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