SELECT PPNF.full_name, papf.person_number employee_number,
paa.start_date "doj",
add_months(MAX(paa.start_date), (ceil(months_between(sysdate,MAX(paa.start_date))/12)) * 12-12 ) session_start_date,
add_months(to_date(TRUNC(paa.end_date)), 12) - 1 "year end date",
add_months(add_months(to_date(TRUNC(paa.end_date)),12),6) -1 "session end date",
pea.email_address
FROM per_all_people_f papf,
per_person_names_f ppnf,
per_all_assignments_f paaf,
per_periods_of_service ppos,
per_person_types ppt,
per_person_type_usages_f pptuf,
anc_per_abs_entries paa,
anc_absence_types_f abtf,
per_email_addresses pea
WHERE papf.person_id = paaf.person_id
AND paaf.primary_flag = 'Y'
AND paaf.assignment_type = 'E'
AND paaf.assignment_status_type = 'ACTIVE'
AND papf.person_id =ppnf.person_id
AND ppnf.name_type ='GLOBAL'
AND paaf.person_id = ppos.person_id
AND paaf.period_of_service_id = ppos.period_of_service_id
AND papf.person_id = pptuf.person_id
AND pptuf.person_type_id = ppt.person_type_id
AND ppt.system_person_type = 'EMP'
AND papf.person_id = paa.person_id
AND ppos.period_of_service_id = paa.period_of_service_id
AND paa.ABSENCE_STATUS_CD ='SUBMITTED'
AND paa.APPROVAL_STATUS_CD ='APPROVED'
AND paa.absence_type_id = abtf.absence_type_id
AND abtf.BASE_NAME ='ANNUAL LEAVE_ZA'
AND papf.primary_email_id= pea.email_address_id (+)
AND pea.email_type (+) = 'W1'
AND TRUNC(sysdate) BETWEEN paaf.effective_start_date AND paaf.effective_end_date
AND TRUNC(sysdate) BETWEEN papf.effective_start_date AND papf.effective_end_date
AND TRUNC(sysdate) BETWEEN pptuf.effective_start_date AND pptuf.effective_end_date
AND TRUNC(sysdate) BETWEEN ppnf.effective_start_date AND ppnf.effective_end_date
AND TRUNC(sysdate) BETWEEN abtf.effective_start_date AND abtf.effective_end_date
AND (TRUNC(TRUNC(TRUNC(sysdate))) = ( add_months(to_date(TRUNC(paa.end_date)), 0) - 2 ) )
AND ppos.legislation_code='ZA'
GROUP BY PPNF.full_name, papf.person_number ,ppos.date_start ,pea.email_address,paa.start_date, paa.end_date, add_months(to_date(TRUNC(paa.end_date)), 0) - 12, add_months(to_date(TRUNC(paa.end_date)),6) -1 

MySQL online editor

Write, Run & Share MySQL queries online using OneCompiler's MySQL online editor and compiler for free. It's one of the robust, feature-rich online editor and compiler for MySQL. Getting started with the OneCompiler's MySQL editor is really simple and pretty fast. The editor shows sample boilerplate code when you choose language as 'MySQL' and start writing queries to learn and test online without worrying about tedious process of installation.

About MySQL

MySQL is a open-source, free and very popular relational database management system which is developed, distributed and supported by Oracle corporation.

Key Features:

  • Open-source relational database management systems.
  • Reliable, very fast and easy to use database server.
  • Works on client-server model.
  • Highly Secure and Scalable
  • High Performance
  • High productivity as it uses stored procedures, triggers, views to write a highly productive code.
  • Supports large databases efficiently.
  • Supports many operating systems like Linux*,CentOS*, Solaris*,Ubuntu*,Windows*, MacOS*,FreeBSD* and others.

Syntax help

Commands

1. CREATE

CREATE TABLE table_name (
                column1 datatype,
                column2 datatype,
                ....);

Example

CREATE TABLE EMPLOYEE (
  empId INTEGER PRIMARY KEY,
  name TEXT NOT NULL,
  dept TEXT NOT NULL
);

2. ALTER

ALTER TABLE Table_name ADD column_name datatype;

Example

INSERT INTO EMPLOYEE VALUES (0001, 'Dave', 'Sales');

3. TRUNCATE

TRUNCATE table table_name;

4. DROP

DROP TABLE table_name;

5. RENAME

RENAME TABLE table_name1 to new_table_name1; 

6. COMMENT

Single-Line Comments:

 --Line1;

Multi-Line comments:

   /* Line1,
   Line2 */

DML Commands

1. INSERT

INSERT INTO table_name (column1, column2, column3, ...) VALUES (value1, value2, value3, ...);

Note: Column names are optional.

Example

INSERT INTO EMPLOYEE VALUES (0001, 'Ava', 'Sales');

2. SELECT

SELECT column1, column2, ...
FROM table_name
[where condition]; 

Example

SELECT * FROM EMPLOYEE where dept ='sales';

3. UPDATE

UPDATE table_name
SET column1 = value1, column2 = value2, ...
WHERE condition; 

Example

UPDATE EMPLOYEE SET dept = 'Sales' WHERE empId='0001'; 

4. DELETE

DELETE FROM table_name where condition;

Example

DELETE from EMPLOYEE where empId='0001'; 

Indexes

1. CREATE INDEX

  CREATE INDEX index_name on table_name(column_name);
  • To Create Unique index:
  CREATE UNIQUE INDEX index_name on table_name(column_name);

2. DROP INDEX

DROP INDEX index_name ON table_name;

Views

1. Create a View

Creating a View:
CREATE VIEW View_name AS 
Query;

2. How to call view

SELECT * FROM View_name;

3. Altering a View

ALTER View View_name AS 
Query;

4. Deleting a View

DROP VIEW View_name;

Triggers

1. Create a Trigger

CREATE TRIGGER trigger_name trigger_time trigger_event
    ON tbl_name FOR EACH ROW [trigger_order] trigger_body
/* where
trigger_time: { BEFORE | AFTER }
trigger_event: { INSERT | UPDATE | DELETE }
trigger_order: { FOLLOWS | PRECEDES } */

2. Drop a Trigger

DROP TRIGGER [IF EXISTS] trigger_name;

Stored Procedures

1. Create a Stored Procedure

CREATE PROCEDURE sp_name(p1 datatype)
BEGIN
/*Stored procedure code*/
END;

2. How to call Stored procedure

CALL sp_name;

3. How to delete stored procedure

DROP PROCEDURE sp_name;

Joins

1. INNER JOIN

SELECT * FROM TABLE1 INNER JOIN TABLE2 where condition;

2. LEFT JOIN

SELECT * FROM TABLE1 LEFT JOIN TABLE2 ON condition;

3. RIGHT JOIN

SELECT * FROM TABLE1 RIGHT JOIN TABLE2 ON condition;

4. CROSS JOIN

SELECT select_list from TABLE1 CROSS JOIN TABLE2;