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For more information, you can refer to the following links:. The SSIS data types were founded to provide a unified set of data types that can handle different types from different sources. On the other hand, these data types have some limitations such as the minimum and maximum allowed values for the decimal data type, more detailed can be found at:.

Implicit conversions are not visible to the user. Data types are automatically converted from one data type to another. For example, when a string is compared to an int, the string is implicitly converted to int before the comparison proceeds:. For more information about implicit conversion, you can refer to the following posts on Stack overflow website:.

Explicit conversions are visible to the user. As an example:. In this article, I will not describe the Derived Column Transformation, since it was explained in a previous article in this series: SSIS Derived Column with multiple expression Vs multiple transformation.

Each pair of SSIS data types has its own case, you can find a pair that can be converted implicitly and another one that needs an explicit conversion. Sreedhar Sreedhar Add a comment. Active Oldest Votes. Damir Sudarevic Damir Sudarevic To solve my problem, I needed to have a template for excel that had characters in a field I needed to allow for more than characters but this pointed me in the right direction.

Appreciate your help. Mitul Panchal Mitul Panchal 5 5 silver badges 6 6 bronze badges. Sign up or log in Sign up using Google. Create a free Team What is Teams? Collectives on Stack Overflow.

Learn more. Asked 9 years, 11 months ago. Active 9 years, 11 months ago. Viewed 15k times. Chris Chris 1, 1 1 gold badge 16 16 silver badges 32 32 bronze badges. Add a comment. Active Oldest Votes. Pondlife Pondlife Still, I have to wonder, why, why, why!? I'm new to SSIS trying to covert data types. I want to change the format to a date format so i can load it into a date field in my database. How do I do this? You can find BOL reference here.

Also, you can use the Data Conversion transformation , which is probably easier if you are only changing the data type. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams?