- SQL Tutorial
- SQL - Home
- SQL - Overview
- SQL - RDBMS Concepts
- SQL - Databases
- SQL - Syntax
- SQL - Data Types
- SQL - Operators
- SQL - Expressions
- SQL Database
- SQL - Create Database
- SQL - Drop Database
- SQL - Select Database
- SQL - Rename Database
- SQL - Show Databases
- SQL - Backup Database
- SQL Table
- SQL - Create Table
- SQL - Show Tables
- SQL - Rename Table
- SQL - Truncate Table
- SQL - Clone Tables
- SQL - Temporary Tables
- SQL - Alter Tables
- SQL - Drop Table
- SQL - Delete Table
- SQL - Constraints
- SQL Queries
- SQL - Insert Query
- SQL - Select Query
- SQL - Select Into
- SQL - Insert Into Select
- SQL - Update Query
- SQL - Delete Query
- SQL - Sorting Results
- SQL Views
- SQL - Create Views
- SQL - Update Views
- SQL - Drop Views
- SQL - Rename Views
- SQL Operators and Clauses
- SQL - Where Clause
- SQL - Top Clause
- SQL - Distinct Clause
- SQL - Order By Clause
- SQL - Group By Clause
- SQL - Having Clause
- SQL - AND & OR
- SQL - BOOLEAN (BIT) Operator
- SQL - LIKE Operator
- SQL - IN Operator
- SQL - ANY, ALL Operators
- SQL - EXISTS Operator
- SQL - CASE
- SQL - NOT Operator
- SQL - NOT EQUAL
- SQL - IS NULL
- SQL - IS NOT NULL
- SQL - NOT NULL
- SQL - BETWEEN Operator
- SQL - UNION Operator
- SQL - UNION vs UNION ALL
- SQL - INTERSECT Operator
- SQL - EXCEPT Operator
- SQL - Aliases
- SQL Joins
- SQL - Using Joins
- SQL - Inner Join
- SQL - Left Join
- SQL - Right Join
- SQL - Cross Join
- SQL - Full Join
- SQL - Self Join
- SQL - Delete Join
- SQL - Update Join
- SQL - Left Join vs Right Join
- SQL - Union vs Join
- SQL Keys
- SQL - Unique Key
- SQL - Primary Key
- SQL - Foreign Key
- SQL - Composite Key
- SQL - Alternate Key
- SQL Indexes
- SQL - Indexes
- SQL - Create Index
- SQL - Drop Index
- SQL - Show Indexes
- SQL - Unique Index
- SQL - Clustered Index
- SQL - Non-Clustered Index
- Advanced SQL
- SQL - Wildcards
- SQL - Comments
- SQL - Injection
- SQL - Hosting
- SQL - Min & Max
- SQL - Null Functions
- SQL - Check Constraint
- SQL - Default Constraint
- SQL - Stored Procedures
- SQL - NULL Values
- SQL - Transactions
- SQL - Sub Queries
- SQL - Handling Duplicates
- SQL - Using Sequences
- SQL - Auto Increment
- SQL - Date & Time
- SQL - Cursors
- SQL - Common Table Expression
- SQL - Group By vs Order By
- SQL - IN vs EXISTS
- SQL - Database Tuning
- SQL Function Reference
- SQL - Date Functions
- SQL - String Functions
- SQL - Aggregate Functions
- SQL - Numeric Functions
- SQL - Text & Image Functions
- SQL - Statistical Functions
- SQL - Logical Functions
- SQL - Cursor Functions
- SQL - JSON Functions
- SQL - Conversion Functions
- SQL - Datatype Functions
- SQL Useful Resources
- SQL - Questions and Answers
- SQL - Quick Guide
- SQL - Useful Functions
- SQL - Useful Resources
- SQL - Discussion
SQL - DATETIME2FROMPARTS() Function
The SQL DATETIME2FROMPARTS() function is used to construct a datetime2 value from an individual date and time segments.
This function accepts eight parameters such as year, month, day, hour, minute, second, and precision, and returns a datetime2 value that represents the specified time.
