Add files via upload

add file

Author: Unique982

ALTER TABLE for adding column by POsition without constraints.txt

@@ -0,0 +1,32 @@
+ALTER TABLE for adding column by POsition without constraints
+Add Column By Position
+.-> Last (by default)
+.-> first
+.-> After
+
+// First
+syntax: ALTER TABLE table_name ADD COLUMN column_name datatype(size) FIRST;
+ex: ALTER TABLE new ADD COLUMN t_id int (10) FIRST;
+
+
+ex: select * from new;
++------+----+---------+---------+--------+
+| t_id | id | name    | address | number |
++------+----+---------+---------+--------+
+| NULL |  5 | Hari    | NULL    |   NULL |
+| NULL |  6 | Ram     | NULL    |   NULL |
+| NULL |  7 | Sita    | NULL    |   NULL |
+| NULL |  8 | testing | NULL    |   NULL |
++------+----+---------+---------+--------+
+
+// After
+ syntax: ALTER TABLE new ADD COLUMN t_number int (10) AFTER name ;
+:- mysql> select * from new;
++------+----+---------+----------+---------+--------+
+| t_id | id | name    | t_number | address | number |
++------+----+---------+----------+---------+--------+
+| NULL |  5 | Hari    |     NULL | NULL    |   NULL |
+| NULL |  6 | Ram     |     NULL | NULL    |   NULL |
+| NULL |  7 | Sita    |     NULL | NULL    |   NULL |
+| NULL |  8 | testing |     NULL | NULL    |   NULL |
++------+----+---------+----------+---------+--------+

ALTER TABLE for adding multiple columns without constraints.txt

@@ -0,0 +1,27 @@
+//ALTER TABLE for adding multiple columns without constraints
+
+1. add more than one column
+Syntax: ALTER TABLE table_name ADD COLUMN column_name datatype(size),
+ADD COLUMN column_name datatype(size);
+ex:
+ select * from new;
++----+---------+
+| id | name    |
++----+---------+
+|  5 | Hari    |
+|  6 | Ram     |
+|  7 | Sita    |
+|  8 | testing |
++----+---------+
+
+
+ex:ALTER TABLE new ADD COLUMN address varchar(50),ADD COLUMN number int (10);
+
++----+---------+---------+--------+
+| id | name    | address | number |
++----+---------+---------+--------+
+|  5 | Hari    | NULL    |   NULL |
+|  6 | Ram     | NULL    |   NULL |
+|  7 | Sita    | NULL    |   NULL |
+|  8 | testing | NULL    |   NULL |
++----+---------+---------+--------+

Alias in SQL.txt

@@ -0,0 +1,26 @@
+// Alisa 
+-> Aliases are used to temporarily rename a table or a column name.
+For table:
+syntax: SELECT column_name FROM table_name AS alisa_name(nick name);
+
+For column:
+syntax: SELECT column_name AS alisa_name FROM table_name;
+EX:  SELECT name as new_name FROM new;
++----------+
+| new_name |
++----------+
+| Hari     |
+| Ram      |
+| Sita     |
+| testing  |
++----------+
+
+ex:SELECT name "ne name" FROM new;
++---------+
+| ne name |
++---------+
+| Hari    |
+| Ram     |
+| Sita    |
+| testing |
++---------+

Alter table for adding one column without constraints.txt

@@ -0,0 +1,23 @@
+/Alter table for adding one column without constraints
+-> This command sis used to add/change/modify/drop existing structure of the table.
+.-> ADD Column
+-> When a new column is to be added to the table structure without constraints.
+syntax: ALTER TABLE table_name ADD COLUMN column_name datatype(size);
+ex: ALTER TABLE student_reg ADD COLUMN id int (10);
+Output:- select * from student_reg;
+
++------+---------+---------+------------+-----------+------+
+| s_id | name    | address | dob        | fees      | id   |
++------+---------+---------+------------+-----------+------+
+|  101 | RAM     | KTM     | 1998-12-15 |   1000.23 | NULL |
+|  102 | SITA    | KTM     | 2001-10-11 | 200000.12 | NULL |
+|  103 | HARI    | PKR     | 2001-01-12 |  10000.52 | NULL |
+|  104 | BIMAl   | KTM     | NULL       |   1001.23 | NULL |
+|  105 | KAMAL   | PKR     | 1956-12-12 | 100000.12 | NULL |
+|  106 | SITA KC | PKR     | 1998-02-02 |  20000.12 | NULL |
++------+---------+---------+------------+-----------+------+
+
+.-> Enable/Disable constraints
+.-> change Column
+.-> Modify Column
+.-> Drop Column

