How to solve Data truncated? - sql

Question

I insert the data from CSV file into MySql database, especially into one table.
I use CSVRead, and the CSV file format is :
ts,val
2013-03-31T23:45:00-04:00 New_York,10
And the table is hisdata(ts, val).
Here is my code:
try{
try {
CSVReader reader = new CSVReader(new FileReader(csvFile));
List<String[]> csvList;
csvList = reader.readAll();
System.out.println("Start: size is " + csvList.size());
for(int i = 0; i<csvList.size(); i++){
String[] eachStr = csvList.get(i);
int j = 0;
//insert(ts, val) into hisdata of sql
String sql = "INSERT INTO hisdata" + "(ts, val)" + " VALUES"
+ "('" + eachStr[j] + "', '" + eachStr[j+1] + "')";
Statement st = (Statement) conn.createStatement();
count = st.executeUpdate(sql);
}
System.out.println("access table is inserted: " + count
+ " records");
reader.close();
} catch(IOException e){
System.out.println("Error: " + e.getMessage());
}
conn.close();
} catch (SQLException e) {
System.out.println("insert is failure " + e.getMessage());
}
I think probably, the import data is too large. When I did size(), size is 8835.
Basically, I set connector. Then read CSV file and insert data line by line. Finally, I closed reader and connection.
Here is the Console print out:
Sql Connection starts
Driver loaded
Database connected
Start: size is 8835
insert is failure Data truncated for column 'val' at row 1
Is the problem the data is too large.
Please give help to solve this problem.

Answer 1

Add System.out.println(sql); execute the result in mysql.
if data is too large, increase column length, or get column length then reduce your data with substring.