Json columns mysql. JSON_TABLE( expr , path COLUMNS.

17, the expr for a key_part specification can take the form (CAST json_expression AS type ARRAY) to create a multi-valued index on a JSON column. 1 JSON Function Reference. pageTitle' → designates the child column to be extracted. As the MySQL manual notes: JSON columns cannot be indexed. One example, how add a JSON file into MySQL using Python. INT / VARCHAR (100) → desired data type. An index specification of the form (key_part1, key_part2, ) creates an index with multiple key parts. If you use an aggregate function in a statement containing no GROUP BY clause, it is equivalent to grouping on all rows. 7 we introduced JSON functionality into the MySQL Server. JSON_TABLE () 函数将在以下情况下返回错误：. 17 supposed to work with multi value JSON indexes, like this: CREATE INDEX data__nbr_idx ON a1( (CAST(data->'$. Here is the syntax of the MySQL JSON_TABLE() function: Mar 27, 2018 · This solution works: Using MySQL JSON field to join on a table. 19. Questions: Below is the table format, here I want to add 1 more key in JSON data column for t1 table. MySQL JSON_TABLE () 函数从一个指定的 JSON 文档中提取数据并返回一个具有指定列的关系表。. The MySQL JSON data type offers several advantages for storing and managing JSON data: JSON documents are stored in an internal format that enables quick read access to document elements. The following outlines the key elements of JSON path syntax: Mar 28, 2016 · Let's say I have a JSON column named data in some MySQL table, and this column is a single array. For example, if you have a table named Products with a sparse column named Price, and a non-sparse column named Name, the EF Core code to represent this table might look something like this: language-csharp. JSON_ARRAY () – Create JSON arrays from a list of values. Use column ->> path operator if you want to extract and unquote the extracted values. id, u. MySQL supports two aggregate JSON functions JSON_ARRAYAGG () and JSON_OBJECTAGG (). You should have a look at popular NoSQL document-based database like MongoDB and CouchDB. We can do this in a few different ways. Sep 23, 2022 · MySQL has implemented rudimentary support for the JSON data type with version 5. Seven years later, MySQL now supports numerous SQL functions to work with JSON documents, it provides automatic content validation, allows for partial in-place updates, and uses a binary Feb 16, 2023 · When working with a SQL Server database that contains sparse columns, EF Core will create corresponding entity properties that are nullable. user_name, g. name AS groupname FROM users u LEFT JOIN groups g ON JSON_CONTAINS(u. This method only works in MySQL 8. A maximum of 3 JSON columns per NDB table is supported. Jun 14, 2016 · I am trying to change a MySQL column from varchar(9000) NULL to the new JSON data type in MySQL 5. 0 Labs: JSON aggregation functions. 7 JSON Schema Validation Functions 14. Some of the data inside the JSON documents have null values and I want to filter out these null values. The second method is to create a function-based index. 19, “Aggregate Functions”, for descriptions of these. I try using this query in mysql but i did not get idea how can i calculate number of items in sort field: SELECT COUNT(sort) AS total_channels FROM channels WHERE JSON_SEARCH(bouquet, 'one', "1") IS NOT NULL; Dec 2, 2016 · On creating table set your field as JSON datatype. Lets do exactly that by reusing the example from my previous blog post: 1. Add to json in MySQL. Jan 26, 2024 · The Basic of JSON_SET () The JSON_SET() function in MySQL is used to update the value of a JSON document or insert a value if it does not exist. time' / PATH '$. The EXPLAIN statement provides information about how MySQL executes statements. Returns NULL if any argument is NULL. In the example above, we are creating a table called products with three columns: id, name, and details. Here’s the syntax of the JSON_MERGE_PRESERVE() function: JSON_MERGE_PRESERVE(json_doc, json_doc[, json_doc] ) Code language: SQL (Structured Query Language) (sql) In this Apr 4, 2018 · Can anyone shed some light on how MySQL indexes JSON data types? From the MySQL official docs: JSON documents stored in JSON columns are converted to an internal format that permits quick read access to document elements. json_contains(Story. The syntax goes like this: Apr 29, 2016 · MySQL 8. Document Validation - Only valid JSON documents can be stored in a JSON column, so you get automatic validation of your data. Where(x => x. 9 and later, the -> operator (column->path) serves as an alias for the JSON_EXTRACT() function. May 7, 2012 · Not sure if MySQL. 