ‘tax_query‘).tax_query (array) – use taxonomy parameters (available since version 3.1).. relation (string) – The logical relationship between each inner taxonomy array when there is more than one.Possible …I am using SQL Server 2008 R2. It is working fine. But recently, I have changed my hosting server and I came to know that they have installed SQL Server 2012 on Server. ... Index was outside the bounds of the array in SQL Server. 1. When using SQL server 2008 Index was outside the bounds of the array. (Microsoft.SqlServer.Smo) Related. 3.

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You put those variables in an array just as you would put any variable into an array. How do you normally do it. The answer to your question is in your question! And as @Matt pointed out you should be using a better database connection method. Your code is likely vulnerable to SQL Injection –2. Edit your Excel online, if needed. You can edit your data online like Excel through Table Editor, and the changes will be converted into JSON Array in real-time. 3. Copy the converted JSON Array. The JSON data has been generated in the box of Table Generator. This handy converter will output an array of objects by default, in addition to ...Oct 10, 2023 · If the array is empty or all elements are NULL the result type is an array of type null. Examples-- an array of integers > SELECT array(1, 2, 3); [1,2,3] -- an array of strings > SELECT array(1.0, 1, 'hello'); [1.0,1,hello] Related [ ] operator; map function; collect_set aggregate function; collect_list aggregate function; SQL data type rules Mar 5, 2014 · I have an array in php, this array is fetched from database. sometimes the array structure is like. array(""=>NULL) but sometimes it's also contain actual data from the DB. but one thing for sure, it is never be an empty array (array()) how do i check if array is contain actual data?. Accessing array elements. To access an array element you use the following syntax: varray_name (n); Code language: SQL (Structured Query Language) (sql) n is the index of the element, which begins with 1 and ends with the max_elements the maximum number of elements defined in the VARRAY type. If n is not in the range (1, max_elements), …Sep 19, 2016 · 1. Right now I had exactly the same problem, I think this is the right way to handle it according to the microsoft documentation: DECLARE @Array TABLE (TEST VARCHAR (100)); SELECT arr = ISNULL ( (SELECT TEST FROM @Array FOR JSON PATH), ' []') FOR JSON PATH, WITHOUT_ARRAY_WRAPPER.

Oracle uses collections in PL/SQL the same way other languages use arrays. Oracle provides three basic collections, each with an assortment of methods. This article was originally written against Oracle 8i, but it includes operators, conditions and functions that were added in later releases. Index-By Tables (Associative Arrays)Mar 27, 2013 · If you need it in SELECT section can use like this. SELECT ct.ID, ISNULL (NULLIF (ct.LaunchDate, ''), null) [LaunchDate] FROM [dbo]. [CustomerTable] ct. You can replace the null with your substitution value. Oracle's NVL (var1, 'value') will take care of empty string ' ' replacement. First published on MSDN on Jun 10, 2016 Sql Server 2016 and Azure Sql Database enables you to easily modify JSON object and arrays. JSON_MODIFY updates the value of a property in a JSON string and returns the updated JSON string. Here I will show how to append objects in JSON array.Visual Studio 17.7 Preview 3 and .NET 8 Preview 6 continue the evolution of C# 12. This preview includes features designed to lay the groundwork for future performance enhancements. Easy access to inline arrays will allow libraries to use them in more places without effort on your part.In the first demo, we will show how to use a table variable instead of an array. We will create a table variable using T-SQL: 1. 2. 3. DECLARE @myTableVariable TABLE (id INT, name varchar(20)) insert into @myTableVariable values(1,'Roberto'),(2,'Gail'),(3,'Dylan') select * from @myTableVariable. We created a table variable named myTableVariable ...Apr 26, 2021 · Fortunately, there are ways to resolve the issue. I am going to explain the most efficient alternatives to arrays in SQL Server. Table Valued Parameters (TVP) Instead of Arrays. The SQL Server 2008 introduced a feature called table-valued parameters (TVP). It enabled users to combine values in a table and process them in table format. Thus ... An array value is a structure that contains an ordered collection of elements. All elements of an array value must have the same data type. The cardinality of the array is equal to the number of elements in the array. An array value can be non-empty, empty (cardinality zero), or null. The individual elements in the array can be null or not null ... MongoDB correlated subqueries are comparable to SQL correlated subqueries, where the inner query references outer query values. An SQL uncorrelated subquery does not reference outer query values. MongoDB 5.0 also supports concise correlated subqueries.Jan 16, 2018 · Where are the arrays in SQL Server? The short answer is that we use temporary tables or TVPs (Table-valued parameters) instead of arrays or we use other functions to replace the used of arrays. The use of temporary tables, TVPs and table variables is explained in another article: The tempdb database, introduction and recommendations Oracle uses collections in PL/SQL the same way other languages use arrays. Oracle provides three basic collections, each with an assortment of methods. This article was originally written against Oracle 8i, but it includes operators, conditions and functions that were added in later releases. Index-By Tables (Associative Arrays)

This is not the entire procedure, just the part where I want to return an empty JSON array by checking if deleted is not null, it means that there is a datetime set for that row - book deleted (if it is null, it is not deleted). PS1: if there is any other better way than empty array, id like to hear about it too!

