SQL – Page 448 – SQL Questions Answer

only displays the data contained in the list (is it possible to use the IN function or something)?

I have 4 tables. suppose the list table is a collection of unique data, then there are 3 other tables, each of which has data where not all of the values are in the list table. list aa bb cc dd ee ff gg hh ii jj group_1 aa cc ff hh group_2 aa bb cc ee jj group_3 aa

SQL with non-existing column in where cause can be executed

sql sql-server tsql

Here’s my SQL The issue is, the colA1 does not exist in TableB. So if I just run this Then SQL Server Management Studio will return an error: Invalid column name ‘colA1’. But if it is in the where cause, the first SQL can be executed as if where cause is always true. Answer Thats because SQL…

ORACLE SQL Combining many rows to one and sum a field

oracle sql

ORACLE SQL … I am trying to combine rows into one when they share the same contents in the following fields: In addition, I need the sum of the fields GL_ACCOUNT_BALANCE from all the respective previous rows to be totaled onto that one new row. I have written the following code. Answer From my point of …

Using Right() or Substr() in an UPDATE statement

oracle oracle11g sql

I have two tables : Second Table : I need to update the field HC_ID of Add_T Table and I use the following SQL statement: It doesn’t work. Also, I used the right() function and also got incorrect results. Could anyone say where is the mistake? Answer Looks like you need the last 4 characters of a string…

SQL – Remove Blanks/nulls rows and combine rows

sql sybase

I want to combine multiple rows into as few rows as possible by removing nulls Current: Table1 want: Table2: Answer For your sample data and results you can use:

How to limit STUFF function within CTE for removing character before recurring word

sql sql-server string-concatenation tsql

A follow up question for Replace a recurring word and the character before it Credit to @Larnu for the following code, how would this code be modified to not produce a null value if there is no longer a character before a recurring word, “[BACKSPACE]”. I believe the null value is occurring because…

How to go convert to CTE

common-table-expression sql union

I am a little confused out a CTE works. I need to convert my statement from a rollup with a UNION to a CTE… but the CTE is a bit confusing me. Any Ideas how to approach this? Answer You can express this using a CTE as:

SQL Join using a Junction Table not returning expected results

join sql sql-server tsql

I’m joining 3 tables in SQL Server for the purpose of mapping users to their managers. The purpose of the junction table is to map their full usernames to their network ID. Here’s the query: The first 3 columns appear as I’d expect, showing the Network ID, Full User Name and the Manager&#821…

Laravel Migration: Combine multiple values in a new colum

database-migration laravel migration postgresql sql

i’m trying to make a migration using Laravel. The idea is to get the values of columns ‘code’ and ‘id’ in different tables, and merge them into a column ‘name’ with ‘-‘ separators. So in part it is a SQL problem. Currently i’m trying something like t…