7 JSON Schema Validation Functions. This allows you to integrate the JSON import feature into your own custom (JavaScript or Python) script to migrate data to May 23, 2015 · I have inserted records in mysql DB, with json encoded data type, Now I have to make search within json encoded data, but i am not able to get proper data using following MySql query. 0, you can use json_table() to split the original arrayto rows, and then build new objects and aggregate them with json_arrayagg(). JSON_PRETTY() prints out a JSON value in a format that is easy to read. How to insert attribute to json string in mysql? 0. Partial Updates of JSON Values. Here, we're using the CAST function to turn the JSON extract into a CHAR(255) value that can be indexed and setting the Oct 18, 2018 · Extract JSON object's values as array from MySQL JSON column. Using this method we skip the intermediate column and put an index directly on the function itself. 3, “MySQL Handling of GROUP BY” . This work included the introduction of a JSON data type, virtual columns and a set of approximately 20 SQL functions that allow you to manipulate and search JSON data on the server side. 0. You can use json_object to get rows as JSON objects. You'll have to do that in the code which is fetching them. Table-per-concrete-type (TPC) inheritance mapping. Mar 9, 2023 · Developers can use JSON columns in much of the same way that they use other data types in MySQL, such as strings, numbers, and datetimes. WHERE JSON_VALID(`data`) = 0; This query will return all rows where the data column contains invalid JSON data. The complete syntax is shown here: JSON_VALUE(json_doc, path [RETURNING type] [on_empty] [on_error]) on_empty: Jul 8, 2024 · 3. Then, we convert it back into an object when we retrieve it from the database. {. Mapping to JSON Columns. 7. NESTED PATH '$. 0, there is no easy way to turn a JSON array to a recordset (ie, function JSON_TABLE() is not yet available). How to parse json column in MySQL Version < 5. Right now I have to fetch the value modify it and Update the table. So the result I am looking for like: 14. Conclusion. id as JSON), '$') But only when I change all id columns to type INT and change groups JSON value to [9001,9003], otherwise I get: Mar 14, 2022 · MySQL JSON column add new array as element. MySQL automatically validates JSON documents stored in JSON columns, ensuring data integrity. Persons. groups, CAST(g. Example: I have a permission column in the DB. In this example, json_col refers to the column that contains our JSON document. 1 JSON Function Reference 14. You can't cast correctly the data. keyname from some_database cross join json_table( json_keys(data->'$[0]'), '$[*]' columns ( keyname Feb 18, 2022 · I have mysql table like this which contain id and json type column: Shown values can be JSON values stored in string-datatype column, not in JSON-datatype column. Oct 22, 2021 · How can write queries in MySQL that can parse JSON data in a column? 9. SELECT `id` , `attribs_json` FROM `products` WHERE `attribs_json` REGEXP '"1":{"value":[^"3"$]' See Section 12. java. all() As you're searching an array at the top level, you do not need to give path. But I ran into a problem when it comes to updating a JSON type value. importJson () and util. This optimization can be performed for an update that meets the following Nov 4, 2015 · I am looking for a query with the native functions of SQL Server 2012 to extract the JSON from the column Value, and dynamically create columns, and I want to do this for different count of columns without hard coding the column names name, icon, twitter, facebook. You can specify the --result-format and the --sql parameters on the shell invocation to specify the result format as json and to use sql to interface with the server, like so: Mar 29, 2013 · [Additional info] In MySQL 5. CREATE TABLE `book` ( `id` mediumint(8) unsigned NOT NULL AUTO_INCREMENT, `title` varchar(200) NOT NULL, `tags` json DEFAULT NULL, // line 4 PRIMARY KEY (`id`) ) ENGINE=InnoDB; Dec 31, 2020 · Mysql version is 6. 4 Functions That Modify JSON Values. JSON columns are supported by several popular relational databases, including SQL Server, PostgreSQL, and MySQL. 2, you can use the JSON functions. The column holds valid JSON strings but some values are null. com Mar 8, 2016 · Indexing JSON. 17. user_group_id g. Jun 30, 2018 · In short the string values and key in a JSON array or Object needs to be double quoted thats the JSON standard. For this reason, we are going to add the following title virtual column on our book table: As you can see, the title column is mapped to the $. Querying and filtering the json could be painful, you can't use foreign keys, if you save ids from other tables, not so good if you make a mistake and delete al the column, you'll lost all the data instead of working column by column. This can be done using either of the functions detailed in this section, both of which take two arguments, a JSON schema, and a JSON document which is validated against the schema. This section introduces you to the JSON data type in MySQL and a brief overview of some useful JSON functions. IsMainAddress == true) . EXPLAIN works with SELECT , DELETE , INSERT , REPLACE, and UPDATE statements. MySQL supports validation of JSON documents against JSON schemas conforming to Draft 4 of the JSON Schema specification. 