If the values passed as parameters are invalid, this function will result in an error.
If any of the parameters are null, it will return the result as null.
It returns an error if any of the parameters are missing.
This function is mostly used when there are separate values for the year, month, day, hour, minute, second, and fractional seconds of a datetime2 value and want to combine them into a single datetime2 value.
Syntax
Following is the syntax of the SQL DATETIME2FROMPARTS() function −
DATETIME2FROMPARTS(year, month, day, hour, minute, seconds, fractions, precision)
Parameters
This function accepts eight parameters. The same is described below −
year − This specifies the year segment of the datetime2 value, expressed as an integer.
month − This specifies the month segment of the datetime2 value, expressed as an integer from 1 to 12.
day − This specifies the day segment of the datetime2 value, expressed as an integer from 1 to 31.
hour − This specifies the hour segment of the datetime2 value, expressed as an integer from 0 to 23.
minute − This specifies the minute segment of the datetime2 value, expressed as an integer from 0 to 59.
seconds − This specifies the second segment of the datetime2 value, expressed as an integer from 0 to 59.
fractions − This specifies the fraction of the datetime2 value, expressed as an integer from 0 to 9999999.
precision − This specifies the precision of the datetime2 value to be returned.
Example
In the following example, we are trying to construct a datetime2 value without the fractions of a second using the following query −
SQL> SELECT DATETIME2FROMPARTS(2023, 02, 20, 06, 10, 45, 0, 0) AS RESULT;
Output
On executing the above query, the output is displayed as follows −
+---------------------+ | RESULT | +---------------------+ | 2023-02-20 06:10:45 | +---------------------+
Example
Let us try to use the fractions and precision parameters of the SQL DATETIME2FROMPARTS() function −
When the value of the fraction is 5 and the precision value is 1, then the value of fractions represents 5/10 of a second.
When the value of the fraction is 5 and the precision value is 2, then the value of fractions represents 5/100 of a second.
When the value of the fraction is 5 and the precision value is 3, then the value of fractions represents 5/1000 of a second.
SQL> SELECT DATETIME2FROMPARTS(2023, 02, 20, 06, 10, 45, 5, 1) AS RESULT_1; SQL> SELECT DATETIME2FROMPARTS(2023, 02, 20, 06, 10, 45, 5, 2) AS RESULT_2; SQL> SELECT DATETIME2FROMPARTS(2023, 02, 20, 06, 10, 45, 5, 3) AS RESULT_3;
Output
If we execute the program, the result is produced as follows −
+-----------------------+ | RESULT | +-----------------------+ | 2023-02-20 06:10:45.5 | +-----------------------+ +------------------------+ | RESULT | +------------------------+ | 2023-02-20 06:10:45.05 | +------------------------+ +-------------------------+ | RESULT | +-------------------------+ | 2023-02-20 06:10:45.005 | +-------------------------+
Example
Here, we are providing invalid values to any of the parameters of the function, it results in an error.
SQL> SELECT DATETIME2FROMPARTS(2023, 16, 45, 29, 76, 88, 5, 1) AS RESULT;
Output
When we execute the above query, the output is obtained as follows −
Cannot construct data type datetime2, some of the arguments have values which are not valid.
Example
If we provide any of the parameters of the function as null, the function will result as null.
SQL> SELECT DATETIME2FROMPARTS(2023, null, null, null, 34, 30, 5, 1) AS RESULT;
Output
When we execute the above query, the output is obtained as follows −
+--------+ | RESULT | +--------+ | NULL | +--------+
Example
We need to provide all five parameters of the function. If we do not provide it, the function will result in an error.
SQL> SELECT DATETIME2FROMPARTS(2023, 02, 20, 06, 10) AS RESULT;
Output
If we execute the above query, the result is produced as follows −
The datetime2fromparts function requires 8 argument(s).