This is not the entire procedure, just the part where I want to return an empty JSON array by checking if deleted is not null, it means that there is a datetime set for that row - book deleted (if it is null, it is not deleted). PS1: if there is any other better way than empty array, id like to hear about it too!Visual Studio 17.7 Preview 3 and .NET 8 Preview 6 continue the evolution of C# 12. This preview includes features designed to lay the groundwork for future performance enhancements. Easy access to inline arrays will allow libraries to use them in more places without effort on your part.The first type of collection available in PL/SQL, this was originally called a “PL/SQL table” and it can be used only in PL/SQL blocks. Associative arrays can be sparse or dense and can be indexed by integer or string. Nested table. The nested table can be used in PL/SQL blocks, in SQL statements, and as the data type of columns in tables.Sep 23, 2017 · Empty arrays normally have NULL as array dimensions. SELECT ' {}'::text [] AS test, array_dims (' {}'::text []); test | array_dims ---------+------------ {} | <NULL> Hence, the comparison lexemes = ' {}'::text [] returns FALSE. Looks like a bug to me. I tested versions 8.4 - 10 Beta. It's in all versions. 9. This is easy to do with the TABLE () function. The one catch is that the array variable must use a type declared in SQL. This is because SELECT uses the SQL engine, so PL/SQL declarations are out of scope. SQL> create or replace type numbers_nt as table of number 2 / Type created. SQL> SQL> declare 2 l_array numbers_nt; 3 begin …Why, because arrays are everywhere in the Control Flow of Azure Data Factory: (1) JSON output most of the activity tasks in ADF can be treated as multiple level arrays. (2) Collections that are ...Java in 2023: Version Releases, Popularity, and Future Trends. How to Get Good at Java in 2023: Leveraging AI for Faster Learning Learn how you can get good at Java quickly using AI assistants. Goodbye to 2023: Key CodeGym’s Achievements and Plans. The Most Popular Questions About Java: Unveiling the Java Ecosystem, Origins, and Popularity.In SQL, if you want to perform a SELECT with a wildcard, ... If you wanted to use an array of possible values, you'd use: SELECT * FROM table_name WHERE field_name IN ('one', 'two', 'three') But, what would you do if you wanted to use both wildcards AND an array?