17 you can use value MEMBER OF(json_array), but using it in SQLAlchemy is a Mar 9, 2023 · Method 2: Function-based index. The JSON_ARRAYAGG() function is used to aggregate values into a JSON array. JSON data can be manipulated using SQL queries, including joins Jul 24, 2020 · COLUMNS () → list the columns you want to extract. In MySQL, you can use JSON path expressions to locate elements within a JSON document. Alternatively beginning from 8. session. Working with Json fields. filter(func. 21 supports JSON_VALUE function. The code is bellow. mysql> ALTER TABLE features CHANGE feature feature JSON NOT NULL; Query OK, 206560 rows affected (10. Get Json keys in a MySQL for a particular value. I can use "json_contains" or new "member of". You could use JSON_EXTRACT to get first value from your column and check for not null. More info and usage examples can be found in the MySQL documentation . See Multi-Valued Indexes. 7 a new data type for storing JSON data in MySQL tables has been added. type'); Note: In MariaDB, JSON functions work with all text data types (VARCHAR, TEXT etc. ). Extracts a value from a JSON document at the path given in the specified document, and returns the extracted value, optionally converting it to a desired type. 8 JSON Utility Functions. Mar 19, 2015 · I have a table in MySQL that has a column that store JSON objects. You can provide multiple path/value pairs if you need to update multiple values. 0. in MySQL that can parse JSON data in a column? 1. This optimization can be performed for an update that meets the following Mar 26, 2019 · MySQL's 5. I need to write a query that works with the JSON column type. 3. The details column is defined as a JSON data type, which means that it can store data in a flexible, hierarchical format: Jan 20, 2017 · 60. If you are running MySQL 8. You can see how much storage space a given JSON value takes up using JSON_STORAGE_SIZE() . 84 sec) Records: 206560 Duplicates: 0 Warnings: 0. Dec 2, 2017 · Using the mysql shell is the most straight forward solution to return rows as JSON from a sql formatted query. PATH '$. 0 supports one such function, JSON_TABLE() . 2 and later) supports JSON columns and MySQL JSON functions, including creation of an index on a column generated from a JSON column as a workaround for being unable to index a JSON column. 如果参数 json 不是有效的 JSON 文档，MySQL 将会给出错误。. Select(x => x. JSON_OBJECT () – Create JSON objects from key-pair values. Use the Json Prisma ORM field type to read, write, and perform basic filtering on JSON types in the underlying database. 您可以像普通的表一样使用 JSON_TABLE () 返回的表。. 4 Functions That Modify JSON Values 14. SELECT json_object('name', name, 'phone', phone) FROM person; This won't put them in an array, or put commas between them. See full list on sitepoint. implements AttributeConverter<String, Map<String, Object>>. Examples of possible rows, most properties in the JSON document have been removed for simplicity: Beginning with MySQL 8. Laravel, the popular PHP framework, provides a powerful ORM called Eloquent which includes handy methods to interact with JSON columns. Everything here is valid. 3 Functions That Search JSON Values 14. 9 + You can also just do this (shortcut for JSON_EXTRACT): SELECT * FROM users WHERE meta_data->"$. source table: 2 columns (title_english, title_german), CHAR target table: 1 column (titles), JSON and tried this: INSERT INTO movies (titles) SELECT 12. Jan 26, 2024 · Indexing JSON data can improve the performance of queries that search within JSON columns. group_name FROM users u LEFT JOIN user_group g on g. (Note that, as specified by the SQL standard, there is an implicit lateral join between the preceding table and the JSON_TABLE referring to this table. " 14. If you need to only check, whether the json key exists, you can use JSON_CONTAINS_PATH. 6 JSON Table Functions 14. I'm trying to create a table with json column. This includes: Mapping to SQL Server JSON Columns. user_group_id in some_json_function?(u. . For more information, see Section 14. MySQL convert multiple columns into JSON. 14. 