Re: cql query not giving any result.
CQL can't work correctly if 2 (CQL) columns have the same name. Now, to allow upgrade from thrift, CQL does use some default names like key for the Row key when there isn't anything else. Honestly I think the easiest workaround here is probably to disambiguate things manually. Typically, you could update the column family definition to set the key_alias (in CfDef) to some name that make sense for you. This will end up being the name of the Row key for CQL. You may also try issue a RENAME from CQL to rename the row key, which should work. Typically something like ALTER KunderaExamples RENAME key TO rowKey. -- Sylvain On Sat, Mar 16, 2013 at 4:39 AM, Vivek Mishra mishra.v...@gmail.com wrote: Any suggestions? -Vivek On Fri, Mar 15, 2013 at 5:20 PM, Vivek Mishra mishra.v...@gmail.comwrote: Ok. So it's a case when, CQL returns rowkey value as key and there is also column present with name as key. Sounds like a bug? -Vivek On Fri, Mar 15, 2013 at 5:17 PM, Kuldeep Mishra kuld.cs.mis...@gmail.com wrote: Hi Sylvain, I created it using thrift client, here is column family creation script, Cassandra.Client client; CfDef user_Def = new CfDef(); user_Def.name = DOCTOR; user_Def.keyspace = KunderaExamples; user_Def.setComparator_type(UTF8Type); user_Def.setDefault_validation_class(UTF8Type); user_Def.setKey_validation_class(UTF8Type); ColumnDef key = new ColumnDef(ByteBuffer.wrap(KEY.getBytes()), UTF8Type); key.index_type = IndexType.KEYS; ColumnDef age = new ColumnDef(ByteBuffer.wrap(AGE.getBytes()), UTF8Type); age.index_type = IndexType.KEYS; user_Def.addToColumn_metadata(key); user_Def.addToColumn_metadata(age); client.set_keyspace(KunderaExamples); client.system_add_column_family(user_Def); Thanks KK On Fri, Mar 15, 2013 at 4:24 PM, Sylvain Lebresne sylv...@datastax.comwrote: On Fri, Mar 15, 2013 at 11:43 AM, Kuldeep Mishra kuld.cs.mis...@gmail.com wrote: Hi, Is it possible in Cassandra to make multiple column with same name ?, like in this particular scenario I have two column with same name as key, first one is rowkey and second on is column name . No, it shouldn't be possible and that is your problem. How did you created that table? -- Sylvain Thanks and Regards Kuldeep On Fri, Mar 15, 2013 at 4:05 PM, Kuldeep Mishra kuld.cs.mis...@gmail.com wrote: Hi , Following cql query not returning any result cqlsh:KunderaExamples select * from DOCTOR where key='kuldeep'; I have enabled secondary indexes on both column. Screen shot is attached Please help -- Thanks and Regards Kuldeep Kumar Mishra +919540965199 -- Thanks and Regards Kuldeep Kumar Mishra +919540965199 -- Thanks and Regards Kuldeep Kumar Mishra +919540965199
Re: cql query not giving any result.
If this is the case, Why can't we restrict key as a keyword and not to be used as a column name? -Vivek On Mon, Mar 18, 2013 at 2:37 PM, Sylvain Lebresne sylv...@datastax.comwrote: CQL can't work correctly if 2 (CQL) columns have the same name. Now, to allow upgrade from thrift, CQL does use some default names like key for the Row key when there isn't anything else. Honestly I think the easiest workaround here is probably to disambiguate things manually. Typically, you could update the column family definition to set the key_alias (in CfDef) to some name that make sense for you. This will end up being the name of the Row key for CQL. You may also try issue a RENAME from CQL to rename the row key, which should work. Typically something like ALTER KunderaExamples RENAME key TO rowKey. -- Sylvain On Sat, Mar 16, 2013 at 4:39 AM, Vivek Mishra mishra.v...@gmail.comwrote: Any suggestions? -Vivek On Fri, Mar 15, 2013 at 5:20 PM, Vivek Mishra mishra.v...@gmail.comwrote: Ok. So it's a case when, CQL returns rowkey value as key and there is also column present with name as key. Sounds like a bug? -Vivek On Fri, Mar 15, 2013 at 5:17 PM, Kuldeep Mishra kuld.cs.mis...@gmail.com wrote: Hi Sylvain, I created it using thrift client, here is column family creation script, Cassandra.Client client; CfDef user_Def = new CfDef(); user_Def.name = DOCTOR; user_Def.keyspace = KunderaExamples; user_Def.setComparator_type(UTF8Type); user_Def.setDefault_validation_class(UTF8Type); user_Def.setKey_validation_class(UTF8Type); ColumnDef key = new ColumnDef(ByteBuffer.wrap(KEY.getBytes()), UTF8Type); key.index_type = IndexType.KEYS; ColumnDef age = new ColumnDef(ByteBuffer.wrap(AGE.getBytes()), UTF8Type); age.index_type = IndexType.KEYS; user_Def.addToColumn_metadata(key); user_Def.addToColumn_metadata(age); client.set_keyspace(KunderaExamples); client.system_add_column_family(user_Def); Thanks KK On Fri, Mar 15, 2013 at 4:24 PM, Sylvain Lebresne sylv...