Rewrite the title to: By getting the id of the ResultSet and returning it as a java.sql.Array-PHP Chinese Network Q&A

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Rewrite the title to: By getting the id of the ResultSet and returning it as a java.sql.Array

P粉905144514 2023-09-03 18:10:50

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I have the following: <pre class="brush:scala;toolbar:false;"> def getIds(name: String): java.sql.Array = { val ids: Array[Integer] = Array() val ps: PreparedStatement = connection.prepareStatement("SELECT id FROM table WHERE name = ?") ps.setString(1, name) val resultSet = ps.executeQuery() while(resultSet.next()) { val currentId = resultSet.getInt(1) ids: currentId } return connection.createArrayOf("INTEGER", ids.toArray) } </pre> My intention is to use the output of this method into another PreparedStatement, using <code>.setArray(1, <array>)</code> But I get the following error: <code>java.sql.SQLFeatureNotSupportedException</code> I'm using MySQL. Already tried INTEGER, INT, BIGINT. But all failed.

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P粉2657249302023-09-04 14:49:07 1 floor

The translated content is:

After research, we found:

So my solution is to create a temporary table containing only the ids:

val idsStatement = connection.prepareStatement(
   "CREATE TEMPORARY TABLE to_delete_ids SELECT id FROM table WHERE name = ?")
idsStatement.setString(1, name)
idsStatement.executeUpdate()

Then do an inner join with other statements/queries to achieve the same result:

val statementDeleteUsingIds = connection.prepareStatement(
    "DELETE to_delete_rows FROM table2 to_delete_rows INNER JOIN to_delete_ids tdi ON tdi.id = to_delete_rows.other_tables_id")
statementDeleteUsingIds.executeUpdate()