Here is the correct script: CREATE OR REPLACE FUNCTION public."FncGetMenus" (ĬOALESCE(m. I mistook PostgreSQL Array of Json with Json Array. Array Functions arrayposition ( anyarray, anyelement, int ) int returns the subscript of the first occurrence of the second argument in the. INSERT INTO "TabMenuSistema" ("CodMenu", "DesMenu", "CodMenuPai") VALUES(10, 'Locais', 2) INSERT INTO "TabMenuSistema" ("CodMenu", "DesMenu") VALUES(9, 'Relatórios') INSERT INTO "TabMenuSistema" ("CodMenu", "DesMenu") VALUES(8, 'Gerencial') fromMap() and a method called toMap() since to save data to the SQLite. INSERT INTO "TabMenuSistema" ("CodMenu", "DesMenu") VALUES(7, 'Financeiro') In PostgreSQL I would store an array of terms and use GIN indexes to solve this. INSERT INTO "TabMenuSistema" ("CodMenu", "DesMenu") VALUES(6, 'Administrativo') To understand the ARRAYAGG function, consider the table. INSERT INTO "TabMenuSistema" ("CodMenu", "DesMenu") VALUES(4, 'Saídas') This function is used to append an element to the end of an array. PostgreSQL ARRAYAGG function is used to concatenate the input values including null into an array. INSERT INTO "TabMenuSistema" ("CodMenu", "DesMenu") VALUES(3, 'Entradas') Step 2 : Create a function using PLTCL to declare the Global Associative Array and set a value. postgres> CREATE EXTENSION pltcl CREATE EXTENSION. INSERT INTO "TabMenuSistema" ("CodMenu", "DesMenu") VALUES(2, 'Cadastros') To achieve the functionality of global associative arrays, let us embed the same code in PLTCL as seen in the following steps. INSERT INTO "TabMenuSistema" ("CodMenu", "DesMenu") VALUES(1, 'Configurações') This is not the best method, however, because it can be too repetitive for large arrays. "IndPermiteRelatorio" BOOLEAN DEFAULT false NOT NULL So, here goes the DDL and DML scripts to the table in question. I tried to supply the Raise Notice text and the output of the function, but it was not possible due to code format restrictions. Probably there is a less verbose and faster way to achieve this. The content is escaped, but I suppose that it has to do with the second problem.Ĭouldn´t find a way to return an empty Jsonb Array, insted of null. The output is an Object and not an Array:Īll the result inner elements that should be Objects, seem to have been appended as string Raise notice 'result: %', vJsonArrayReturn VJsonArrayReturn = vJsonArrayReturn || vJsonMenu Append the new JsonMenu with it´s children to the result array Raise notice 'json vJsonMenu: %', vJsonMenu First, it will return an empty (zero-element) array rather than NULL when the input string is of zero length. VJsonMenu = vJsonRecord || vJsonObjectSubMenus There are two differences in the behavior of stringtoarray from pre-9.1 versions of PostgreSQL. Include the SubMenus object to a new JsonObject This method accepts an optional array of bindings as its second argument. Raise notice 'json object submenu: %', vJsonObjectSubMenus You may use the table method provided by the DB facade to begin a query. fourth problem: Couldnt find a way to return an empty Jsonb Array, insted of null. The content is escaped, but I suppose that it has to do with the second problem. Raise notice 'json record: %', vJsonRecord The output is an Object and not an Array: Second problem: All the result inner elements that should be Objects, seem to have been appended as string. Json_build_object('SubMenus', vJsonArraySubMenus) Array Functions See also Section 9.18 (page 274) about the aggregate function arrayagg for use with arrays. Create an Object containing the submenus This function is used to append an element to the end of an array. CREATE OR REPLACE FUNCTION public."FncGetMenus" (ĬOALESCE(m."CodMenuPai", 0) = "eCodMenuPai" Therefore, we can create custom types to map a PostgreSQL array with Hibernate for storing/fetching data.I need to return a JsonB Array, representing the hierarchical structure of menus and submenus of my application. Hibernate supports custom types to map a user-defined type into SQL queries.
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