I would like to read the input table dynamically (column name and type) and define both in the RETURN statement. I have looked into the These queries can be DDL, DCL, and/or DML statements. @GustavoAdolfo Hang on, are you trying to coalesce the column name, i.e. gives the value of the column name specified. The information schema is the slow and sure way: it is standardized and largely portable to other databases that support it. "if the column name is null, use the column name col instead"? And it will keep working across major versions. Thanks, Jyoti There is a (not very elegant) way of achieving this result, by using a CASE:. for ex: let the variable be: recordvar recordvar. Unlike the static SQL statement, a dynamic SQL statements’ full text is unknown and can change between successive executions. If you found this article useful, make sure to check out the book Learning PostgreSQL 10, to learn the fundamentals of PostgreSQL 10. Anything that is not an actual column name is not returned. Note the format specifier %I , but the parameters $1 and $2 refer to values provided by the USING clause (not to function parameters! Is there any way in postgres to write a query to display the result in matrix form. Column names cannot be dynamic, so format the query (with format() for convenience) and use EXECUTE. Passing column names dynamically for a record variable in PostgreSQL (1) . Using PostgreSQL, column values from a table for 1st record are stored in a record variable. But there are ways around this limitation: Proof of concept. Does anyone know if there is one? my column name stored in another table. columnname. select ColumnName from LCompanySpecificColumns CSC where CSC.Label='Duration' and CSC.CompanyCode = 'DE' and CSC.TableName = 'LProducts' and … To adjust the values in columns like GDP or Dividends, you may automate this with a dynamic UPDATE similarly to the CREATE TABLE, if the columns that need the updates exist under identical names in all these tables (but that seems unlikely except if the schema was designed up-front with this constraint in mind). I've tried several ideas and searched all over looking for a solution. CREATE OR REPLACE FUNCTION update() RETURNS VOID AS $$ DECLARE cur SCROLL CURSOR FOR select * from my_tbl; r1 RECORD; BEGIN OPEN cur ; FOR counter IN 2000..2017 … Employee Name Client1 Client2 Client3 Client4 Emp1 100 102 90 23 Emp2 56 0 23 98 Emp3 34 45 76 0. I'm trying to write a function that uses dynamic column names to fetch the results within those columns. I did not mention that originally, just to keep the question short. If so, you have to do that outside the dynamic SQL string, in the format argument list. SQL Server definitely executed the empty string correctly. I want to display my dynamic column value in select query. However, views in the information schema often join in many tables from the system catalogs to meet a strictly standardized format - many of which are … But values are better provided with the USING clause. Assign to NEW by key in a Postgres trigger; How to set value of composite variable field using dynamic SQL All field names and types are the same, only geom is updated and clipped_geom_wkt is added. And dynamic field names are currently not possible, neither in SQL nor PL/pgSQL. ). It turns out I was using an incorrect query to build the dynamic SQL and as such built an empty string. 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