Arithmetic Operators in SQl.txt

@@ -0,0 +1,53 @@
+// Arithmetic Operators
+syntax: SELECT column_name,column_name Operators VALUES from table_name;
+
+Add operator ex
+ex:SELECT s_id,name,address,dob,fees+100 from student_reg;
++------+---------+---------+------------+-----------+
+| s_id | name    | address | dob        | fees+100  |
++------+---------+---------+------------+-----------+
+|  101 | RAM     | KTM     | 1998-12-15 |   1100.23 |
+|  102 | SITA    | KTM     | 2001-10-11 | 200100.12 |
+|  103 | HARI    | PKR     | 2001-01-12 |  10100.52 |
+|  104 | BIMAl   | KTM     | NULL       |   1101.23 |
+|  105 | KAMAL   | PKR     | 1956-12-12 | 100100.12 |
+|  106 | SITA KC | PKR     | 1998-02-02 |  20100.12 |
++------+---------+---------+------------+-----------+
+sub operator ex:
+ex: SELECT s_id,name,address,dob,fees-100 from student_reg;
++------+---------+---------+------------+-----------+
+| s_id | name    | address | dob        | fees-100  |
++------+---------+---------+------------+-----------+
+|  101 | RAM     | KTM     | 1998-12-15 |    900.23 |
+|  102 | SITA    | KTM     | 2001-10-11 | 199900.12 |
+|  103 | HARI    | PKR     | 2001-01-12 |   9900.52 |
+|  104 | BIMAl   | KTM     | NULL       |    901.23 |
+|  105 | KAMAL   | PKR     | 1956-12-12 |  99900.12 |
+|  106 | SITA KC | PKR     | 1998-02-02 |  19900.12 |
++------+---------+---------+------------+-----------+
+
+// div ex:
+ex: SELECT s_id,name,address,dob,fees/100 from student_reg;
++------+---------+---------+------------+-------------+
+| s_id | name    | address | dob        | fees/100    |
++------+---------+---------+------------+-------------+
+|  101 | RAM     | KTM     | 1998-12-15 |   10.002300 |
+|  102 | SITA    | KTM     | 2001-10-11 | 2000.001200 |
+|  103 | HARI    | PKR     | 2001-01-12 |  100.005200 |
+|  104 | BIMAl   | KTM     | NULL       |   10.012300 |
+|  105 | KAMAL   | PKR     | 1956-12-12 | 1000.001200 |
+|  106 | SITA KC | PKR     | 1998-02-02 |  200.001200 |
++------+---------+---------+------------+-------------+
+
+// mul operator
+ex:SELECT s_id,name,address,dob,fees*100 from student_reg;
++------+---------+---------+------------+-------------+
+| s_id | name    | address | dob        | fees*100    |
++------+---------+---------+------------+-------------+
+|  101 | RAM     | KTM     | 1998-12-15 |   100023.00 |
+|  102 | SITA    | KTM     | 2001-10-11 | 20000012.00 |
+|  103 | HARI    | PKR     | 2001-01-12 |  1000052.00 |
+|  104 | BIMAl   | KTM     | NULL       |   100123.00 |
+|  105 | KAMAL   | PKR     | 1956-12-12 | 10000012.00 |
+|  106 | SITA KC | PKR     | 1998-02-02 |  2000012.00 |
++------+---------+---------+------------+-------------+

Data Definition Language.txt

@@ -0,0 +1,34 @@
+// DATA Definitions language 
+topics:
+
+   ALTER EVENT
+   ALTER FUNCTION
+   ALTER INSTANCE
+   ALTER LOGFILE GROUP
+   ALTER PROCEDURE
+   ALTER SCHEMA
+   ALTER SERVER
+   ALTER TABLESPACE
+   ALTER VIEW
+   CREATE EVENT
+   CREATE FUNCTION
+   CREATE INDEX
+   CREATE LOGFILE GROUP
+   CREATE PROCEDURE
+   CREATE SCHEMA
+   CREATE SERVER
+   CREATE SPATIAL REFERENCE SYSTEM
+   CREATE TABLE
+   CREATE TABLESPACE
+   CREATE TRIGGER
+   DROP EVENT
+   DROP FUNCTION
+   DROP PROCEDURE
+   DROP SCHEMA
+   DROP SERVER
+   DROP SPATIAL REFERENCE SYSTEM
+   DROP TABLESPACE
+   DROP TRIGGER
+   FOREIGN KEY
+   RENAME TABLE
+   TRUNCATE TABLE