From Java I am doing the following query on DB2:
SELECT * FROM PRV_PRE_ACTIVATION WHERE TRANSACTION_ID = ?
The field TRANSACTION_ID is a VARCHAR of length 32. I set the parameter in the preparedStatement using the setString method.
I get the error:
com.ibm.db2.jcc.am.SqlSyntaxErrorException: DB2 SQL Error: SQLCODE=-270, SQLSTATE=42997, SQLERRMC=63, DRIVER=3.59.81
at com.ibm.db2.jcc.am.dd.a(dd.java:676)
at com.ibm.db2.jcc.am.dd.a(dd.java:60)
at com.ibm.db2.jcc.am.dd.a(dd.java:127)
at com.ibm.db2.jcc.am.bn.c(bn.java:2546)
at com.ibm.db2.jcc.am.bn.d(bn.java:2534)
at com.ibm.db2.jcc.am.bn.a(bn.java:2026)
at com.ibm.db2.jcc.t4.cb.g(cb.java:140)
at com.ibm.db2.jcc.t4.cb.a(cb.java:40)
at com.ibm.db2.jcc.t4.q.a(q.java:32)
at com.ibm.db2.jcc.t4.rb.i(rb.java:135)
at com.ibm.db2.jcc.am.bn.gb(bn.java:1997)
at com.ibm.db2.jcc.am.cn.pc(cn.java:3009)
at com.ibm.db2.jcc.am.cn.b(cn.java:3786)
at com.ibm.db2.jcc.am.cn.bc(cn.java:678)
at com.ibm.db2.jcc.am.cn.executeQuery(cn.java:652)
Where the sqstate means "Capability is not supported by this version of the DB2 application requester, DB2 application server, or the combination of the two." But I don't use any strange functionality.
I have tried using an squ client the query:
SELECT * FROM PRV_PRE_ACTIVATION where transaction_id='A'
And it goes ok.
What is the cause of the problem?
UPDATE: The code where the statement is prepared:
s = con.prepareStatement(sSQL,
ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_UPDATABLE);
Try changing to a specified list of columns in the select list -- my guess is you have a user defined column type (or some other type) which is not supported by your driver. For example, does the statement
SELECT TRANSACTION_ID FROM PRV_PRE_ACTIVATION WHERE TRANSACTION_ID = ?
work? If so then start adding columns in and you will find the problem column.
I've came across this problem lately, and after some searching on web, I've came across this link:
DB2 SQL error: SQLCODE: -270, SQLSTATE: 42997, SQLERRMC: 63
, which specifies this:
A column with a LOB type, distinct type on a LOB type, or
structured type cannot be specified in the select-list of an
insensitive scrollable cursor.
With help from an colleague, we came to this conclusion:
1, Q: When will you get this "SQLCODE=-204, SQLSTATE=42704" exception?
A: When a scrollable PreparedStatement is prepared & executed, yet there are [B|C]LOB fields exist in the select list. e.g.:
String strQuery = "SELECT NUMBER_FIELD, CHAR_FIELD, CLOB_FIELD FROM TABLE_NAME WHERE CONDITION IS TRUE;"
Statement stmt = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, REsultSet.CONCUR_READ_ONLY);
rs = stmt.executeQuery(strQuery); //and this exception will be thrown here
2, Q: So what's the solution if we want to get rid of it when [B|C]LOB fields are queried?
A: Try to use ResultSet.TYPE_FORWARD_ONLY while creating the query statement.e.g.:
stmt = conn.createStatement(ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY);
Or simply try this one:
stmt = conn.createStatement();
Note that the same rules apply to conn.prepareStatement() too. You may refer to Java API doc for more information.
Related
This question already has an answer here:
DB2 error Improper use of a string column, host variable, constant, or function
(1 answer)
Closed 8 months ago.
I´ve been facing some weird issues when studding SQL raw queries using SqlAlchemy.
sqlstr = 'SELECT "City" from CHICAGO_SCHOOLS;'
with engine.connect() as conn:
result = conn.execute(text(sqlstr))
print (result.all())
The query above returns hundreds of "Chicago" as results. So I just tried to get unique results:
sqlstr = 'SELECT DISTINCT "City" from CHICAGO_SCHOOLS;'
with engine.connect() as conn:
result = conn.execute(text(sqlstr))
print (result.all())
Now, all I got is a weird error :
Exception: SQLNumResultCols failed: [IBM][CLI Driver][DB2/LINUXX8664]
SQL0134N Improper use of a string column, host variable, constant, or
function "City". SQLSTATE=42907
At first I thought it was somehow related to the DISTINCT set quantifier. So I tried the same query with another column.
sqlstr = 'SELECT DISTINCT "School ID" from CHICAGO_SCHOOLS;'
with engine.connect() as conn:
result = conn.execute(text(sqlstr))
print (result.all())
And in this query I got all expected results.
