Web7 Apr 2024 · Solution 1: Just call where () in the if statement, before calling get (). $this->db->select ('name'); if(isset($name)) { //add where clause here, to select specific name $this->db->where ('name', $name); } $query = $this->db->get ('user'); $result_array = $query->result_array (); Copy Documentation: Web13 Dec 2024 · Then use this grouping column as a parent group to your current crosstab group (lookup table). then you can add a total column for this parent group and it will get …
Dynamically generate columns for crosstab in postgresql
Web18 Oct 2000 · Let's proceed to the stored procedure's first step—generating the beginning of the dynamic SQL string, as Listing 4 shows. Step 1 starts the SQL string that will … Websql postgresql SQL：将行转换为列以获得可变行数,sql,postgresql,pivot,crosstab,Sql,Postgresql,Pivot,Crosstab,我有两个表，其简化结构如下所示： RESPONSES id created ACCESSORY VALUES id response_id sensor_id value 我想创建一个视图，将给定响应的所有附件值在一段时间内展平为一行，并在response.created上 … street map of bar harbor maine
sql - 具有通用列标题的交叉表查询 - Crosstab query with generic column …
Web16 Oct 2012 · Pivoting (or producing a "cross-tab") is a common reporting requirement - data is stored in columns and you need to present it in rows. This was a nice feature that was … Web22 Jul 2011 · The one and only way to create a crosstab query with dynamic columns is to determine the columns at execution time and assemble a dynamic SQL command to … Web30 Jun 2013 · It may be better to do the pivoting client-side, because it is not easily done in SQL. Since a result set has a fixed structure, you need to use dynamic SQL, and dynamic SQL is advanced feature which is not for newcomers. If you are using Reporting Services, I am told that there is a tablix with dynamic pivot. street map of barmouth