Sam Quantz Salt Lake City School District January 21, 2014

What is SQL SQL is a special purpose programming language designed for managing data in a relational database ( DDL (data definition language) (database object statements such as create) DML (data manipulation language) (statements like select, delete, and update)

Query Tools Microsoft Access (Good visual interface, not available on Macs) Oracle SQL Developer (Free runs on Java and works on Windows or Macs) Toad for Oracle (Expensive) Others

How to find Tables and View in PowerSchool Tables vs. Views Data Dictionary DDE/DDA Custom Page Management

Parts of a SQL statement SELECT column names FROM table names (Can include more than one table through joins) WHERE conditions GROUP BY column names. Used to group data. For use with built in functions, such as COUNT(),SUM(),AVG(), etc… ORDER BY column names.

Now you try Get student number, schoolid, grade_level Schoolid 100 Grade_level 9

Answer Select student_number, schoolid, grade_level From students where schoolid=100 and grade_level=9

Try again Get student_number, schoolid, grade_level Schoolid 100 Grade_level 9 or grade_level 10

Answer Select student_number, schoolid, grade_level From students where schoolid=100 and (grade_level=9 or grade_level=10)

Table Joins How tables relate to each other Primary vs. Foreign Keys Inner Joins Outer Joins Left Right

Foreign Keys Students TableSpenrollements Table

Now you try Get name, student_number, program id, program start date, program exit date From students and spenrollments Studentid is 200

Answer Select s.student_number, s.lastfirst, sp.programid, sp.enter_date, sp.exit_date From students s join spenrollments sp on s.id = sp.studentid Where s.id = 200

Accessing custom fields View PVSIS_CUSTOM_STUDENTS Use function ps_customfields.getstudentscf(studentid,field_name)

Example Select s.student_number, s.lastfirst, sp.programid, sp.enter_date, sp.exit_date, ps_customfields.getstudentscf(s.id,'bike_brand') bike_brand From students s join spenrollments sp on s.id = sp.studentid Where s.id = 200

PowerViews PVSIS_ PSSIS_