Tag: select

Are postgresql `SELECT DISTINCT` queries deterministic?

deterministic distinct postgresql select sql

Are Postgres SELECT DISTINCT queries deterministic? Will SELECT DISTINCT somecolumn FROM sometable return the same result (including order) if the table (and entire database) goes unchanged? In the Select Query Documentation the Description section notes: If the ORDER BY clause is specified, the returned rows…

behavior of DBMS after executing where clause

having-clause mysql select sql where-clause

in a select query when some records doesn’t satisfy the condition in where clause, they will be omitted for executing subsequent clauses or not? for example consider we have a group by clause and after that, we have a condition in having clause on max(someThing). if a record has the maximum value of pro…

How to make it to select from 1st day every month

date mysql php select sql

Hello there I have a question so I have a goal mysqli query and it sum the price and select by interval 1 month I try few things to made it to select only from 1st day of the month but I have no idea …

How to select from string array added in SQL column?

arrays select sql sql-like where-clause

Below is my table, tried its not working for i want to select rows by passing colPar as ‘param1,param2’ so it will result me all the records containing param1 and param2 in colParam Answer This quiet tricky. to Return all matching values. Output:

SQL query to select previous 14 months where add amount ‘0’ if any month is missing

date mysql select sql

I have create this query to select the date, amount for previous 14 months, In this case the month is missing if no record is present for that month, Please suggest me a solution to add zero and month …

SQL: INSERT multiple different hardcoded values in one column

select sql sql-insert sql-server tsql

I could not find a solution for this yet. I want to insert multiple rows with 2 or more different hardcoded values, but also with data that I get from another table. Example: I want to add 2 items into a table for a user that has the ID = ‘0’ in another table without running 2 queries. This is

How to Find Unique Rows without GroupBy, Distinct

select sql sql-server subquery

I have a SQL field that I only want to appear in a field in my sql query results depending on the value of FamilyType. So when the Family Type is 3B then I want FamilyID to appear. I do not want to have duplicate rows (without using distinct or group by or where clause = 3B). These are my

How to merge rows into one row with separator

select sql sql-server

I need merge rows into one row for summary of calculation (SQL Server 2014). My SQL query is: Result of this query is: I would like to have this result: When add new currency (x), the result of new currency must be appended: Can somebody please help me with this topic? Many thanks Answer Something like this s…