SYSDATE is a special pseudo column that exists in the Oracle database and allows you to return the current time and date as part of your SQL query.
- Oracle has a special, built-in function called sysdate.…Which allows us to retrieve and format the current…date and time of the Oracle database server.…Let's see it in action.…Let's start with the simplest example.…Select sysdate from dual.…Running this query will display the current date…and/or time depending on how my session NLS or…date/time parameters have been configured.…
We can override the default values and get a sysdate…output that is formatted to our specific requirement…using a combination of the to_char functions…with sysdate.…So let's add to_char to our query,…specifying sysdate as the first parameter for…the function, comma and a formatting mask, such as:…day day/MON/year year year year…so that we'll get 4 digits representing the year,…HH24:MI:SS, which signifies a time-formatting mask.…
Running this query again, will show us the current…date and time.…Running the query again, an additional time,…will show us an updated value.…We can, of course, change the formatting mask to our liking.…So instead of hyphens I can use, slash characters.…
Note: This training course is appropriate for beginning database developers with no prior experience with SQL or Oracle.
- Using Oracle SQL*Developer, the free development environment
- Selecting data from tables
- Filtering data
- Using functions to manipulate data
- Joining data from tables
- Creating tables
- Updating values
- Truncating data
- Grouping and ordering result sets
- Working with primary keys
- Checking constraints
Skill Level Beginner
Database Foundations: Core Conceptswith Adam Wilbert2h 14m Beginner
Database Foundations: Administrationwith Adam Wilbert1h 14m Beginner
Oracle 12c Database: Administrationwith David Yahalom3h 58m Beginner
1. Introduction to SQL
2. Preparing the Course Environment
Downloading the course VM2m 16s
3. Using Oracle SQL Developer
4. Basic SELECT Queries
5. String, Number, and Date Functions
6. Joining Table Data
7. Manipulating Data
8. Grouping Data
9. Advanced Topics
Next steps1m 33s
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