I want to join two tables, selecting the most recent rows for an ID value present in table 1. i.e. For each ID value in table 1, only return the most recently added row for an ID value. For example, table 1 looks something like this: So if the same ID value is found twice in this table, only return
Tag: sql
Merge statement?
I am more of beginner with sql but would like some help on which statement would be best to use for my query. So I have an app that has test data, because the score could be 90 or be 85.6 the values are in different columns – former in int.value, latter in double.value. I need to merge the two
sqlite3.OperationalError: ambiguous column name: views
Help! I try to update the select statement but it seems to not work here So, let me introduced my table Artists and Songs Note:I already inserted these table yet and, this is where I update SELECT statement and cause me an error This is the error So I decided to change from views to Songs.views and, it still …
Fetch the difference in result in Oracle
I have two tables table_one and table_two. table_one has incomplete records while table_two has all records I want to fetch the difference in each date id_date, however i cant get results in a date …
Create date table of every second between two dates
I need to create a table of every second between two input dates eg between 01/01/2015 00:00:01 and 05/01/2016 00:00:00 So a 3m row expected output that looks like this: Does this need a CLR? …
Error in My SQL Syntax for trigger creation or execution
value_table id auto increment not null unique primary_object_id user_id value group_table id auto increment not null unique primary_object_id 1 2 3 4 5 6 7 I have two tables one stores values(…
sort table from another table with union and join
Given the following tables, I would like the final output to be sorted by department weight and also staff weight staff +—–+——–+—————–+————-+——–+ | uid | name | …
How can I select a nested json object with a group by clause in oracle sql from a table?
Let’s say I have the following statement: WITH t AS ( SELECT ‘A’ AS level_0, ‘A1’ AS level_1_1, ‘object_1’ AS level_1_2, ‘A11’ AS level_2_1, ‘B11’ AS level_2_2 FROM dual UNION ALL SELECT ‘A’ AS …
How to deal with ambiguous column reference in sql column name reference?
I have some code: I then try but I get an error Error in SQL statement: AnalysisException: Reference ‘A.CDE_WR’ is ambiguous, could be: A.CDE_WR, A.CDE_WR.; line 6 pos 4 in databricks. How can I deal with this? Answer This query: is using SELECT *. The * is shorthand for all columns from both tabl…
How to use case to construct a conditional update
I have to write an update query. If the special_member account is not cancelled then in the where clause I have to use this condition by adding a grace period of 15 days to the expiry date and compare …