If you use procedure create_view_on_path then the PATH argument you provide must be a simple SQL/JSON path expression (no filter expression), possibly with relaxation (implicit array wrapping and unwrapping), but with no array steps and no function step.īelow is my test case (from Oracle 12.2), when i say " $.ContactDetails. PL/SQL procedure successfully select json_query( dataguide,'$' pretty ) Index exec dbms_stats.gather_table_stats(user,'T',cascade=>true) View the job description, responsibilities and qualifications for this position. it works with some decent amount of data in create table t(x varchar2(40) constraint t_chkĬommit create search index t_idx on t(x) Apply for the Job in PL/SQL Developer at Miami, FL. Select json_query( dataguide ,'$' pretty ) Table insert into t values(1,'') Įxec dbms_stats.gather_table_stats(user,'T',cascade=>true) If you're still on 12.1 you'll have to roll your create table t(x int,y varchar2(50) ) So you can see the attributes and their values in regular SQL :)īut as I say, this is all 12.2 functionality. Just pass your JSON document to this to get it:Įven better, you can use the data guide to expose non-array values as virtual columns in the source table. Mostly all NoSQL databases like MongoDB, CouchDB, etc. JSONQUERY is a function in Oracle PL/SQL that is used to extract a JSON value from a JSON document. It is mainly used in storing and transporting data. There's a new function, json_dataguide, which returns the "schema" of a JSON document. JSON stands for Javascript Object Notation. One of the features of PL/SQL is the ability to handle JSON data using the JSONVALUE function. Luckily there is another way: JSON Data Guide. Oracle PL/SQL is a powerful programming language used for managing and querying data stored in Oracle databases. But the code is a little kludgy!ĭept_json varchar2(1000) check (dept_json is json)Īrrkeys := treat ( elem as json_object_t ).get_keys If you have objects nested within arrays or other objects you can pull the attributes out. The data needs to be stored in JSON Format. Basically, I want to select data from a table and save the output as a CLOB in another table. Such expressions can include PL/SQL function calls and columns specified by a SQL WITH clause. AS JSON) lets you specify that the return value from a given SQL expression is to be treated as JSON data. Which, as you may guess, returns the keys!īut this only returns the top-level attributes. I would like to generate JSON output from an SQL Statement in PL/SQL on 11g, unfortunately SQLCL is not an option. You can specify that a given SQL expression returns JSON data, using TREAT (. PL/SQL comes with JSON object types which include a get_keys method.
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