Fix Msg 241 “Conversion failed when converting date and/or time from character string” in SQL Server

If you’re getting SQL Server error Msg 241 that reads Conversion failed when converting date and/or time from character string, it’s probably because you’re trying to convert a string to a date/time value, but that particular string can’t be converted to the date/time type specified.

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Fix Msg 529 “Explicit conversion from data type int to xml is not allowed” in SQL Server

If you’re getting SQL Server error Msg 529 that reads something like Explicit conversion from data type int to xml is not allowed, it’s probably because you’re trying to perform a data type conversion that’s not permitted.

SQL Server doesn’t allow certain conversions. If you try to perform such a conversion, you’ll get this error.

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Fix Msg 8117 “Operand data type varchar is invalid for sum operator” in SQL Server

If you’re getting SQL Server error Msg 8117 with the message Operand data type varchar is invalid for sum operator, it’s because you’re passing the wrong data type to an operator or function.

In this case, the error indicates that we’re passing a string to the SUM() function. The SUM() function does not operate on strings. It only works on numeric types.

The same error (Msg 8117) can also occur in other contexts – it’s not limited to the SUM() function.

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Fix Msg 8116 “Argument data type date is invalid for argument 1 of substring function” in SQL Server

If you’re getting SQL Server error Msg 8116 with text that reads Argument data type date is invalid for argument 1 of substring function, it’s because you’re passing the wrong data type to a function – in this case, the SUBSTRING() function.

You could also see the same error (Msg 8116) in many other contexts – it’s not limited to the SUBSTRING() function.

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Fix Msg 8114 “Error converting data type varchar to numeric” in SQL Server

If you’re getting SQL Server error Msg 8114 that reads something like Error converting data type varchar to numeric, it’s probably because you’re trying to perform a data type conversion that fails due to the value not being able to be converted to the destination type.

It’s not because you can’t convert that type to the new type. It’s because of the value itself.

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Fix “Arithmetic overflow error converting int to data type numeric” in SQL Server

If you’re receiving error Msg 8115, Level 16, Arithmetic overflow error converting int to data type numeric in SQL Server, it’s probably because you’re performing an operation that results in a data conversion error due to an out of range value.

This will often happen when you try to convert a number to a different data type, but it’s out of the accepted range for the new data type.

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Fix “Arithmetic overflow error converting expression to data type int” in SQL Server

If you’re receiving error Msg 8115, Level 16, Arithmetic overflow error converting expression to data type int in SQL Server, it could be that you’re performing a calculation that results in an out of range value.

This can happen when you use a function such as SUM() on a column, and the calculation results in a value that’s outside the range of the column’s type.

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Fix “Arithmetic overflow error converting IDENTITY to data type…” in SQL Server

If you’re getting error “Msg 8115, Level 16 Arithmetic overflow error converting IDENTITY to data type…” error in SQL Server, it’s probably because you’re trying to insert data into a table when its IDENTITY column has reached its data type’s limit.

An IDENTITY column automatically increments the value that’s inserted with each new row. If the value being inserted is out of the range of the column’s data type, then the above error will occur.

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