The simplest way to execute an arbitrary SQL statement is to use the command EXECUTE IMMEDIATE. For example, in the car portal application, the search functionality is needed to get accounts using the dynamic predicate, as follows: CREATE OR REPLACE FUNCTION car_portal_app.get_account (predicate TEXT) RETURNS SETOF car_portal_app.account AS $$ BEGIN RETURN QUERY EXECUTE 'SELECT * … This means you either won't be able to use privileged objects at all, or you … To return a table from the function, you use RETURNS TABLE syntax and specify the columns of the table. Each column is separated by a comma (, ). In the function, we return a query that is a result of a SELECT statement. Notice that the columns in the SELECT statement must match with the columns of the table that we want to return. Using the example for the above link, can the following be rewritten using RETURNS TABLE: CREATE TABLE foo (fooid int, foosubid int, fooname text); CREATE FUNCTION getfoo(int) RETURNS SETOF foo AS $$ SELECT * FROM foo WHERE fooid = $1; $$ LANGUAGE SQL; So far, I tried to use RETURNS TABLE (foo. Also a prepared query can be repeateadly executed with different parameters, and cannot return a different structure across executions. implement Dynamic SQL in PostgreSQL PostgreSQL This is exemplary example of … As the query will be taken as a parameter, I cannot have a define a type or column types to return. My goal is to create a function, or stored procedure, which generates a dynamic select which is returned by the function or stored procedure. In practice, you often process each individual row before appending it in the function’s result set. The docs show no … Table F.30 shows the functions provided by the tablefunc module. Postgresql for Loop Select Into. Example 4: Using dynamic SQL inside PostgreSQL function. SQL Server function return table Postgresql return results of dynamic SQL. How would I go about this? Postgres: dynamic functions execution | by Valery Yakovlev If the a_dynamic_table_name could be specified as a function, it would be. This works as of 8.4: CREATE OR REPLACE FUNCTION dynamic_trigger() RETURNS trigger LANGUAGE plpgsql AS $$ DECLARE ri RECORD; t TEXT; BEGIN RAISE NOTICE E'\n Operation: %\n Schema: %\n Table: %', TG_OP, TG_TABLE_SCHEMA, TG_TABLE_NAME; FOR ri IN SELECT ordinal_position, column_name, data_type FROM information_schema.columns WHERE … PostgreSQL This variant is implemented in the dynamic_pivot() function below. In such cases, dynamic SQL is very convenient. Return more than one row of data from PL/pgSQL functions A temporary table, as the name implies, is a short-lived table that exists for the duration of a database session. The Select into statement in PostgreSQL is used to select data from the database and assign it to the variable. Example 2: Using Multiple String in generating Dynamic SQL. The following example illustrates the idea. postgresql function return dynamic table The function would build a dynamic SQL query and instantiate a cursor over it. Using RETURNS TABLE vs. OUT parameters - Postgres OnLine Executing Statements without a Result Set. This works as of 8.4: CREATE OR REPLACE FUNCTION dynamic_trigger() RETURNS trigger LANGUAGE plpgsql AS $$ DECLARE ri RECORD; t TEXT; BEGIN RAISE NOTICE E'\n Operation: %\n Schema: %\n Table: %', TG_OP, TG_TABLE_SCHEMA, TG_TABLE_NAME; FOR ri IN SELECT ordinal_position, column_name, data_type FROM information_schema.columns WHERE …

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