seatunnel-datasource/seatunnel-datasource-plugins/datasource-jdbc-redshift/src/main/java/org/apache/seatunnel/datasource/plugin/redshift/jdbc/RedshiftDataSourceChannel.java [156:163]:
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    private String getPrimaryKey(DatabaseMetaData metaData, String dbName, String tableName)
            throws SQLException {
        ResultSet primaryKeysInfo = metaData.getPrimaryKeys(dbName, "%", tableName);
        while (primaryKeysInfo.next()) {
            return primaryKeysInfo.getString("COLUMN_NAME");
        }
        return null;
    }
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seatunnel-datasource/seatunnel-datasource-plugins/datasource-jdbc-tidb/src/main/java/org/apache/seatunnel/datasource/plugin/tidb/jdbc/TidbJdbcDataSourceChannel.java [159:166]:
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    private String getPrimaryKey(DatabaseMetaData metaData, String dbName, String tableName)
            throws SQLException {
        ResultSet primaryKeysInfo = metaData.getPrimaryKeys(dbName, "%", tableName);
        while (primaryKeysInfo.next()) {
            return primaryKeysInfo.getString("COLUMN_NAME");
        }
        return null;
    }
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seatunnel-datasource/seatunnel-datasource-plugins/datasource-jdbc-starrocks/src/main/java/org/apache/seatunnel/datasource/plugin/starrocks/jdbc/StarRocksJdbcDataSourceChannel.java [152:159]:
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    private String getPrimaryKey(DatabaseMetaData metaData, String dbName, String tableName)
            throws SQLException {
        ResultSet primaryKeysInfo = metaData.getPrimaryKeys(dbName, "%", tableName);
        while (primaryKeysInfo.next()) {
            return primaryKeysInfo.getString("COLUMN_NAME");
        }
        return null;
    }
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seatunnel-datasource/seatunnel-datasource-plugins/datasource-jdbc-oracle/src/main/java/org/apache/seatunnel/datasource/plugin/oracle/jdbc/OracleDataSourceChannel.java [216:223]:
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    private String getPrimaryKey(DatabaseMetaData metaData, String dbName, String tableName)
            throws SQLException {
        ResultSet primaryKeysInfo = metaData.getPrimaryKeys(dbName, "%", tableName);
        while (primaryKeysInfo.next()) {
            return primaryKeysInfo.getString("COLUMN_NAME");
        }
        return null;
    }
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seatunnel-datasource/seatunnel-datasource-plugins/datasource-jdbc-mysql/src/main/java/org/apache/seatunnel/datasource/plugin/mysql/jdbc/MysqlJdbcDataSourceChannel.java [170:177]:
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    private String getPrimaryKey(DatabaseMetaData metaData, String dbName, String tableName)
            throws SQLException {
        ResultSet primaryKeysInfo = metaData.getPrimaryKeys(dbName, "%", tableName);
        while (primaryKeysInfo.next()) {
            return primaryKeysInfo.getString("COLUMN_NAME");
        }
        return null;
    }
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seatunnel-datasource/seatunnel-datasource-plugins/datasource-jdbc-postgresql/src/main/java/org/apache/seatunnel/datasource/plugin/postgresql/jdbc/PostgresqlDataSourceChannel.java [200:207]:
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    private String getPrimaryKey(DatabaseMetaData metaData, String dbName, String tableName)
            throws SQLException {
        ResultSet primaryKeysInfo = metaData.getPrimaryKeys(dbName, "%", tableName);
        while (primaryKeysInfo.next()) {
            return primaryKeysInfo.getString("COLUMN_NAME");
        }
        return null;
    }
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seatunnel-datasource/seatunnel-datasource-plugins/datasource-mysql-cdc/src/main/java/org/apache/seatunnel/datasource/plugin/cdc/mysql/MysqlCDCDataSourceChannel.java [246:253]:
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    private String getPrimaryKey(DatabaseMetaData metaData, String dbName, String tableName)
            throws SQLException {
        ResultSet primaryKeysInfo = metaData.getPrimaryKeys(dbName, "%", tableName);
        while (primaryKeysInfo.next()) {
            return primaryKeysInfo.getString("COLUMN_NAME");
        }
        return null;
    }
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seatunnel-datasource/seatunnel-datasource-plugins/datasource-jdbc-clickhouse/src/main/java/org/apache/seatunnel/datasource/plugin/clickhouse/jdbc/ClickhouseJdbcDataSourceChannel.java [153:160]:
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    private String getPrimaryKey(DatabaseMetaData metaData, String dbName, String tableName)
            throws SQLException {
        ResultSet primaryKeysInfo = metaData.getPrimaryKeys(dbName, "%", tableName);
        while (primaryKeysInfo.next()) {
            return primaryKeysInfo.getString("COLUMN_NAME");
        }
        return null;
    }
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