Fleet Analytics
Definitions and Acronyms
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Data Manipulation Languages (DML)
Data Definition Languages (DDL)
Structured Query Language (SQL)
o Transact Structured Query Language (T-SQL) – Microsoft
o Procedure Language/Structured Query Language (PL/SQL) – Oracle
Schema vs. Logins
Aggregate Functions
Deadlock
Cartesian Product/Cross-Join
Sub Query
Syntax
o Modifier o Expression o Clauses o Union, Join o Variable -
Additional Syntax
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Wildcards and Patterns
o %
o _
o []
o [^]
o Between
Some Aggregates and Analytical
o COUNT - Number of items in a group
o SUM - Sum of column or expression from items in a group
o AVG - Average of values in a group
o MIN - Minimum value
o MAX - Maximum value
VAR - Statistical variance of all values
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Syntax Patterns
Basic
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Select <column> from faster.<table>
o SELECT EHKey FROM faster.EHeader
Select <columns> from faster.<table> where <expression>
o SELECT EHUid, EHCompany, EHKey FROM faster.EHeader WHERE EHStatus
= 'A'
Select <modifier> <columns> from faster.<table> where <expression> order by
<column>
o SELECT DISTINCT EHCompany, EHKey, EHDateCreated FROM
faster.EHeader WHERE EHStatus = 'A' ORDER BY EHDateCreated
Ranges and Wildcards
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Using Wildcards and Patterns ‘Like’ Clause
o % - Percent
 SELECT <columns> FROM <table> WHERE <column> LIKE ‘%’
o _ - Underscore
 SELECT <columns> FROM <table> WHERE <column> LIKE ’1_00’
o [ ] Square Brackets
 SELECT <columns> FROM <table> WHERE <column> LIKE ’10[5-9]0’
OR <Column> LIKE ‘100[24680]’
o [^] – Square Brackets with Caret
 SELECT <columns> FROM <table> WHERE <column> LIKE ’100[1-4]’
Ranges of data using the ‘Between’ Clause
o SELECT <columns> FROM <table> WHERE <column> BETWEEN <value>
AND <value>
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Joins and Unions – Note in graphical examples that the black is the included data and the white
is the omitted data.
Join Types:
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Left or Left Outer and Right or Right Outer
Inner
Outer
Full Outer
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Using a left outer join returns a complete set of records from Table A, with the
matching records (where available) in Table B. If there is no match, the right side will
contain null.
o SELECT <column> FROM <Table A> LEFT OUTER JOIN < Table B> ON (
<Table A>.<column> = <Table B.<column>)
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Using a right outer join returns a complete set of records from Table B, with the
matching records (where available) in Table A. If there is no match, the left side will
contain null.
o SELECT <column> FROM <Table A> RIGHT OUTER JOIN < Table B> ON (
<Table A>.<column> = <Table B.<column>)
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Using a full outer join returns the set of all records in Table A and Table B, with
matching records from both sides where available. If there is no match, the missing
side will contain null.
o SELECT <column> FROM <Table A> FULL OUTER JOIN < Table B> ON (
<Table A>.<column> = <Table B.<column>)
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Using an inner join returns only the set of records that match in both Table A and
Table B.
o SELECT <column> FROM <Table A> INNER JOIN < Table B> ON ( <Table
A>.<column> = <Table B.<column>)
Unions
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Union - Puts multiple rowsets with matching columns together
Select <column list> from faster.<table 1>
UNION
Select <SAME column list> from faster.<table 2>
Union ALL - Includes duplicates
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Examples
1) Example: Show the company, department, equipment number, and count of open work orders for active
equipment numbers starting with ‘1’ and having more than 1 open work order
--Main query
SELECT DISTINCT EHCompany, EHDept,EHKey,
(
--Nested Query in SELECT clause
SELECT
COUNT(WHUID)
-- <--Aggregate function to return number of open
-- work orders for the equipment matched row
FROM faster.WHeader
WHERE
WHStatus NOT IN ('C','D')
--<-- Using NOT operator with IN set
AND
WHEHUID = EHUID
-- <--EHUID is from Main or outer query an limits our
-- rows in WHeader to the row we are returning for EHeader
) "Open WO"
-- <--using alias name for column name so we can include a space
FROM faster.EHeader
WHERE
EHKey LIKE '1%'
--< using like operator with % wild card
AND
EHStatus = 'A'
GROUP BY EHCompany,EHDept, EHKey,EHUID
HAVING
--<-- Having clause to limit our records with nested query
(
--Nested Query in Having cluse
SELECT COUNT(WHUID)
FROM faster.WHeader WHERE WHStatus NOT IN ('C','D')
AND WHEHUID = EHUID
) >1
ORDER BY EHCompany,EHDept,EHKey --<--Order By clause to sort our results
2) Work Order Aging
a. Syntax
i. DISTINCT
ii. BETWEEN
b. Creating a view
c. Using Joins
d. Using Aggregates
i. COUNT
e. Using Functions
i. ISNULL / NVL
ii. GetDate()
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iii. DATEDIFF
iv. FCS_INT2DATETIME
3) Asset Availability
a. Syntax
i. DISTINCT
ii. GROUP BY
b. Using Joins
c. Using Aggregates Function
i. COUNT
4) Carbon Footprint
a. Syntax
i. DISTINCT
ii. GROUP BY
b. Using Joins
c. Using Aggregates Function
i. COUNT
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