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How to Query Arrays in PostgreSQL. You can retrieve the contents of an array by specifying it in the select clause like any other column: You can also specify which element of an array to retrieve by specifying its position inside the square brackets. By default PostgreSQL uses 1 as the first position, though this can be overridden as shown in ...splitByRegexp. Splits a string into substrings separated by a regular expression. It uses a regular expression string regexp as the separator. If the regexp is empty, it will split the string s into an array of single characters. If no match is found for this regular expression, the string s won't be split.You can specify only one ARRAY JOIN clause in a SELECT query.. Supported types of ARRAY JOIN are listed below:. ARRAY JOIN - In base case, empty arrays are not included in the result of JOIN.; LEFT ARRAY JOIN - The result of JOIN contains rows with empty arrays. The value for an empty array is set to the default value for the array element …-1 I select some tables with json_agg and json_build, all works but I got some data that I dont want it, My product_media (pm) is empty there are no images, if I use …I've been searching through all the examples and answers of how to pass any array to sql server without the hassle of creating new Table type,till i found this linK, below is how I applied it to my project:--The following code is going to get an Array as Parameter and insert the values of that --array into another table.Jun 29, 2015 · I'm joining the tables like this, using array_agg to aggregate the tags into one field: SELECT objects.*, array_agg(tags.tag) AS tags, FROM objects LEFT JOIN taggings ON objects.id = taggings.object_id LEFT JOIN tags ON tags.id = taggings.tag_id However, if the object has no tags, Postgres returns this: [ null ] instead of an an empty array. Custom types in T-SQL enable you to create alias for some table, .Net or built-in type. Once you create a custom type, you can use it for local variables and parameters of functions. The following statements create int and string arrays as a tables with one column with specified type: create type "int []" as table (value int); create type ...PHP: array - Manual array is a function that creates an array from a list of variables. It can also be used to access the elements of an array by index or key. Learn how to use this function with examples and see how it differs from other array functions and types in PHP. ….

Apr 26, 2021 · Fortunately, there are ways to resolve the issue. I am going to explain the most efficient alternatives to arrays in SQL Server. Table Valued Parameters (TVP) Instead of Arrays. The SQL Server 2008 introduced a feature called table-valued parameters (TVP). It enabled users to combine values in a table and process them in table format. Thus ... 8. Fortunately, I found in the existing PL/SQL code I have to maintain, a working "native" behavior: V_COUNT := MY_ARRAY.COUNT; should do the trick. This one is very hard to find with Google, since "count" is more frequently referring to the SELECT COUNT (...) which can be found in SQL queries... Share. Improve this answer.Single-cell and multi-cell array formulas in Excel. Excel array formula can return a result in a single cell or in multiple cells. An array formula entered in a range of cells is called a multi-cell formula.An array formula residing in a single cell is called a single-cell formula.. There exist a few Excel array functions that are designed to return multi-cell …Go has a built-in function, copy, to make this easier. Its arguments are two slices, and it copies the data from the right-hand argument to the left-hand argument. Here’s our example rewritten to use copy: newSlice := make ( []int, len (slice), 2*cap (slice)) copy (newSlice, slice) Run. The copy function is smart.There is an accompanying article, Arrays and Lists in SQL Server, The Long Version, which includes many more ways to crack lists in to tables – and you could argue too many. This longer article is intended for an audience with a little more experience. Most likely, this short story should tell you all you need, but in a few places I will ... An array value is a structure that contains an ordered collection of elements. All elements of an array value must have the same data type. The cardinality of the array is equal to the number of elements in the array. An array value can be non-empty, empty (cardinality zero), or null. The individual elements in the array can be null or not null ... Oct 10, 2023 · If the array is empty or all elements are NULL the result type is an array of type null. Examples-- an array of integers > SELECT array(1, 2, 3); [1,2,3] -- an array of strings > SELECT array(1.0, 1, 'hello'); [1.0,1,hello] Related [ ] operator; map function; collect_set aggregate function; collect_list aggregate function; SQL data type rules May 1, 2018 · it's sql server method. select * into #Array --it's sql server temp table from ( select '123' [value] union