I was trying to load some data from the oracle database, During the proceeding every line of code was fine until I try to run the last line: df<- sqlQuery(sql_connection,sql_statement,stringsAsFactors=0), an error in the title occurred. So here is the basic structure of my code: since I’m new to R, I…
all combination of two symbol with nth length
I need a solution using only oracle sql query Input two static symbol ‘A’ and ‘B’ n – number Output if N=3 must give all combination using this symbols AAA AAB ABA BAA … Output if N=4 must give all combination using this symbols AAAA AAAB AABA ABAA … Answer Old style …
How to insert into a SQL table column using SELECT query?
I have tables A, B, and C. I want to insert UserRoleName values in table C, into UserRoleName column in table A for the corresponding UserId. UserId in Table A, is a foreign key from Table B. UserRoleId is a foreign key in table B from table C. How can I do that? I tried using this query, But this
Find rows that exist in one table and not the other
CREATE TABLE final( FileID int, rate varchar(50), groupID varchar(50), destination varchar(50), Rate int, bDate date, eDate date, billID varchar(50) NULL ); CREATE TABLE temp( …
How to stop class database file getting created multiple times when using flutter_moor?
Whenever I am adding a new row to my database in my flutter app, I am getting this error : WARNING (moor): It looks like you’ve created the database classAppDatabase multiple times. When these two databases use the same QueryExecutor, race conditions will ocur and might corrupt the database. I read diff…
Append data from one table to another table
I have a Destination table with 3 columns, ID, Name, Source. I have 10+ Source tables, each with multiple columns, but I only require the ID, Name, and the table name itself to be appended into Destination table. Do note the naming of the column names are different in each table, but the required ID and Name …
How do I write my SQL Code in MS Access SQL?
Table Name: Records ID Date Time Status BoxType Material Rack EmployeeNr Transaction 1 25-05-2020 13:11:12 70 36757 4 4 188 2 2 25-05-2020 13:12:40 71 31178 2 5 188 2 3 25-05-2020 13:13:31 71 31178 2 5 188 102 4 27-05-2020 13:14:14 71 38444 3 2 181 3 5 27-05-2020 13:14:15 71 38444 3 2 181 3 6 27-05-2020 13:14…
Postgresql create trigger for integrity constraint in insert / update
I have these tables on a database on Postgresql: I want to be sure that when I insert / update a value in manager_employee table both manager_id and employee_id belong to the same company, same company_id. I think I have to use a trigger to ensure this condition, how can I create it? Thanks Answer You can do …
How can I generate a random timestamp appended to getdate() in SQL Server?
The following sql select generates the current date and time: select Getdate() AS DueDate which looks like: 2021-02-06 10:16:35.340 I’d like to use getdate() (or an equivalent alternative) to …
Joining two JSON objects in Snowflake
What’s up, I have two JSON objects, generated from the same Snowflake table (Table 1 here). I want to join/merge them on their “_id” field, in order to produce this nested json kind of structure. How can I do this? I tried aliasing them and using SELECT * from dc JOIN rs ON rs.:_id = dc:_id …