Getting started with SQL Queries and Programming Jeremy Brinkman Assistant VP for Information Technology University of Northwestern Ohio

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The SQL developer’s toolbox Locating data in Colleague SQL query fundamentals Presentation Overview

The SQL Developer’s Toolbox

SQL Server Management Studio The SQL Developer’s Toolbox

Colleague Screens – RDEL – RDEP – RFEI – RDSF The SQL Developer’s Toolbox

Colleague Screens Continued – EOFM The SQL Developer’s Toolbox

Simple but effective: browse the data SELECT TOP 10 * FROM TABLE The SQL Developer’s Toolbox

Other useful tools – SQL Server Profiler – Colleague Studio – Red-gate SQL Prompt The SQL Developer’s Toolbox

Locating Data in Colleague

Locating Data on Colleague Screens Field help Form/process help F1

Locating Data on Colleague Screens

Lookup the field on RDEL to get the file name.

Locating Data on Colleague Screens Match the file name from RDEL to the SQL table

Locating Data on Colleague Screens Interpreting RDEL Replace the “.” with “_” to derive the SQL table name from the UniData file name. Data Fields (D) – data can be found inside the table listed in the File Name field. List Fields (L) – Data can be found in the _LS table version of the table in the File Name field. PERSON_LS is one example. Associated Fields (A) – Data can be found in a SQL table named for the association listed on RDEL. X Pointer and Q Pointer Fields – Related data can be found in the Secondary Pointer/File. For X Pointer fields, the pointer exists in the SQL table itself. For Q Pointer fields, the pointer exists in the _LS table.

Locating Data on Colleague Screens Q Pointer example:

Locating Data on Colleague Screens Q Pointer example in SQL Server:

Locating Data on Colleague Screens Associated field example:

Locating Data on Colleague Screens Associated field example in SQL Server:

Locating Data on Colleague Screens Q Pointer + Association example:

Locating Data on Colleague Screens Q Pointer + Association in SQL:

Locating Data on Colleague Screens A few more tips: The POS field is used to store the position of data in multivalued fields or associations. “VAR” fields found on Colleague forms do not represent actual fields in the SQL database. File Suites are often difficult to interpret. In general, when you see “ACYR” in a file, you can replace it with the file suite year.

SQL Query Fundamentals

SELECT FROM WHERE ORDER BY Elements of a basic SQL Query

SELECT PERSON.FIRST_NAME, PERSON.LAST_NAME FROM PERSON WHERE PERSON.LAST_NAME = ‘Flintstone’ ORDER BY PERSON.FIRST_NAME SQL Query Example #1

Coding Tip: Always prefix your field names with a table name or alias. Coding Tip

Using a Computed Column SQL Query Example #2 SELECT PERSON.FIRST_NAME, PERSON.LAST_NAME, dbo.AGE(PERSON.ID) FROM PERSON WHERE PERSON.LAST_NAME = 'Flintstone' ORDER BY PERSON.FIRST_NAME

SELECT FROM INNER JOIN ON = WHERE ORDER BY Let’s Join Another Table

SELECT PERSON.FIRST_NAME, PERSON.LAST_NAME, PERSON_LS.POS, PERSON_LS.PER_ETHNICS FROM PERSON INNER JOIN PERSON_LS ON PERSON_LS.ID = PERSON.ID WHERE PERSON.LAST_NAME = ‘Flintstone’ ORDER BY PERSON.FIRST_NAME SQL Query Example #3

Coding Tip: Keep code clean by using proper indentation. Coding Tip

Most Common Join Types INNER JOIN – Include only records where the join field(s) matches in the left and right table. LEFT OUTER JOIN – Include all records from the left table and only those in the right table that match the join field(s)

SQL Query Example #4 List all addresses for a person SELECT PERSON.FIRST_NAME, PERSON.LAST_NAME, ADDRESS_LS.ADDRESS_LINES, ADDRESS.CITY, ADDRESS.STATE, ADDRESS.ZIP FROM PERSON INNER JOIN PSEASON ON PERSON.ID = PSEASON.ID INNER JOIN ADDRESS ON PSEASON.PERSON_ADDRESSES = ADDRESS.ADDRESS_ID INNER JOIN ADDRESS_LS ON ADDRESS.ADDRESS_ID = ADDRESS_LS.ADDRESS_ID AND ADDRESS_LS.POS = 1 WHERE PERSON.LAST_NAME = 'Flintstone'

Questions?

Contact Information Jeremy Brinkman Assistant VP for Information Technology University of Northwestern Ohio