4 supports one such function, JSON_TABLE() . Before, in MySQL 5. I want use SQL query. # import Python's JSON lib. 22: “pretty-printing” of JSON values in an easy-to-read format can be obtained using the JSON_PRETTY() function. Feb 22, 2019 · I'm trying to transfer data between tables. Sample Data Jul 25, 2022 · We want to push to a MySQL table structure as below: create table tblData( ID INT NOT NULL AUTO_INCREMENT, base_currency varchar(10) NOT NULL, data_date DATE NOT NULL, AED REAL(16,10) NOT NULL, AFN REAL(16,10) NOT NULL, AGN REAL(16,10) NOT NULL, 100 MORE COLUMNS, PRIMARY KEY (ID) ); Mar 15, 2016 · Step 2: ALTER TABLE. Also beginning with MySQL 5. In other words Jan 26, 2024 · Understanding JSON in MySQL. 6 JSON Table Functions. 7 simulate/emulate query involves using a number generator and multiple native MySQL's JSON functions. This means that it is necessary to convert the JSON file to sql insert, if there are several JSON objects then it is better to have only one call INSERT than multiple calls, ie for each object to call the function INSERT INTO. A secondary index may be created on one or more virtual columns or on a combination of virtual columns and regular columns or stored generated columns. This section contains information about JSON functions that convert JSON data to tabular data. What you're looking at is how mySQL is representing the result of a select. This section documents utility functions that act on JSON values, or strings that can be parsed as JSON values. Oct 24, 2018 · Besides using the command line, you can also use the available API to import JSON documents using the MySQL Shell, available for both JavaScript and Python mode, respectively: util. Here’s the syntax of the JSON_REMOVE() function: JSON_REMOVE(json_doc, path[, path] ) Code language: SQL (Structured Query Language) (sql) In this syntax: json_doc: This is the JSON document from which you want to remove elements. 8 JSON Utility Functions Section 1: Introduction to JSON in MySQL. JSON_TABLE() Syntax. Since then, it has been used as a way to escape rigid column definitions and store JSON documents of all shapes and sizes: audit logs, configuration settings, 3rd party payloads, user-defined fields, and more. Return value from JSON column after evaluating path and unquoting the result; equivalent to JSON_UNQUOTE (JSON_EXTRACT ()). 21. 'time' / 'pageTitle' → desired alias. When I try the following: alter table log modify request json it fails with the following error: Invalid JSON text: "The document is empty. 10 recently and I am liking the native JSON Data type a lot. You can use a JPA converter to map your Entity to the database. Creating an Index on a JSON Column CREATE INDEX idx_name ON users((profile->>'$. json_extract(goal_templates. Index key values are formed by concatenating The JSON_MERGE_PRESERVE() function merges two or more JSON documents and returns a merged JSON document while preserving the structure of the original JSON document. 16). Feb 16, 2023 · Instead of creating a separate column for each data element, a JSON column can store all the data in a single column. Using Map to map mysql JSON column type in domain (entity) class. Just add an annotation similar to this one to your params field: @Convert(converter = JpaConverterJson. Apr 23, 2023 · Here's an example of creating and querying more advanced nested JSON data in MySQL/MariaDB. JSON_ARRAY_APPEND( json_doc , path , val [, path , val] ) Appends values to the end of the indicated arrays within a JSON document and returns the result. 8. I need to get all products from "books" category. answered Jan 20, 2017 at 8:29. 2 Functions That Create JSON Values 14. class) and then create the class in a similar way (this converts a generic Object, you may want to specialize it): @Converter(autoApply = true) Nov 8, 2023 · EF Core 8 supports indexing in JSON arrays when executing queries. Syntax. 0 introduces partial update of JSON values, which is a nice performance improvement for applications that frequently update small portions of large JSON documents. 0 contains provider-agnostic support for JSON columns, with an implementation Nov 18, 2021 · Here's an example of extracting the key names as rows: select j. JSON_STORAGE_SIZE() and JSON_STORAGE_FREE() show, respectively, the amount of storage space used by a given JSON value and the Apr 3, 2018 · MySQL 8. In the following example, the User model has an optional Json field named extendedPetsData: id Int @id @default(autoincrement()) email String @unique. Introduction to MySQL JSON_ARRAYAGG () function. We'll discuss the syntax for creating JSON objects in a MySQL database, and Oct 2, 2016 · Some psuedo style SQL I'm thinking is below, though I still have no clue if this is possible, or what JSON functions mysql offers I would use to achieve this. How can I easily run queries that can have some of the JSON fields in the WHERE clause? EX: With a