PreparedStatementCallback数据截断异常排查求助

Hey there! Let's break down this DataTruncation error you're hitting—it's almost always tied to data from your problematic database not fitting into the defined size limits of either your stored procedure parameters or the target table columns it interacts with. Since the code works fine on three other databases, your hunch about it being a data/DB configuration issue is totally spot-on.

Here's how to diagnose and fix this: #

1. Compare stored procedure parameter definitions across databases

   • Check the de_table stored procedure in all four databases. Pay close attention to the data types and their limits for each of the 8 parameters you're passing (e.g., VARCHAR(50) vs VARCHAR(100), INT vs BIGINT, date range constraints). It’s likely that one parameter in the problematic DB has a smaller limit than the others, and your data is exceeding that threshold.

2. Inspect the actual parameter values from your failing request

   • Pull the real values of exampleTable.getSite(), exampleTable.getGroupType(), etc., that are being passed when the error occurs. Focus on:
     • String values: Are any of them longer than the corresponding parameter/column length in the problematic DB? For example, a site value that's 60 characters long when the DB expects a max of 50.
     • Numeric values: Could exampleTable.getMaxRowCount() be larger than the INT limit (2,147,483,647) if the parameter is defined as INT instead of BIGINT?
     • Date values: Ensure startDate/endDate fall within the valid range for the DB's date type (though truncation errors here are less common than with strings/numbers).

3. Verify how % wildcards are handled in the stored procedure

   • Since you're using % to fetch all related values, check if the stored procedure is doing any string concatenation or data transformation that could create intermediate values exceeding column limits. For example, if it's building a filter string with % and other inputs, that combined string might be too long for a target column in the problematic DB.

4. Check the target table's column definitions

   • Even if the stored procedure parameters look correct, the procedure might be inserting/updating data into a table with stricter column size limits in the problematic DB. Compare the schema of the table that de_table writes to across all four databases to spot discrepancies.

Quick Test to Isolate the Issue #

Take the exact parameter values from your failing request and run the stored procedure directly in the problematic database (using a SQL client like SSMS or DBeaver):

EXEC de_table 'actual_site_value', 'group_type_value', 'group_item_value', 'service_value', 'type_value', 'subservice_value', '2020-02-15 23:59:59', max_row_count_value;

If the error reproduces, start replacing parameters one by one with values that work in other databases to pinpoint exactly which parameter is causing the truncation.

内容的提问来源于stack exchange，提问作者ROBERT MCGUABBE