Example
Assume we have created a table with the name STUDENTS in the SQL database using the CREATE statement as shown in the query below −
SQL> CREATE TABLE STUDENTS(ID INT NOT NULL, NAME VARCHAR (200) NOT NULL, YEARS VARCHAR (200) NOT NULL, MONTHS VARCHAR (200) NOT NULL, DAYS VARCHAR (200) NOT NULL, HOURS VARCHAR (200) NOT NULL, MINUTES VARCHAR (200) NOT NULL, SECONDS VARCHAR (200) NOT NULL);
Now, let us insert some records in the STUDENTS table using INSERT statements as shown in the query below −
SQL> INSERT INTO STUDENTS(ID, NAME, YEARS, MONTHS, DAYS, HOURS, MINUTES, SECONDS) VALUES(1, 'Dhruv', '2000', '02', '01', '14', '30', '00'); INSERT INTO STUDENTS(ID, NAME, YEARS, MONTHS, DAYS, HOURS, MINUTES, SECONDS) VALUES(2, 'Arjun', '2001', '05', '20', '02', '34', '45'); INSERT INTO STUDENTS(ID, NAME, YEARS, MONTHS, DAYS, HOURS, MINUTES, SECONDS) VALUES(3, 'Dev', '2000', '05', '25', '05', '56', '45'); INSERT INTO STUDENTS(ID, NAME, YEARS, MONTHS, DAYS, HOURS, MINUTES, SECONDS) VALUES(4, 'Riya', '2003', '01', '10', '17', '21', '23'); INSERT INTO STUDENTS(ID, NAME, YEARS, MONTHS, DAYS, HOURS, MINUTES, SECONDS) VALUES(5, 'Aarohi','1999', '12', '20', '23', '36', '54'); INSERT INTO STUDENTS(ID, NAME, YEARS, MONTHS, DAYS, HOURS, MINUTES, SECONDS) VALUES(6, 'Lisa', '2004', '07', '17', '10', '46', '13'); INSERT INTO STUDENTS(ID, NAME, YEARS, MONTHS, DAYS, HOURS, MINUTES, SECONDS) VALUES(7, 'Roy', '2003', '09', '19', '04', '30', '00');
We can verify whether the table is created or not using the following query −
SQL> SELECT * FROM STUDENTS
The table STUDENTS is successfully created in the SQL database.
+----+-------+-------+--------+------+-------+---------+---------+ | ID | NAME | YEARS | MONTHS | DAYS | HOURS | MINUTES | SECONDS | +----+-------+-------+--------+------+-------+---------+---------+ | 1 | Dhruv | 2000 | 02 | 01 | 14 | 30 | 00 | | 2 | Arjun | 2001 | 05 | 20 | 02 | 34 | 45 | | 3 | Dev | 2000 | 05 | 25 | 05 | 56 | 45 | | 4 | Riya | 2003 | 01 | 10 | 17 | 21 | 23 | | 5 | Aarohi| 1999 | 12 | 20 | 23 | 36 | 54 | | 6 | Lisa | 2004 | 07 | 17 | 10 | 46 | 13 | | 7 | Roy | 2003 | 09 | 19 | 04 | 30 | 00 | +----+-------+-------+--------+------+-------+---------+---------+
Here, we are joining all the datetime2 values of the students to retrieve the students birth date and time using the following query −
SQL> SELECT NAME, DATETIME2FROMPARTS(YEARS, MONTHS, DAYS, HOURS, MINUTES, SECONDS, 0, 2) AS STUDENTS_BIRTH_DATE_AND_TIME FROM STUDENTS;
Output
When we execute the above query, the output is obtained as follows −
+--------+------------------------------+ | NAME | STUDENTS_BIRTH_DATE_AND_TIME | +--------+------------------------------+ | Dhruv | 2000-02-01 14:30:00.00 | | Arjun | 2001-05-20 02:34:45.00 | | Dev | 2000-05-25 05:56:45.00 | | Riya | 2003-01-10 17:21:23.00 | | Aarohi | 1999-12-20 23:36:54.00 | | Lisa | 2004-07-17 10:46:13.00 | | Roy | 2003-09-19 04:30:00.00 | +--------+------------------------------+
To Continue Learning Please Login
Login with Google