Category "sql"

SQL comparison matching ORDER BY

When one orders results by multiple columns the database has to do something to compare NULL values (e.g. order them first last). But how can I replicate that

How to include cascading choice list in different fields in REDCap

I have a scenario where I have to include choice lists of district/sector/cells/village (each of them is a field). I want to build a cascade, that way a choice

How to not return duplicates when comparing records in same table (A:B and B:A)

I have been stuck with this problem for a while now and can't resolve it, would greatly appreciate some guidance I am comparing records in a persons table to se

Effective query than AND operator in SQL

I am using Oracle database. The below query is not working as expected. select * from cst_cust_attributes where attribute_value='event' and attribute_value='

Why does a known type produce a runtime error but an inferred type produces a null value?

Let's take the following example from BigQuery, but it's the same across all other databases I've seen: with tbl as ( select [1,2,3] as arr, '{"IDS": [1

WP Slow queries / Duplicated queries - images

I have problems with slow and duplicated queries, I'll need assistance, I'm working on this for more than 10h+. Latest WP version - Latest Flatsome theme and ju

Trying to get only cells with certain initials but giving me syntax error? SQL

So my assignment question is to "Get a list of all books withdrawn by people with the initials 'B.W.'. Show a column for the first name, last name, initials, an

SQL Query for persons liking both fruits and vegetables [closed]

I have a situation I am trying to resolve. Might be simple but I can't figure it out. I have simplified my table that I am trying to pull data

WHERE clause with multiples conditions with values from the SELECT

I need to edit an old Access form. When a person enters information into a form field, a number associated to a name is found through a SQL SELECT statement. "S

is there a way to extract duplicated row value in sql as the key/grouping value?

I have following two tables users id | name 1 | john 2 | ada events id | content | userId 1 | 'applied' | 1 2 | 'interviewed| 1 What would be the

Simple spring data jpa transaction to small table on mysql database is hanging indefinitely

I have a spring data jpa query that reads a row from a mysql table with a pessimistic lock. In my environment, this table only contains one row so it should be

deleting all entries with FK when PK entry is deleted sequelize

I have a post and a notification model. notification has a onPostId FK. When a post is deleted how can I let sequelize know to delete all the notifications that

Multiple values inside SQL LIKE

This is working: SELECT * FROM table WHERE name LIKE '%ab_cd%' How to include '%ef_gh%' in a single/multiple statement? My try: SELECT * FROM table WHERE name

Accidentially deleted rows from pg_enum

Was looking to drop an enum and did it incorrectly by deleting the rows from the pg_enum table. I should have removed it with this: DROP TYPE IF EXISTS "enum_Or

Order of CAST() and COALESCE() matters in MariaDB

I have a strange problem: There is a price in a JSON column in a table and the following statements give different results while they should give the same thing

Can not safely replay call when trying to assign and use a variable in procedure

I am trying use the data from a column in one table as column aliases of another table. DECLARE var1 VARCHAR(20), var2 VARCHAR(20); BEGIN WITH TABLE1

How to map an entity with multiple levels of clearance/perks?

For example, say I have a clearance pass entity, with basic, intermediate and high level clearance. basic has clearances of x, intermediate has clearances of x

SQL - How to join tables with dates to get overall view of ALL dates

Using a bespoke ERP system with T & A built in. Table 1 has dates with holidays types i.e. bank holidays, user booked holidays - and a user id. Table 2 has

Inserting values from another table into a column where values are null

I have a table A with ID's only and another table B with two columns, ID and Product Number. The ID column in table B has nulls and Product Number has Product N

Return ids after upsert Slick

I have a query that upserts the data to the database via Slick. I'd like to return the ids of the entities that were inserted. How can I do this using Slick in