通过JDBC执行INSERT IGNORE时获取重复计数 [英] Getting duplicate count when executing INSERT IGNORE via JDBC

问题描述

通过JDBC执行MySQL"INSERT IGNORE"语句时，是否可以获得重复计数?

Is it possible to get the duplicate count when executing MySQL "INSERT IGNORE" statement via JDBC?

例如，当我在mysql命令行上执行INSERT IGNORE语句时，如果重复，则会得到类似

For example, when I execute an INSERT IGNORE statement on the mysql command line, and there are duplicates I get something like

查询正常，受影响的0行(0.02秒) 记录:1重复项:1警告:0

Query OK, 0 rows affected (0.02 sec) Records: 1 Duplicates: 1 Warnings: 0

请注意在其上显示重复项:1"的地方，表示存在被忽略的重复项.

Note where it says "Duplicates: 1", indicating that there were duplicates that were ignored.

通过JDBC执行查询时是否可以获得相同的信息?

Is it possible to get the same information when executing the query via JDBC?

谢谢.

推荐答案

在执行INSERT IGNORE时，可以使用ROW_COUNT()和FOUND_ROWS()函数来确定插入的行和重复项的数量.

You can use the ROW_COUNT() and FOUND_ROWS() functions to determine the number of inserted rows and duplicates when doing INSERT IGNORE.

例如:

SELECT ROW_COUNT(), FOUND_ROWS()
    INTO myRowCount, myFoundRows;
myInsertedRows = myRowCount;
myDuplicateRows =  myFoundRows - myInsertedRows;
COMMIT;

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