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A memo is a useful tool to provide a record of communication.

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16y ago

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What is a sql sub query?

It is possible to embed a SQL statement within another. When this is done on the WHERE or the HAVING statements, we have a subquery construct. The syntax is as follows: SELECT "column_name1"FROM "table_name1"WHERE "column_name2" [Comparison Operator](SELECT "column_name3"FROM "table_name2"WHERE [Condition])


What is the difference between a statement and a clause in SQL?

An SQL statement is a complete set of clauses which returns a value and ends with a semicolon(;) A statement is made up of several clauses Ex: select * from person where f_name='me'; In this ex ' select * from person where f_name='me';' is the statement and select*, from person, where f_name= are the clauses


Which SQL statement is used to extract data from a database?

"SELECT" statement is used to extract the infromation from a database.


Can you explain how to use the SELECT statement in SQL to perform mathematical operations on data in a database table?

Yes, in SQL, you can use the SELECT statement along with mathematical operators like , -, , / to perform calculations on data in a database table. For example, you can add, subtract, multiply, or divide values from different columns or apply functions to calculate results. Just include the mathematical operation within the SELECT statement to perform the desired calculation.


What is the name of a statement written to retrieve specific data from a table?

The name of a statement written to retrieve specific data from a table is a SQL SELECT statement.


Sql statement for retrieving data between two dates in SQL Server?

SELECT aFieldName, someOtherFieldName, yetAnotherFieldName FROM aTableName WHERE fieldNameWithDateInIt BETWEEN date1 and date2


What is a SQL update statement?

An SQL Update Statement is one that changes the data of one more records in a table. One could change a complete row, or select which to change. One could find how to do this at WebCheatSheet.


What is the basic form of a SQL statement to read data out of a table?

select * from Table 1.SELECT col1,col2,... from Tablename 2.SELECT col1,col2,...from Tablename WHERE condition


What basic clause in an SQL statement is used to retrieve rows and columns from tables?

The SELECT clause is used to retrieve rows and columns from tables. Ex: Select * from employee


What keyword in an SQL statement's WHERE clause is used to select rows based on a range of values?

BETWEEN For example: SELECT columnName FROM tableName WHERE columnName BETWEEN '1' AND '20'


What are 3 ways SQL can access a relational database?

SELECT * FROM CustomersWHERE City LIKE 'ber%';SELECT * FROM CustomersWHERE City LIKE '%es%';SELECT Customers.CustomerName, Orders.OrderIDFROM CustomersINNER JOIN OrdersON Customers.CustomerID=Orders.CustomerIDORDER BY Customers.CustomerName;I did a lot of SQL in my second half of my school, so I know it is not that different from this.


What can a SQL UPDATE statement allow one to do within a table?

A SQL UPDATE statement allows the user to update existing records in a database table. For example, it could be used to update a customer's address, or a the price of a product.