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https://issues.apache.org/jira/browse/HIVE-18268?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Choi JaeHwan updated HIVE-18268:
--------------------------------
Status: Patch Available (was: Open)
> Hive Prepared Statement when split with double quoted in query fails
> --------------------------------------------------------------------
>
> Key: HIVE-18268
> URL: https://issues.apache.org/jira/browse/HIVE-18268
> Project: Hive
> Issue Type: Bug
> Components: JDBC
> Affects Versions: 2.3.2
> Reporter: Choi JaeHwan
> Assignee: Choi JaeHwan
> Fix For: 2.3.3
>
> Attachments: HIVE-18268.1.ptach, HIVE-18268.patch
>
>
> HIVE-13625, Change sql statement split when odd number of escape characters,
> and add parameter counter validation, above
> {code:java}
> // prev code
> StringBuilder newSql = new StringBuilder(parts.get(0));
> for(int i=1;i<parts.size();i++){
> if(!parameters.containsKey(i)){
> throw new SQLException("Parameter #"+i+" is unset");
> }
> newSql.append(parameters.get(i));
> newSql.append(parts.get(i));
> }
> // change from HIVE-13625
> int paramLoc = 1;
> while (getCharIndexFromSqlByParamLocation(sql, '?', paramLoc) > 0) {
> // check the user has set the needs parameters
> if (parameters.containsKey(paramLoc)) {
> int tt = getCharIndexFromSqlByParamLocation(newSql.toString(), '?',
> 1);
> newSql.deleteCharAt(tt);
> newSql.insert(tt, parameters.get(paramLoc));
> }
> paramLoc++;
> }
> {code}
> If the number of split SQL and the number of parameters are not matched, an
> SQLException is thrown
> Currently, when splitting SQL, there is no processing for double quoted, and
> when the token ('?' ) is between double quote, SQL is split.
> i think when the token between double quoted is literal, it is correct to not
> split.
> for example, above the query;
> {code:java}
> // Some comments here
> 1: String query = " select 1 from x where qa="?" "
> 2: String query = " SELECT 1 FROM `x` WHERE (trecord LIKE "ALA[d_?]%")
> {code}
> ? is literal, then query do not split.
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