all select '456' [value] union all select '789' [value] ) T ; SELECT * FROM YourTable WHERE YourColumn in (select * from #Array) use temp table like collection in sql In Snowflake, arrays are multi-sets, not sets. In other words, arrays can contain multiple copies of the same value. ARRAY_INTERSECTION compares arrays by using multi-set semantics (sometimes called “bag semantics”), which means that the function can return multiple copies of the same value. If one array has N copies of a value, and the ... Blogempty array sql, We should take care of SQL injection vulnerabilities and an empty condition.I am going to handle both as below. For a pure numeric array, use the appropriate type conversion viz intval or floatval or doubleval over each element. , To build a blog with Next.js and MDX, there are four popular options that you can choose from. They are: @next/mdx, which is the official tool built by the Next.js team. Kent C. Dodds' mdx-bundler. next-mdx-remote, which is a tool built by the Hashicorp team., Jan 8, 2016 · Jun 19, 2015 at 8:56. 13. Just as a note for anyone trying to create a default value via SqlAlchemy (for python): you have to use {} for default value in the ORM mapping, e.g. sizes = Column (postgresql.ARRAY (postgresql.TEXT), server_default=" {}") and let it do the implicit conversion, as mentioned in @Hett comment above. – K Raphael. , The DoublePrecisionFloatingPoint_value conforms to IEEE-754. path. Is an optional JSON path expression that references an object or an array within jsonExpression.OPENJSON seeks into the JSON text at the specified position and parses only the referenced fragment. For more info, see JSON Path Expressions (SQL Server).. …, Arrays and composites are converted recursively to arrays and objects (multidimensional arrays become arrays of arrays in JSON). Otherwise, if there is a cast from the SQL data type to json , the cast function will be used to perform the conversion; [a] otherwise, a scalar JSON value is produced., You put those variables in an array just as you would put any variable into an array. How do you normally do it. The answer to your question is in your question! And as @Matt pointed out you should be using a better database connection method. Your code is likely vulnerable to SQL Injection –, Create a test table with a text array (an array of strings): Go to the Table editor page in the Dashboard. Click New Table and create a table with the name arraytest. Click Save. Click New Column and create a column with the name textarray, type text, and select Define as array. Click Save., AI Refactorings in IntelliJ IDEA. Neat, efficient code is undoubtedly a cornerstone of successful software development. But the ability to refine code quickly is becoming increasingly vital as well. Fortunately, the recently introduced AI Assistant from JetBrains can help you satisfy both of these demands. In this article, …., Nov 5, 2014 · Something does not seem correct with this answer. In 9.5.1, RAISE NOTICE 'Array % has length of %', new_arr, array_length(new_arr, 1); prints Array {} has length of <NULL>. So does it really create an empty array, does it just rely on some other obscure reason to work, or is it a bug in array_length()? – , An array is a comma-delimited list of elements inside square brackets, as in. Copy code snippet. ["SQL", "PL/SQL"] The index for a JSON array starts at 0, which is different from the norm for PL/SQL collections, where nested tables and varrays start at index value 1. So the above array has elements defined at index values 0 and 1, not 1 …, CREATE OR REPLACE FUNCTION f_check_no_null (anyarray) RETURNS bool LANGUAGE sql IMMUTABLE AS 'SELECT CASE WHEN $1 IS NOT NULL THEN array_position($1, NULL) IS NULL END'; You can then use it in a check constraint: CREATE TABLE foo ( array_with_no_nulls TEXT[] NOT NULL CHECK(f_check_no_null(array_with_no_nulls)) ); , Jan 16, 2017 · Array object is not present in Sql Server. You can create a temporary table, as follow. CREATE TABLE #mytemp (<list of field>) where you can store your information. You can perform a JOIN operation to use that with other tables or if you want to create a loop you can define a CURSOR to process every row of your temporary table , @elliotching yes, you just must have an array with ids, everything else is generated by 1-2 lines of script, here is the long version just for readability and for comments on what each line do – ustmaestro, 2 Answers. You could do a very simple UNION ALL and group by date later with a SUM to get the values; SELECT DATE (FROM_UNIXTIME (date)) date, SUM (registered_user) registered_user, SUM (logged_in_user) logged_in_user FROM ( SELECT user_reg_date date, 1 registered_user, 0 logged_in_user FROM users UNION ALL …, MongoDB correlated subqueries are comparable to SQL correlated subqueries, where the inner query references outer query values. An SQL uncorrelated subquery does not reference outer query values. MongoDB 5.0 also supports concise correlated subqueries., Feb 27, 2023 · We can insert array elements in an array by mentioning them within curly braces {} with each element separated by commas. Here is an example to illustrate the method for element addition in an array in SQL. Let us insert details into the above mentioned “product_details” table. The parts in “Green” color are the sections that illustrate ... , DECLARE @Values NVARCHAR (MAX) =N'Value 1,Value 2,Value 3,Value 4,Value 5'; SELECT Item AS NumSplit FROM dbo.Split_Numbers (@Values, N','); SELECT Item AS CTESplit FROM …, May 25, 2013 · Add a comment. 