pull pairs from table with multiple requirements - sql

Question

I have a database of multiple employees and how many hours they work. Please see below.
So, every Time.Type that says Wellsite needs two rows. One for the Attribute: Reg Work Day and the next row showing the Attribute: Job ID. My code is showing all rows that have Job ID which is what I need to get rid of unless they have the Reg Work Day above it that meets my condition (see below). Also, I have a row of On Office Time Type that is fine and I'm not having any issues with.
I've been assisted to do this, but for one employee. Now I need my data to work through this process for multiple employees.
The condition I need to be true is when a row has a Time.Type of "Wellsite/Job/Vessel" and an Attribute that says "Regular Work Day" the "Hourly Value" needs to be >15. Also, I need the row right below it which has an Attribute of "Job ID" with a job number under the "value" tab too. From what I have learned is that the Date column can be used to keep the rows together, but i just need it to work for the certain employees/days rather than everything.
The table below shows what I have and what I want it to do is below this table..
CREATE TABLE mytable(
Complete_Name VARCHAR(9) NOT NULL PRIMARY KEY
,Day_of_Week VARCHAR(7) NOT NULL
,Date VARCHAR(11) NOT NULL
,Time_Type VARCHAR(19) NOT NULL
,Attribute VARCHAR(16) NOT NULL
,Value VARCHAR(28) NOT NULL
,Hourly_value_in_decimals NUMERIC(5,2)
);
INSERT INTO mytable(Complete_Name,Day_of_Week,Date,Time_Type,Attribute,Value,Hourly_value_in_decimals) VALUES ('EmployeeA','Tuesday','20-Oct-2015','Wellsite/Job/Vessel','Regular Work Day','RGWD - Regular Work Day (BR)',16.75);
INSERT INTO mytable(Complete_Name,Day_of_Week,Date,Time_Type,Attribute,Value,Hourly_value_in_decimals) VALUES ('EmployeeA','Tuesday','20-Oct-2015','Wellsite/Job/Vessel','Job ID','2213840',NULL);
INSERT INTO mytable(Complete_Name,Day_of_Week,Date,Time_Type,Attribute,Value,Hourly_value_in_decimals) VALUES ('EmployeeB','Tuesday','20-Oct-15','Wellsite/Job/Vessel','Regular Work Day','RGWD - Regular Work Day (BR)',2.25);
INSERT INTO mytable(Complete_Name,Day_of_Week,Date,Time_Type,Attribute,Value,Hourly_value_in_decimals) VALUES ('EmployeeB','Tuesday','20-Oct-15','Wellsite/Job/Vessel','Job ID','2213840',NULL);
Table:
Complete_Name Day_of_Week Date Time_Type Attribute Value Hourly_value_in_decimals
------------- ----------- ----------- ------------------- ---------------- ---------------------------- ---------------------------------------
EmployeeA Tuesday 20-Oct-2015 Wellsite/Job/Vessel Regular Work Day RGWD - Regular Work Day (BR) 16.75
EmployeeA Tuesday 20-Oct-2015 Wellsite/Job/Vessel Job ID 2213840 NULL
EmployeeB Tuesday 20-Oct-15 Wellsite/Job/Vessel Regular Work Day RGWD - Regular Work Day (BR) 2.25
EmployeeB Tuesday 20-Oct-15 Wellsite/Job/Vessel Job ID 2213840 NULL
What I want to see is...
CREATE TABLE mytable(
Complete_Name VARCHAR(9) NOT NULL PRIMARY KEY
,Day_of_Week VARCHAR(7) NOT NULL
,Date VARCHAR(11) NOT NULL
,Time_Type VARCHAR(19) NOT NULL
,Attribute VARCHAR(16) NOT NULL
,Value VARCHAR(28) NOT NULL
,Hourly_value_in_decimals NUMERIC(5,2)
);
INSERT INTO mytable(Complete_Name,Day_of_Week,Date,Time_Type,Attribute,Value,Hourly_value_in_decimals) VALUES ('EmployeeA','Tuesday','20-Oct-2015','Wellsite/Job/Vessel','Regular Work Day','RGWD - Regular Work Day (BR)',16.75);
INSERT INTO mytable(Complete_Name,Day_of_Week,Date,Time_Type,Attribute,Value,Hourly_value_in_decimals) VALUES ('EmployeeA','Tuesday','20-Oct-2015','Wellsite/Job/Vessel','Job ID','2213840',NULL);
Table:
Complete_Name Day_of_Week Date Time_Type Attribute Value Hourly_value_in_decimals
------------- ----------- ----------- ------------------- ---------------- ---------------------------- ---------------------------------------
EmployeeA Tuesday 20-Oct-2015 Wellsite/Job/Vessel Regular Work Day RGWD - Regular Work Day (BR) 16.75
EmployeeA Tuesday 20-Oct-2015 Wellsite/Job/Vessel Job ID 2213840 NULL

Answer 1

So building on my prior answer you need to pull for different employees based on different criteria.
For example employee name Hogan might want days > 15 while employee named NotHogan might want days > 24.
To do this you put the criteria in a table (in the example below I build the table dynamically) and then join to that table to get the dates and names required.
Then I join to this result to get the final data.
SELECT *
FROM ROSTER
JOIN (
-- A list of dates and users we want to select
SELECT `Date`, Name
FROM ROSTER
JOIN (
-- Innermost table, our criteria, this can be an actual table in your db
SELECT 'Hogan' as N, 15 as C
UNION ALL
SELECT 'NotHogan' as N, 24 as C
) Criteria ON
Criteria.N = ROSTER.Name AND
ROSTER.`Hourly Value` > Criteria.C AND
Attribute = 'Reg Work Day'
) sub ON ROSTER.`Date` = sub.`Date` and ROSTER.Name = Sub.Name