@datastax.com wrote: On Fri, Mar 15, 2013 at 11:43 AM, Kuldeep Mishra kuld.cs.mis...@gmail.com wrote: Hi, Is it possible in Cassandra to make multiple column with same name ?, like in this particular scenario I have two column with same name as key, first one is rowkey and second on is column name . No, it shouldn't be possible and that is your problem. How did you created that table? -- Sylvain Thanks and Regards Kuldeep On Fri, Mar 15, 2013 at 4:05 PM, Kuldeep Mishra kuld.cs.mis...@gmail.com wrote: Hi , Following cql query not returning any result cqlsh:KunderaExamples select * from DOCTOR where key='kuldeep'; I have enabled secondary indexes on both column. Screen shot is attached Please help -- Thanks and Regards Kuldeep Kumar Mishra +919540965199 -- Thanks and Regards Kuldeep Kumar Mishra +919540965199 -- Thanks and Regards Kuldeep Kumar Mishra +919540965199
Re: cql query not giving any result.
If this is the case, Why can't we restrict key as a keyword and not to be used as a column name? This is only a problem when upgrading from thrift to CQL. Forbidding key as a column name in thrift would be weird to say the least. What could be done is that CQL could, when it picks the default name it uses, pick one that is not used already. That's definitively possible and please do open a JIRA ticket for that. But at the end of the day, if you are going to use CQL, I highly suggest picking meaningful names for your CQL columns, so you will want to rename the default name that CQL picks for the row key initially. -- Sylvain -Vivek On Mon, Mar 18, 2013 at 2:37 PM, Sylvain Lebresne sylv...@datastax.comwrote: CQL can't work correctly if 2 (CQL) columns have the same name. Now, to allow upgrade from thrift, CQL does use some default names like key for the Row key when there isn't anything else. Honestly I think the easiest workaround here is probably to disambiguate things manually. Typically, you could update the column family definition to set the key_alias (in CfDef) to some name that make sense for you. This will end up being the name of the Row key for CQL. You may also try issue a RENAME from CQL to rename the row key, which should work. Typically something like ALTER KunderaExamples RENAME key TO rowKey. -- Sylvain On Sat, Mar 16, 2013 at 4:39 AM, Vivek Mishra mishra.v...@gmail.comwrote: Any suggestions? -Vivek On Fri, Mar 15, 2013 at 5:20 PM, Vivek Mishra mishra.v...@gmail.comwrote: Ok. So it's a case when, CQL returns rowkey value as key and there is also column present with name as key. Sounds like a bug? -Vivek On Fri, Mar 15, 2013 at 5:17 PM, Kuldeep Mishra kuld.cs.mis...@gmail.com wrote: Hi Sylvain, I created it using thrift client, here is column family creation script, Cassandra.Client client; CfDef user_Def = new CfDef(); user_Def.name = DOCTOR; user_Def.keyspace = KunderaExamples; user_Def.setComparator_type(UTF8Type); user_Def.setDefault_validation_class(UTF8Type); user_Def.setKey_validation_class(UTF8Type); ColumnDef key = new ColumnDef(ByteBuffer.wrap(KEY.getBytes()), UTF8Type); key.index_type = IndexType.KEYS; ColumnDef age = new ColumnDef(ByteBuffer.wrap(AGE.getBytes()), UTF8Type); age.index_type = IndexType.KEYS; user_Def.addToColumn_metadata(key); user_Def.addToColumn_metadata(age); client.set_keyspace(KunderaExamples); client.system_add_column_family(user_Def); Thanks KK On Fri, Mar 15, 2013 at 4:24 PM, Sylvain Lebresne sylv...@datastax.com wrote: On Fri, Mar 15, 2013 at 11:43 AM, Kuldeep Mishra kuld.cs.mis...@gmail.com wrote: Hi, Is it possible in Cassandra to make multiple column with same name ?, like in this particular scenario I have two column with same name as key, first one is rowkey and second on is column name . No, it shouldn't be possible and that is your problem. How did you created that table? -- Sylvain Thanks and Regards Kuldeep On Fri, Mar 15, 2013 at 4:05 PM, Kuldeep Mishra kuld.cs.mis...@gmail.com wrote: Hi , Following cql query not returning any result cqlsh:KunderaExamples select * from DOCTOR where key='kuldeep'; I have enabled secondary indexes on both column. Screen shot is attached Please help -- Thanks and Regards Kuldeep Kumar Mishra +919540965199 -- Thanks and Regards Kuldeep Kumar Mishra +919540965199 -- Thanks and Regards Kuldeep Kumar Mishra +919540965199
Re: cql query not giving any result.
