A Gentle Introduction to

SQL

FUNCTIONS

How to use string functions, logical functions and mathematical functions.

Concatenate strings.| SQLite | DB2 | Access | Postgres | Oracle | SQL Server | MySQL | Mimer | Sybase |
Substring: Extracting part of a string.| SQLite | DB2 | Access | Postgres | Oracle | SQL Server | MySQL | Mimer | Sybase |
lower case| SQLite | DB2 | Access | Postgres | Oracle | SQL Server | MySQL | Mimer | Sybase |
Finding a substring in a string| SQLite | DB2 | Access | Postgres | Oracle | SQL Server | MySQL | Mimer | Sybase |
Formatting numbers to two decimal places.| SQLite | DB2 | Access | Postgres | Oracle | SQL Server | MySQL | Mimer | Sybase |
Replace a NULL with a specific value| SQLite | DB2 | Access | Postgres | Oracle | SQL Server | MySQL | Mimer | Sybase |
Conditional values| SQLite | DB2 | Access | Postgres | Oracle | SQL Server | MySQL | Mimer | Sybase |
Get the date and time right now.| SQLite | DB2 | Access | Postgres | Oracle | SQL Server | MySQL | Mimer | Sybase |
Format dates.| SQLite | DB2 | Access | Postgres | Oracle | SQL Server | MySQL | Mimer | Sybase |