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‎AND operator in SQL.txt

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// AND
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-> The AND operator display a record if both the first condition AND the second condition are ture.
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syntax: SELECT * FROM table_name WHERE column_name = 'Value' And column='value';
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Ex: SELECT * FROM student_reg WHERE name='HARI' AND s_id =103;
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+------+------+---------+------------+----------+
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| s_id | name | address | dob | fees |
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+------+------+---------+------------+----------+
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| 103 | HARI | PKR | 2001-01-12 | 10000.52 |
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+------+------+---------+------------+----------+

‎Between Number in SQL.txt

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// Between Number
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Syntax: SELECT * FROM table_name WHERE column_name BETWEEN value1 AND Value2;
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ex: SELECT * FROM student_reg WHERE s_id BETWEEN 102 AND 104;
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+------+-------+---------+------------+-----------+
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| s_id | name | address | dob | fees |
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+------+-------+---------+------------+-----------+
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| 102 | SITA | KTM | 2001-10-11 | 200000.12 |
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| 103 | HARI | PKR | 2001-01-12 | 10000.52 |
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| 104 | BIMAl | KTM | NULL | 1001.23 |
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+------+-------+---------+------------+-----------+
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// BETWEEN TEXT
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syntax: SELECT * FROM table_name WHERE column_name BETWEEN 'value1' AND 'value2';
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ex: SELECT * FROM student_reg WHERE name BETWEEN 'A' AND 'K';
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+------+-------+---------+------------+----------+
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| s_id | name | address | dob | fees |
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+------+-------+---------+------------+----------+
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| 103 | HARI | PKR | 2001-01-12 | 10000.52 |
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| 104 | BIMAl | KTM | NULL | 1001.23 |
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+------+-------+---------+------------+----------+
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// BETWEEN DATE
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Syntax: SELECT * FROM table_name WHER column_name BETWEEN 'yyyy/mm/dd'
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Ex:SELECT * FROM student_reg WHERE dob BETWEEN '1998-12-15' AND '2001-10-12';
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+------+------+---------+------------+-----------+
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| s_id | name | address | dob | fees |
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+------+------+---------+------------+-----------+
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| 101 | RAM | KTM | 1998-12-15 | 1000.23 |
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| 102 | SITA | KTM | 2001-10-11 | 200000.12 |
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| 103 | HARI | PKR | 2001-01-12 | 10000.52 |
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+------+------+---------+------------+-----------+
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//

‎Combination of AND & OR in SQl.txt

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// Combination of AND & OR
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syntax: SELECT * FROM table_name WHERE column_name='value' AND (column_name='value' OR column_name1 ='value');
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Ex: SELECT * FROM student_reg WHERE name='KAMAL' AND (s_id =105 OR dob='1998-02-02');
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+------+-------+---------+------------+-----------+
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| s_id | name | address | dob | fees |
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+------+-------+---------+------------+-----------+
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| 105 | KAMAL | PKR | 1956-12-12 | 100000.12 |
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+------+-------+---------+------------+-----------+

‎IN operator in SQL.txt

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// In operator
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-> The In operator allows you to specify multiple value in a WHERE clause.
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Syntax: SELECT * FROM table_name WHERE column_name IN ('value1','value2');
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ex: SELECT * FROM student_reg WHERE name IN ('HARI','SITA');
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+------+------+---------+------------+-----------+
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| s_id | name | address | dob | fees |
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+------+------+---------+------------+-----------+
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| 102 | SITA | KTM | 2001-10-11 | 200000.12 |
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| 103 | HARI | PKR | 2001-01-12 | 10000.52 |
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+------+------+---------+------------+-----------+

‎IS Null and NOT NUll in SQL.txt

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// Null
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Null values represent missing unkhown data.
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Null != 0
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Is Null :- This used to select only the records with NULL values in the column.
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syntax: SELECT stu_id,name,address from student_reg WHERE address IS NULL;
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ex: SELECT * FROM student_reg WHERE dob IS NULL;
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+------+-------+---------+------+---------+
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| s_id | name | address | dob | fees |
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+------+-------+---------+------+---------+
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| 104 | BIMAl | KTM | NULL | 1001.23 |
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+------+-------+---------+------+---------+
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IS NOT NULL :- This is used to select only the records with no NULL values in the column.
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Syntax: SELECT column_name From table_name WHERE column_name IS NOT NULL;
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ex: SELECT * FROM student_reg WHERE dob IS NOT NULL;
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+------+---------+---------+------------+-----------+
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| s_id | name | address | dob | fees |
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+------+---------+---------+------------+-----------+
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| 101 | RAM | KTM | 1998-12-15 | 1000.23 |
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| 102 | SITA | KTM | 2001-10-11 | 200000.12 |
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| 103 | HARI | PKR | 2001-01-12 | 10000.52 |
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| 105 | KAMAL | PKR | 1956-12-12 | 100000.12 |
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| 106 | SITA KC | PKR | 1998-02-02 | 20000.12 |
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+------+---------+---------+------------+-----------+

