client-adapter/rdb/src/main/java/com/alibaba/otter/canal/client/adapter/rdb/service/RdbEtlService.java [178:192]:
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    private static void appendCondition(DbMapping dbMapping, StringBuilder sql, Map<String, Object> values,
                                        ResultSet rs, String backtick) throws SQLException {
        // 拼接主键
        for (Map.Entry<String, String> entry : dbMapping.getTargetPk().entrySet()) {
            String targetColumnName = entry.getKey();
            String srcColumnName = entry.getValue();
            if (srcColumnName == null) {
                srcColumnName = targetColumnName;
            }
            sql.append(backtick).append(targetColumnName).append(backtick).append("=? AND ");
            values.put(targetColumnName, rs.getObject(srcColumnName));
        }
        int len = sql.length();
        sql.delete(len - 4, len);
    }
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client-adapter/clickhouse/src/main/java/com/alibaba/otter/canal/client/adapter/clickhouse/service/ClickHouseEtlService.java [182:196]:
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    private static void appendCondition(DbMapping dbMapping, StringBuilder sql, Map<String, Object> values,
                                        ResultSet rs, String backtick) throws SQLException {
        // 拼接主键
        for (Map.Entry<String, String> entry : dbMapping.getTargetPk().entrySet()) {
            String targetColumnName = entry.getKey();
            String srcColumnName = entry.getValue();
            if (srcColumnName == null) {
                srcColumnName = targetColumnName;
            }
            sql.append(backtick).append(targetColumnName).append(backtick).append("=? AND ");
            values.put(targetColumnName, rs.getObject(srcColumnName));
        }
        int len = sql.length();
        sql.delete(len - 4, len);
    }
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