MS Access Group Concatenation: Is There a Built-in Solution, and What Are the Alternatives?

Concatenating Values in MS Access: Is There a Group_Concat Function?

Many programming languages provide a group_concat function for combining multiple values into a single string. However, MS Access does not have an equivalent function.

Alternative Solutions

There are several alternatives to using group_concat in MS Access:

• Allen Browne's custom function: Allen Browne, a well-respected Access expert, has created a custom function called Join that can be used for group concatenation.
• Manual concatenation using VBA: If a generic solution is not required, values can be concatenated manually using VBA code. A loop can be used to iterate over the values and append them to a string variable.

Using a Delimiter Trick

When concatenating values in VBA code, consider using a leading delimiter for each value. This simplifies the concatenation process and eliminates the need for conditional statements. After iterating through the values, the leading delimiter can be removed using the Mid function.

Conclusion

While MS Access does not have a built-in group_concat function, the alternatives mentioned above provide effective solutions for combining multiple values. The delimiter trick can further simplify the concatenation process in VBA code.

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