1. You could use a case statement to handle the null value before it gets passed into array_agg: select array_to_string (array_agg (case xxx when null then 'whatever' when '' then 'foo' else xxx end), ', ') This way you can map any number of "keys" to the values you like. Share. , Dec 26, 2023 · Spark SQL Array Functions: Check if a value presents in an array column. Return below values. true – Returns if value presents in an array. false – When valu eno presents. null – when array is null. Return distinct values from the array after removing duplicates. , It's Array-SQL: SQL/MDA unleashes the flexibility and scalability of SQL for arrays, the predominant Big Data category in science and engineering. It's ISO: In June 2014, ISO/IEC JTC1 SC32 WG3 has decided to establish ISO 9075 Part 15: SQL/MDA as ISO's latest SQL extension, specifically for Big Science Data. SQL/MDA concepts are crafted along ..., Feb 8, 2019 · Teams. Q&A for work. Connect and share knowledge within a single location that is structured and easy to search. Learn more about Teams , In PySpark, the JSON functions allow you to work with JSON data within DataFrames. These functions help you parse, manipulate, and extract data from JSON columns or strings. These functions can also be used to convert JSON to a struct, map type, etc. I will explain the most used JSON SQL functions with Python examples in this article., An array is a comma-delimited list of elements inside square brackets, as in. Copy code snippet. ["SQL", "PL/SQL"] The index for a JSON array starts at 0, which is different from the norm for PL/SQL collections, where nested tables and varrays start at index value 1. So the above array has elements defined at index values 0 and 1, not 1 …, The SQL ARRAY data type is a collection type that allows a single variable to store multiple values of the same data type. The ARRAY data type is particularly …, Arrays are ordered lists in BigQuery. They are very powerful once you know how to use them, and can help with:. Transforming non-normalized data (e.g. Survey responses) Advanced string manipulation; Optimising storage and performance, Nov 26, 2021 · I'm trying to use. @sanity/client. to fetch some data from the CMS but something's not working since I keep getting an empty array when executing. client.fetch ("* [_type == 'document']") (my dataset already has some documents created as I've tested in Vision) . Does anybody know how to debug this? , January/February 2007. Suppose you've just received an e-mail detailing several IT initiatives, two of which will affect your future application development techniques. First, all applications should be designed to minimize network utilization. And second, applications that use Oracle databases must use PL/SQL for access to the database …, You need two additional APPLY operators with two different OPENJSON() calls. First call is with default schema and the result is a table with columns key, value and type.The second call is with explicit schema with the appropriate columns, defined using the WITH clause:. Table:, JSON_query_wrapper_clause. Use this clause to control whether this function wraps the values matched by the path expression in an array wrapper—that is, encloses the sequence of values in square brackets ( [] ). Specify WITHOUT WRAPPER to omit the array wrapper. You can specify this clause only if the path expression matches a single JSON ..., The SQL ARRAY data type is a collection type that allows a single variable to store multiple values of the same data type. The ARRAY data type is particularly …, SQL is a standard language for storing, manipulating and retrieving data in databases. Our SQL tutorial will teach you how to use SQL in: MySQL, SQL Server, MS Access, Oracle, Sybase, Informix, Postgres, and other database systems. Start learning SQL now ». , Oct 10, 2023 · If the array is empty or all elements are NULL the result type is an array of type null. Examples-- an array of integers > SELECT array(1, 2, 3); [1,2,3] -- an array of strings > SELECT array(1.0, 1, 'hello'); [1.0,1,hello] Related [ ] operator; map function; collect_set aggregate function; collect_list aggregate function; SQL data type rules , 7. The easiest would be to get the second value from this result set in the application: SELECT DISTINCT value FROM Table ORDER BY value DESC LIMIT 2. But if you must select the second value using SQL, how about: SELECT MIN (value) FROM ( SELECT DISTINCT value FROM Table ORDER BY value DESC LIMIT 2 ) AS t. Share.