And dynamic field names are currently not possible, neither in SQL nor PL/pgSQL. Note that the reason I need this to occur, rather than simply hard coding the column names, is that the column names are user configurable. 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 … You do not have an easy way to just check a "variable column". Anything that is not an actual column name is not returned. Column names cannot be dynamic, so format the query (with format() for convenience) and use EXECUTE. Using PostgreSQL, column values from a table for 1st record are stored in a record variable. Is there any way in postgres to write a query to display the result in matrix form. columnname. gives the value of the column name specified. If you found this article useful, make sure to check out the book Learning PostgreSQL 10, to learn the fundamentals of PostgreSQL 10. my column name stored in another table. Employee Name Client1 Client2 Client3 Client4 Emp1 100 102 90 23 Emp2 56 0 23 98 Emp3 34 45 76 0. There is a (not very elegant) way of achieving this result, by using a CASE:. I did not mention that originally, just to keep the question short. I have written the following, however, the result is the name of the column, not the value within the column. The information schema is the slow and sure way: it is standardized and largely portable to other databases that support it. I would like to read the input table dynamically (column name and type) and define both in the RETURN statement. 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 … Thanks, Jyoti "if the column name is null, use the column name col instead"? SQL Server definitely executed the empty string correctly. for ex: let the variable be: recordvar recordvar. I'm trying to write a function that uses dynamic column names to fetch the results within those columns. These queries can be DDL, DCL, and/or DML statements. All field names and types are the same, only geom is updated and clipped_geom_wkt is added. Assign to NEW by key in a Postgres trigger; How to set value of composite variable field using dynamic SQL But there are ways around this limitation: Proof of concept. If so, you have to do that outside the dynamic SQL string, in the format argument list. postgresql dynamic-sql ado.net postgresql-9.3 pgadmin-1.18 I have looked into the Passing column names dynamically for a record variable in PostgreSQL (1) . The function works, but I need a different one for every table we want to produce the clipping. It turns out I was using an incorrect query to build the dynamic SQL and as such built an empty string. select ColumnName from LCompanySpecificColumns CSC where CSC.Label='Duration' and CSC.CompanyCode = 'DE' and CSC.TableName = 'LProducts' and … And it will keep working across major versions. I want to display my dynamic column value in select query. ). Note the format specifier %I , but the parameters $1 and $2 refer to values provided by the USING clause (not to function parameters! Unlike the static SQL statement, a dynamic SQL statements’ full text is unknown and can change between successive executions. But values are better provided with the USING clause. I've tried several ideas and searched all over looking for a solution. @GustavoAdolfo Hang on, are you trying to coalesce the column name, i.e. Here Client1, Client2... are the values from the database. 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