Skip to content
Advertisement

Tag: sql

LEFT JOIN to return only first row

I am making a join with two tables, tab_usuarios (users) and tab_enderecos (address). tab_usuarios structure: id_usuario nome usuario 1 Administrador admin 2 Novo Usuário teste 3 Joao Silva jao tab_enderecos structure: id_endereco id_usuario cidade uf 2 1 cidade SP 20 2 Lorena SP 22 2 Lorena SP 24 3 Campinas SP 28 4 Lorena SP I have this simple query

From keyword not found where expected error in oracle

Need to create a temporary table employee by inserting values from already created table person which belongs to people database but getting error from keyword not found where expected Answer You’d then use CTAS (Create Table As Select), not an invalid INTO clause; it is used for different purposes. Based on comment you posted, there are several options you might

Need to get appropriate/expected row number in Oracle PLSQL

Getting the following output when i use the below query But the expected output should be as below (Refer RowNumber column) Answer First find “groups” each of those rows belongs to (partitioned by refnum and name) (that’s what the temp CTE does), and then apply dense_rank to fetch the final result. Sample data (simplified, as I don’t have your tables):

Change Two Rows Into Two Columns

Oracle newbie here just trying to learn something. I have a query that returns two rows per ID: Current Output Instead of two rows, how can I put the two varying values in the B1_CHECKLIST_COMMENT column into two separate columns? Visually, here’s what I’m looking to achieve: Desired Output I’m using Oracle version 12.1. Answer You can use PIVOT: Or

selecting all rows except top row using offset in MySQL

How can I use offset clause to get all rows except the first row. I am using query like But this is not working in MySQL. what am I doing wrong here? Answer Sadly in MySQL OFFSET only works together with the LIMIT clause. So you need to use or I have chosen that limit number from a different question

Continuous subset and ranking using sql

I have a dataset like below: Now, I need the output as below: For this purpose, I wrote a query but it is not giving me the desired sequence. My query is as below: It generates the output as below: But in the rank section I need something as below: So, what exactly am I doing wrong here? Here are

Advertisement