‎NOT IN operator in SQL.txt

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// Not IN operator
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syntax: SELECT * FROM table_name WHERE column_name NOT IN ('value1','value2');
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Ex: SELECT * FROM student_reg WHERE name NOT IN ('HARI','SITA');
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+------+---------+---------+------------+-----------+
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| s_id | name | address | dob | fees |
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+------+---------+---------+------------+-----------+
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| 101 | RAM | KTM | 1998-12-15 | 1000.23 |
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| 104 | BIMAl | KTM | NULL | 1001.23 |
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| 105 | KAMAL | PKR | 1956-12-12 | 100000.12 |
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| 106 | SITA KC | PKR | 1998-02-02 | 20000.12 |
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+------+---------+---------+------------+-----------+

‎OR Operator in SQL.txt

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// OR
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-> The OR operator display a record if either the fisrt condition OR the second condition is true.
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Syntax: SELECT * FROM student_reg WHERE name ='HARI' OR s_id = 4;
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ex: SELECT * FROM student_reg WHERE name ='value' OR s_id =value;
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+------+---------+---------+------------+----------+
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| s_id | name | address | dob | fees |
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+------+---------+---------+------------+----------+
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| 103 | HARI | PKR | 2001-01-12 | 10000.52 |
9+
| 106 | SITA KC | PKR | 1998-02-02 | 20000.12 |
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+------+---------+---------+------------+----------+

‎operator in SQL.txt

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// Not equal operator
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Ex: SELECT * from student_reg WHERE name !='SITA';
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+------+---------+---------+------------+-----------+
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| s_id | name | address | dob | fees |
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+------+---------+---------+------------+-----------+
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| 101 | RAM | KTM | 1998-12-15 | 1000.23 |
7+
| 103 | HARI | PKR | 2001-01-12 | 10000.52 |
8+
| 104 | BIMAl | KTM | NULL | 1001.23 |
9+
| 105 | KAMAL | PKR | 1956-12-12 | 100000.12 |
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| 106 | SITA KC | PKR | 1998-02-02 | 20000.12 |
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+------+---------+---------+------------+-----------+
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// Greater Than operator
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Ex: SELECT * FROM student_reg WHERE fees > 20000;
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+------+---------+---------+------------+-----------+
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| s_id | name | address | dob | fees |
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+------+---------+---------+------------+-----------+
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| 102 | SITA | KTM | 2001-10-11 | 200000.12 |
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| 105 | KAMAL | PKR | 1956-12-12 | 100000.12 |
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| 106 | SITA KC | PKR | 1998-02-02 | 20000.12 |
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+------+---------+---------+------------+-----------+
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// Lessthan operator
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ex: SELECT * FROM student_reg WHERE fees < 20000;
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+------+-------+---------+------------+----------+
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| s_id | name | address | dob | fees |
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+------+-------+---------+------------+----------+
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| 101 | RAM | KTM | 1998-12-15 | 1000.23 |
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| 103 | HARI | PKR | 2001-01-12 | 10000.52 |
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| 104 | BIMAl | KTM | NULL | 1001.23 |
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+------+-------+---------+------------+----------+
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// lessthan or equal
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ex: SELECT * FROM student_reg WHERE fees <= 20000;
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+------+-------+---------+------------+----------+
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| s_id | name | address | dob | fees |
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+------+-------+---------+------------+----------+
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| 101 | RAM | KTM | 1998-12-15 | 1000.23 |
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| 103 | HARI | PKR | 2001-01-12 | 10000.52 |
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| 104 | BIMAl | KTM | NULL | 1001.23 |
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+------+-------+---------+------------+----------+
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// greaterthan or equal
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ex: SELECT * FROM student_reg WHERE fees >= 20000;
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+------+---------+---------+------------+-----------+
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| s_id | name | address | dob | fees |
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+------+---------+---------+------------+-----------+
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| 102 | SITA | KTM | 2001-10-11 | 200000.12 |
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| 105 | KAMAL | PKR | 1956-12-12 | 100000.12 |
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| 106 | SITA KC | PKR | 1998-02-02 | 20000.12 |
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+------+---------+---------+------------+-----------+

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