First, we will learn how to create the table in an SQL server. Run the below query for creating Employee and department table. CreatetabletblMyDepartment(Idintprimarykeyidentity(1,1),DepartmentNamevarchar(50),IsActivebit) SQL Copy CreatetabletblMyEmployee(Idintprimarykeyidentity(1,1),E...
The following sections explain how to create, replace, and drop views using SQL commands. Creating Views Suppose we have EMP and DEPT table. To see the empno, ename, sal, deptno, department name and location we have to give a join query like this....
SET DEFINE OFF; CREATE USER SELECT_AI_USER IDENTIFIED BY "Oracle##2025AI"; GRANT RESOURCE TO SELECT_AI_USER; GRANT CREATE SESSION TO SELECT_AI_USER; GRANT CREATE VIEW TO SELECT_AI_USER; GRANT CREATE TABLE TO SELECT_AI_USER; GRANT CONNECT TO SELECT_AI_USER; GRANT ALTER SYSTEM...
How to Use Replace in SQL with Update QueryTo show the use of the Replace function in SQL with an update query, we will create an Employee table with Emp_ID, Emp_FirstName, Emp_LastName, Designation, and Email_ID. Suppose the email IDs are updated in the wrong format, so we will ...
PK_EMP PK_EMP P query to find unique constraints on a table in oracle SQL> CREATE TABLE DEPT_MASTER ( dept_nr NUMBER UNIQUE, dept_name varchar2(100) NOT NULL, dept_status NUMBER(1,0) NOT NULL, created_at date ); Table created. ...
This command adds a new constraint called df_emp_hired which ensures the default value of the employment_status column is ‘Hired’. Remove the Default To remove the default from a column in SQL Server: ALTER TABLE employee ALTER COLUMN employment_status DROP DEFAULT; ...
SQL>CREATETABLE EMP (EMPNO NUMBER(4) NOT NULL, 2 ENAME VARCHAR2(10), 3 JOB VARCHAR2(9), 4 MGR NUMBER(4), 5 HIREDATE DATE, 6 SAL NUMBER(7, 2), 7 COMM NUMBER(7, 2), 8 DEPTNO NUMBER(2)); Table created. SQL> SQL>INSERTINTO EMP VALUES (7369, 'SMITH', 'CLERK', 7902, TO...
group by empname,empdepartment having count(empname)> 1 AND count (empdepartment) > 1; Output Also see,Natural Join in SQL Creating Sample Dataset Before finding duplicate records, first, let us create a sample table of a company containing duplicate records. ...
CREATETEMPORARYTABLEemp.filter_tmpASSELECTid,nameFROMemp.employeeWHEREgender='F'; 3.1.4 Creating temporary external table CREATETEMPORARYexternalTABLEemp.employee_tmp2(idint); 3.2 Loading Files to a Temporary Table Have the data file (data.txt) on HDFS. Note: you can also load the data fromLO...
Before we create a table, make sure that you have a schema set up in an SQL server. For this example, we will be using aMySQL serveralong with MySQL Workbench to create a table. The first thing to do is to set up a connection. To do this, open MySQL Workbench, and click on the...