Sql dynamic column names in where clause. This one covers building a dynamic where clause.

Sql dynamic column names in where clause. This one covers building a dynamic where clause.

Sql dynamic column names in where clause. Jun 30, 2022 · I want to name columns in above query dynamically as follows:- With plain SQL it's not possible and don't make much sense; how should the client consuming the data should guess the column name? The object is to dynamically assemble a statement from a variable number of filters in the WHERE clause. And the really neat part is that you don't actually need to write dynamic SQL. Build a VARCHAR string for your query based on the dynamic column names you are getting from your first query, then EXEC on the string you have created. Jan 11, 2018 · Here the column selection itself is dynamic as well as values need to be mapped correctly to the right column for filtering the data. com Jul 23, 2025 · SQL String is the string that contains the SQL Statement using variables to represent dynamic elements like table names, column names, or conditions in the 'WHERE' clause. put_line (v_dept); end; for deptId=100, there is no data in the department table. This one covers building a dynamic where clause. Meaning with this answer you can dynamically calculate the column names instead of just reading in raw values. . Jul 3, 2018 · I've got a table that holds columns named "Day1" through to "Day31". However, if I execute the query, it output as 1. Dec 27, 2014 · It uses one form of dynamic SQL for most of it and another form for passing the impassible database name for the FROM clause. It turns out I was using an incorrect query to build the dynamic SQL and as such built an empty string. See full list on mitchelsellers. Aug 4, 2015 · The answer in that question will work - but you have to add the case syntax to your query with appropriate modifications. It looks like your column names are finite ('ColName1','ColName2' and 'ColName3') - so the approach could allow you to avoid dynamic sql. But, if the same query is replaced as 'select 1 Jun 11, 2018 · You can use dynamic SQL to execute this via the EXEC command. Thanks in advance!! Looks like dynamic SQL. This is soooo much simpler. SQL Server definitely executed the empty string correctly. SQL> create type qry_params as table of qry_param 2 / Type created. You have not provided enough information on exactly what columns you need in your WHERE clause, or how you determine which ones, but dynamic SQL seems to be what you need here. Instead of hardcoding conditions into your SQL query, you can dynamically adjust them to meet varying requirements. Now two way street here, please. Jan 25, 2016 · Yours is the only solution that doesn't rely on quote name. I'm not sure where recursion fits into all this, so I will just use an array to handle the parameters: SQL> create type qry_param as object 2 (col_name varchar2(30) 3 , col_value varchar(20)) 4 / Type created. declare v_col varchar2 (100) := 'deptId'; v_dept varchar2 (100); begin select 1 into v_dept from department where v_col=100; dbms_output. Jan 6, 2025 · A dynamic WHERE clause allows you to construct and modify query conditions based on user input or program logic. 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. SQL> This Jan 14, 2001 · Garth Wells passed on another article to us. Is there a way I can dynamically choose the correct column to put in a WHERE clause? I can get the current day, that's no pro Jul 15, 2014 · All, I have to pass the column name in the where clause in the below sql query. ienx bgxxli cjlosr usc svwdkl jebj mmtny rvwf uqkma zsyap