table named articles +--- JSON path is a way to specify and navigate through the elements in a JSON document. It will obviously be a great change in MySQL. id, json_arrayagg(json_object(. MySQL 8. Return value from JSON column after evaluating path; equivalent to JSON_EXTRACT (). Second - the amount of data stored in JSON columns might be huge. Mysql 8. So, for example, data may contain: [1,2,3,4,5] Now I want to select all rows which have a data column where one of its array elements is greater than 2. Secondary indexes that include virtual columns may be defined as UNIQUE . For example, the following query returns individuals whose first address is the main address in the database: var query = dbContext. 7+ Example of the column I need to get a value from below. 1. In MySQL, the JSON_TABLE() function extracts data from a specified JSON document and returns a relational table with the specified columns. It serves as a roadmap to locate specific pieces of data within a JSON structure. Sep 11, 2023 · In order to select invalid JSON data, you can use the following query: SELECT *. 100. Sep 16, 2018 · The JSON data source: This expression may refer to columns of preceding tables in the FROM list. @Converter. Summary. resources')) ->This results in a NULL return for all rows Jan 17, 2024 · The rise of NoSQL databases like MongoDB and features in SQL databases like PostgreSQL and MySQL’s JSON data type have made it common to store complex, schema-less data in a JSON column. Jul 24, 2018 · In MySQL, the JSON_SET() function inserts or updates values in a JSON document and returns the result. 17, MySQL supports validation of JSON documents against JSON schemas conforming to Draft 4 of the JSON Schema specification. See Section 14. page'→ If the child column you are calling is nested within another column, use this argument and designate MySQL NDB Cluster 7. So, one way or another, we need to manually iterate through the array to extract the relevant pieces of data (using JSON_EXTRACT() ). To summarize, the JSON data type in MySQL 8 provides powerful Apr 5, 2020 · So I'm experimenting with json column. In MySQL 5. MySQL JSON path syntax elements. We need a primary key column (or set of columns) so we can properly aggreate the generated rows, I assumed id: select. query(Story). 7, whenever you made a change to a stored JSON document, the full new JSON document would be written to the database, even if the update just changed a few Description. You could use JSON_UNQUOTE, or you could use this, which is a shortcut of JSON_EXTRACT & JSON_UNQUOTE: With MySQL pre-8. Here’s the syntax of the JSON_ARRAYAGG() function: JSON_ARRAYAGG(value) Code language: SQL (Structured Query Language) (sql) In this syntax: value: This value can be an expression or a column whose values you want to A maximum of 3 JSON columns per NDB table is supported. Merge JSON documents, preserving duplicate keys. JSON_TABLE( expr , path COLUMNS. MySQL Architecture : JSON Operator “->” :-> operator serves as an alias for the JSON_EXTRACT() function. name')); This will create an index named idx_name using the name value within the profile. Most aggregate functions can be used as window functions. When the server later must read a JSON value stored in this binary format, the value need not be parsed from a text I prefer to do this way: Creating converter (attribute converter) from Map to String and vice versa. template_data, group_concat('$. val1 will contain keys of the json data and val2 will contain values of respective keys I want to know how I can achieve this using MySQL query On your version this can be Jan 4, 2019 · 1. Use the JSON_EXTRACT() function to extract values from a JSON document and return the values that match the specified paths. Custom Reverse Engineering Templates for Database First. 4, the optimizer can perform a partial, in-place update of a JSON column instead of removing the old document and writing the new document in its entirety to the column. The most basic way to persist a JSON object in a relational database is to convert the object into a String before persisting it. Provided the data is all valid, it is now time to change the column definition: 1. 您可以 In MySQL 5. In MySQL 8, a JSON column is a column with the JSON data type, capable of storing structured JSON objects. Unless otherwise stated, aggregate functions ignore NULL values. Feb 15, 2018 · In MariaDB 10. The functions in this section modify JSON values and return the result. This optimization can be performed for an update that meets the following A secondary index defined on a virtual column is sometimes referred to as a “virtual index” . – informatik01 14. public class JsonToMapConverter. 