Why Am I Getting MySQL Error 1292: Truncated Incorrect DOUBLE Value Even Without Using Doubles?

Error Code 1292: Truncated Incorrect DOUBLE Value in MySQL

Encountering error code 1292 can be frustrating, particularly when you insist that you haven't used any double values. Let's delve into the problem and explore a potential solution.

In the provided query, you're trying to populate a table with values from another table using an INSERT...SELECT statement. One crucial detail is to ensure that the data types and their sizes in both tables match.

Specifically, in the error message, you'll see that there's an incorrect DOUBLE value involved. However, you mentioned that you don't have any double fields in your tables. Here's the potential culprit:

ta.phone_number

This field is likely not a double but rather a VARCHAR or CHAR in both tables. When you perform calculations or comparisons involving numeric values in strings, such as in the WHERE clause for length matching, MySQL may attempt to convert the string to a numeric value, resulting in a truncated incorrect DOUBLE value.

To resolve this issue, you have two options:

1. Ensure that the data types in both tables for the phone_number field match, such as by converting it to a CHAR or VARCHAR in both tables.
2. Alternatively, explicitly convert the phone_number field to a numeric data type in the query using the CAST() function:

CAST(REPLACE(REPLACE(REPLACE(REPLACE(ta.phone_number, '-', ''), ' ', ''), ')', ''),'(','') AS UNSIGNED) = 10

By converting the phone_number to an UNSIGNED numeric type, MySQL can properly perform numerical comparisons without converting it to a DOUBLE value.

By addressing this data type discrepancy, you can avoid the truncated incorrect DOUBLE value error and ensure a successful data transfer.

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