Hi, Is it possible in Cassandra to make multiple column with same name ?, like in this particular scenario I have two column with same name as key, first one is rowkey and second on is column name . Thanks and Regards Kuldeep On Fri, Mar 15, 2013 at 4:05 PM, Kuldeep Mishra kuld.cs.mis...@gmail.comwrote: Hi , Following cql query not returning any result cqlsh:KunderaExamples select * from DOCTOR where key='kuldeep'; I have enabled secondary indexes on both column. Screen shot is attached Please help -- Thanks and Regards Kuldeep Kumar Mishra +919540965199 -- Thanks and Regards Kuldeep Kumar Mishra +919540965199
Re: cql query not giving any result.
Here is a list of keywords and whether or not the words are reserved. A reserved keyword cannot be used as an identifier unless you enclose the word in double quotation marks. Non-reserved keywords have a specific meaning in certain context but can be used as an identifier outside this context. http://www.datastax.com/docs/1.2/cql_cli/cql_lexicon#cql-keywords On Fri, Mar 15, 2013 at 6:43 PM, Kuldeep Mishra kuld.cs.mis...@gmail.comwrote: Hi, Is it possible in Cassandra to make multiple column with same name ?, like in this particular scenario I have two column with same name as key, first one is rowkey and second on is column name . Thanks and Regards Kuldeep On Fri, Mar 15, 2013 at 4:05 PM, Kuldeep Mishra kuld.cs.mis...@gmail.comwrote: Hi , Following cql query not returning any result cqlsh:KunderaExamples select * from DOCTOR where key='kuldeep'; I have enabled secondary indexes on both column. Screen shot is attached Please help -- Thanks and Regards Kuldeep Kumar Mishra +919540965199 -- Thanks and Regards Kuldeep Kumar Mishra +919540965199
Re: cql query not giving any result.
On Fri, Mar 15, 2013 at 11:43 AM, Kuldeep Mishra kuld.cs.mis...@gmail.comwrote: Hi, Is it possible in Cassandra to make multiple column with same name ?, like in this particular scenario I have two column with same name as key, first one is rowkey and second on is column name . No, it shouldn't be possible and that is your problem. How did you created that table? -- Sylvain Thanks and Regards Kuldeep On Fri, Mar 15, 2013 at 4:05 PM, Kuldeep Mishra kuld.cs.mis...@gmail.comwrote: Hi , Following cql query not returning any result cqlsh:KunderaExamples select * from DOCTOR where key='kuldeep'; I have enabled secondary indexes on both column. Screen shot is attached Please help -- Thanks and Regards Kuldeep Kumar Mishra +919540965199 -- Thanks and Regards Kuldeep Kumar Mishra +919540965199
Re: cql query not giving any result.
Hi Sylvain, I created it using thrift client, here is column family creation script, Cassandra.Client client; CfDef user_Def = new CfDef(); user_Def.name = DOCTOR; user_Def.keyspace = KunderaExamples; user_Def.setComparator_type(UTF8Type); user_Def.setDefault_validation_class(UTF8Type); user_Def.setKey_validation_class(UTF8Type); ColumnDef key = new ColumnDef(ByteBuffer.wrap(KEY.getBytes()), UTF8Type); key.index_type = IndexType.KEYS; ColumnDef age = new ColumnDef(ByteBuffer.wrap(AGE.getBytes()), UTF8Type); age.index_type = IndexType.KEYS; user_Def.addToColumn_metadata(key); user_Def.addToColumn_metadata(age); client.set_keyspace(KunderaExamples); client.system_add_column_family(user_Def); Thanks KK On Fri, Mar 15, 2013 at 4:24 PM, Sylvain Lebresne sylv...@datastax.comwrote: On Fri, Mar 15, 2013 at 11:43 AM, Kuldeep Mishra kuld.cs.mis...@gmail.com wrote: Hi, Is it possible in Cassandra to make multiple column with same name ?, like in this particular scenario I have two column with same name as key, first one is rowkey and second on is column name . No, it shouldn't be possible and that is your problem. How did you created that table? -- Sylvain Thanks and Regards Kuldeep On Fri, Mar 15, 2013 at 4:05 PM, Kuldeep Mishra kuld.cs.mis...@gmail.com wrote: Hi , Following cql query not returning any result cqlsh:KunderaExamples select * from DOCTOR where key='kuldeep'; I have enabled secondary indexes on both column. Screen shot is attached Please help -- Thanks and Regards Kuldeep Kumar Mishra +919540965199 -- Thanks and Regards Kuldeep Kumar Mishra +919540965199 -- Thanks and Regards Kuldeep Kumar Mishra +919540965199
Re: cql query not giving any result.
