Error Handling in Data
The data flow component transformation to column data extracts data from sources. Loads data into destinations, errors can occur. Errors occur because of unexpected data values. A data conversion fails because a column contains a string instead of a number. An insertion into a database column fails because the data is a date and the column has a numeric data type. An expression fails to test because a column value is zero. The resulting in a mathematical operation that is not valid in Error Handling
Data conversion errors:
if a conversion results in loss of major digits. The loss of in major digits, and the truncation of strings. Data conversion errors also occur if the requested conversion is not supported in Msbi Training in Hyderabad.
Expression evaluation errors:
The expressions that evaluated at the run time perform invalid operations. Incorrect because of missing or incorrect data values.
Lookup errors:
which occur if a lookup operation fails to locate a match in the lookup table.
Use error outputs to capture row-level errors
Many data flow components support error outputs. The component handles row-level errors in both incoming and outgoing data. The component behaves when truncation or an error occurs by setting options on individual columns in the input or output.That the component should fail if customer name data truncate. But ignore errors on another column that contains less important data In MSbi Training In Hyderabad. The error output connected to the input of another transformation. The loaded into a different destination than the non-error output. The error output can be a connected to a Derived Column transformation. That provides a string for a column that is blank
Configure Error Output dialog box
The Configure Error Output dialog box error handling options for data flow transformations. That supports an error output.
Options
Input or Output
View the name of the output.
Column View
the output columns selected in the transformation editor dialog box.
Error
If applicable, specify when an error occurs. Ignore the failure, redirect the row, or fail the component.
Truncation
If applicable, specify when a truncation occurs. Ignore the failure, redirect the row, or fail the component.
Description
View the description of the operation.
Set this value to selected cells
The selected cells error or truncation occurs. Ignore the failure, redirect the row, or fail the component. Apply the error handling option to the selected cells.
Errors are either failures or truncations
Errors. An error indicates an unequivocal failure and generates a NULL result. Such errors can include data conversion errors or expression evaluation errors. A string that contains alphabetical characters to a number causes an error. Truncations. A truncation is less honest than an error. A truncation generates results that might be usable or even desirable. The select to treat truncations as errors or as acceptable conditions.
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