8 in mid 2015 and has been adding improvements and new features ever since. user_groups) Oct 4, 2022 · MySQL gave us the JSON data type back in mid-2015 with the release of MySQL 5. Use column -> path operator whenever you use the JSON_EXTRACT() function with two arguments. SELECT u. mySQL 8. Basically, the first model you are using is called as document-based storage. EF Core 7. They listed some benefits. In this video, we'll explore the use cases for JSON columns, and take an in-depth look at how to use them within the MySQL schema. The JSON functionality has been well received Mar 1, 2018 · With mysql 5. The JSON_REMOVE() function is used to remove elements from a JSON document. user_id, u. Storing a text-string encoded representation of your data in a database completely destroys the point of using databases in the first place. JSON Data Type – Introduction to JSON data type in MySQL. first_name" = 'bob' You might notice your json data results are "quoted". ContactDetails. You provide the JSON document as the first argument, followed by the path to insert into, followed by the value to insert. Basically, in document based db's, you store data in json files and then you can query on these json files. In MySQL 8. The JSON type is simply an alias for LONGTEXT. ToListAsync(); The generated SQL query is as follows I'm trying to convert multiple columns from one table into single JSON in another table in mysql database (version 5. Beginning with MySQL 8. t. 5 Functions That Return JSON Value Attributes 14. 5. 2. Here is a solution that uses an inline query to generate a list of numbers ; another May 7, 2010 · I have started using MySQL 5. First table look like this CREATE TABLE `log_ Apr 24, 2023 · In MySQL, the only way to index a JSON path expression is to add a virtual column that mirrors the path expression in question and build an index on the virtual column. section_ids, X) == 1). 5 (7. 0 docs. Before delving into JSON_EXTRACT(), it’s essential to understand the JSON data type. Look at this two answers: Oct 11, 2022 · The RC2 release contains all features planned for the EF7 GA release. MySQL appending to a JSON field. You can work around this restriction by creating an index on a generated column that extracts a scalar value from the JSON column. ( column_list) [AS] alias) Extracts data from a JSON document and returns it as a relational table having the specified columns. As expected, whitespace information is lost in the conversion to a native type. EXPLAIN returns a row of information for each table used in the SELECT statement. import_json (). 返回值. Serialize and Deserialize Methods. For example, if you want to SELECT all donuts from your database, you do: SELECT * FROM t WHERE JSON_CONTAINS(attr, '"donut"', '$. nbr' AS UNSIGNED ARRAY)) ) I have column categories with JSON like this ["books", "clothes"]. name, g. JSON columns allow you to store and query JSON document data within MySQL in an optimized and scalable fashion. Oct 6, 2016 · MySQL 8. It lists the tables in the output in the order that MySQL would read them while processing the statement. Returns true (1) if first operand matches any element of JSON array passed as second operand, otherwise returns false (0) 8. title path expression on the Aug 1, 2020 · 3. Addresses[0]) . When used with two arguments ( a column identifier on the left and a JSON path on the right) , it evaluates against the JSON document (the column value). CREATE TABLE `person` ( `name` json DEFAULT NULL ); And Insert JSON data into it, INSERT INTO `person` (`name`) VALUES ('["name1", "name2", "name3"]'); Or Insert JSON data by Key:Value Aug 25, 2020 · I'm working with MySQL 8. JsonToMapConverted. The syntax is as follows: JSON_SET(json_doc, path, value[, path, value] ) Where json_doc is the original JSON document, and path is the location within the document where the new value should be set. The structure looks like this: Why is there an array of objects passed as the first parameter to JSON_CONTAINS when this array of objects is supposed to be a value in a column, and the query is supposed to find the object that has some matching parameter to the query. 0, the optimizer can perform a partial, in-place update of a JSON column instead of removing the old document and writing the new document in its entirety to the column. I expect it to be faster than JSON_EXTRACT. FROM `users`. ExecuteUpdate and ExecuteDelete (Bulk updates) Improved performance for SaveChanges. # likes integer values in WHERE, added == 1 just to be safe. You can do this more efficiently by NOT storing JSON in a single field but by creating a proper MySQL table with the JSON object's property names as field names. JSON_VALUE() – this function extracts a scalar value from JSON document. ru aa ld lf at ll cj cp oo sg