Ok. So it's a case when, CQL returns rowkey value as key and there is also column present with name as key. Sounds like a bug? -Vivek On Fri, Mar 15, 2013 at 5:17 PM, Kuldeep Mishra kuld.cs.mis...@gmail.comwrote: Hi Sylvain, I created it using thrift client, here is column family creation script, Cassandra.Client client; CfDef user_Def = new CfDef(); user_Def.name = DOCTOR; user_Def.keyspace = KunderaExamples; user_Def.setComparator_type(UTF8Type); user_Def.setDefault_validation_class(UTF8Type); user_Def.setKey_validation_class(UTF8Type); ColumnDef key = new ColumnDef(ByteBuffer.wrap(KEY.getBytes()), UTF8Type); key.index_type = IndexType.KEYS; ColumnDef age = new ColumnDef(ByteBuffer.wrap(AGE.getBytes()), UTF8Type); age.index_type = IndexType.KEYS; user_Def.addToColumn_metadata(key); user_Def.addToColumn_metadata(age); client.set_keyspace(KunderaExamples); client.system_add_column_family(user_Def); Thanks KK On Fri, Mar 15, 2013 at 4:24 PM, Sylvain Lebresne sylv...@datastax.comwrote: On Fri, Mar 15, 2013 at 11:43 AM, Kuldeep Mishra kuld.cs.mis...@gmail.com wrote: Hi, Is it possible in Cassandra to make multiple column with same name ?, like in this particular scenario I have two column with same name as key, first one is rowkey and second on is column name . No, it shouldn't be possible and that is your problem. How did you created that table? -- Sylvain Thanks and Regards Kuldeep On Fri, Mar 15, 2013 at 4:05 PM, Kuldeep Mishra kuld.cs.mis...@gmail.com wrote: Hi , Following cql query not returning any result cqlsh:KunderaExamples select * from DOCTOR where key='kuldeep'; I have enabled secondary indexes on both column. Screen shot is attached Please help -- Thanks and Regards Kuldeep Kumar Mishra +919540965199 -- Thanks and Regards Kuldeep Kumar Mishra +919540965199 -- Thanks and Regards Kuldeep Kumar Mishra +919540965199
Re: cql query not giving any result.
Any suggestions? -Vivek On Fri, Mar 15, 2013 at 5:20 PM, Vivek Mishra mishra.v...@gmail.com wrote: Ok. So it's a case when, CQL returns rowkey value as key and there is also column present with name as key. Sounds like a bug? -Vivek On Fri, Mar 15, 2013 at 5:17 PM, Kuldeep Mishra kuld.cs.mis...@gmail.comwrote: Hi Sylvain, I created it using thrift client, here is column family creation script, Cassandra.Client client; CfDef user_Def = new CfDef(); user_Def.name = DOCTOR; user_Def.keyspace = KunderaExamples; user_Def.setComparator_type(UTF8Type); user_Def.setDefault_validation_class(UTF8Type); user_Def.setKey_validation_class(UTF8Type); ColumnDef key = new ColumnDef(ByteBuffer.wrap(KEY.getBytes()), UTF8Type); key.index_type = IndexType.KEYS; ColumnDef age = new ColumnDef(ByteBuffer.wrap(AGE.getBytes()), UTF8Type); age.index_type = IndexType.KEYS; user_Def.addToColumn_metadata(key); user_Def.addToColumn_metadata(age); client.set_keyspace(KunderaExamples); client.system_add_column_family(user_Def); Thanks KK On Fri, Mar 15, 2013 at 4:24 PM, Sylvain Lebresne sylv...@datastax.comwrote: On Fri, Mar 15, 2013 at 11:43 AM, Kuldeep Mishra kuld.cs.mis...@gmail.com wrote: Hi, Is it possible in Cassandra to make multiple column with same name ?, like in this particular scenario I have two column with same name as key, first one is rowkey and second on is column name . No, it shouldn't be possible and that is your problem. How did you created that table? -- Sylvain Thanks and Regards Kuldeep On Fri, Mar 15, 2013 at 4:05 PM, Kuldeep Mishra kuld.cs.mis...@gmail.com wrote: Hi , Following cql query not returning any result cqlsh:KunderaExamples select * from DOCTOR where key='kuldeep'; I have enabled secondary indexes on both column. Screen shot is attached Please help -- Thanks and Regards Kuldeep Kumar Mishra +919540965199 -- Thanks and Regards Kuldeep Kumar Mishra +919540965199 -- Thanks and Regards Kuldeep Kumar Mishra +919540965199