I am not being able to truly understand what is wrong!
The issue was related to the column type. It was a CLOB type and that does not allow use of DISTINCT. Thanks to HoneyBadger
I am using spring boot and spring data JPA with a Postgres database. There is a weird behaviour that happens when query something and the result is nothing.
In a lot of databases and projects when I make a query and the result was empty the returned object to java was null.
For example:
#Query(value = "select * from notification where WEBCODE = :webCode OR USERNAME = :username", nativeQuery = true)
Page<NotificationSQL> getNotificationsAsPage(#Param( "webCode" ) String webCode,#Param( "username" ) String username, Pageable pageable);
In this case I was suppose to get a null page. but in this case I am receiving an exception
org.springframework.dao.InvalidDataAccessResourceUsageException: could not extract ResultSet; SQL [n/a]; nested exception is org.hibernate.exception.SQLGrammarException: could not extract ResultSet
at org.springframework.orm.jpa.vendor.HibernateJpaDialect.convertHibernateAccessException(HibernateJpaDialect.java:259)
...
Caused by: org.postgresql.util.PSQLException: ERROR: operator does not exist: character varying = bytea
Hint: No operator matches the given name and argument types. You might need to add explicit type casts.
Position: 42
at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2552)
I do not understand why it does not just return a null object. It happens the same with the rest of the queries when empty rows and different objects as List classes. In a lot of projects this has not happen to me, the returned object when the query was right and empty rows was a null.
If the parameters are not null it works perfect, but the point is that these parameters sometimes are null and , as it can be seen in the image, the query works nice but with a result of empty rows.
Thanks in advance
I need to find out the schema of a given JSON file, I see sql has schema_of_json function
and something like this works flawlessly
> SELECT schema_of_json('[{"col":0}]');
ARRAY<STRUCT<`col`: BIGINT>>
But if I query for my table name, it gives me the following error
>SELECT schema_of_json(Transaction) as json_data from table_name;
Error in SQL statement: AnalysisException: cannot resolve 'schemaofjson(`Transaction`)' due to data type mismatch: The input json should be a string literal and not null; however, got `Transaction`.; line 1 pos 7;
The Transaction is one of the columns in my table and after checking it manually I can attest that it is of String type(json).
The SQL statement has it to give me the schema of the JSON, how to do it?
after looking further into the documentation that it is clear that the word foldable means that of the static one, and a column from a table JSON won't work
for minimal reroducible example here you go:
SELECT schema_of_json(CAST('{ "a": "b" }' AS STRING))
As soon as the cast is introduced in the above statement, the schema_of_json will fail......... It needs a static JSON as it's input
A proprietary third-party application stores JSON strings in it's database like this one:
{"state":"complete","timestamp":1614776473000}
I need the timestamp and found out that
DB2 offers JSON functions. Since it's stored as string in the PROF_VALUE column, I guess that converting with SYSTOOLS.JSON2BSON is required, before I can use JSON_VAL to fetch the timestamp:
SELECT SYSTOOLS.JSON_VAL(SYSTOOLS.JSON2BSON(PROF_VALUE), "timestamp", "f")
FROM EMPINST.PROFILE_EXTENSIONS ext
WHERE PROF_PROPERTY_ID = 'touchpointState'
This causes an error that timestamp is invalid in the used context ( SQLCODE=-206, SQLSTATE=42703, DRIVER=4.26.14). The same error is thown when I remove the JSON2BSON call like this
SELECT SYSTOOLS.JSON_VAL(PROF_VALUE, "timestamp", "f")
Also not working with the same error (different data-types):
SELECT SYSTOOLS.JSON_VAL(SYSTOOLS.JSON2BSON(PROF_VALUE), "state", "s:1000")
SELECT SYSTOOLS.JSON_VAL(PROF_VALUE) "state", "s:1000")
I don't understand this error. My syntax is like the documented JSON_VAL ( json-value , search-string , result-type) and it is the same like in the examples, where they show how to fetch the name field of an object.
I also played around a bit with JSON_TABLE to use raw input data for testing (instead of the database data), but it seems not suiteable for that.
SELECT *
FROM TABLE(SYSTOOLS.JSON_TABLE( SYSTOOLS.JSON2BSON('{"state":"complete","timestamp":1614776473000}'), 'state','s:32')) DATA
This gave me a table with one row: Type = 2 and Value = complete.
I had two problems in my query: First it seems that double quotes " are for object references. I wasn't aware that there is any difference, because in most databases I used yet, both single ' and double quotes " are equal.
The second problem is, that JSON_VAL needs to be called without SYSTOOLS, but the reference is still needed on SYSTOOLS.JSON2BSON(PROF_VALUE).
With those changes, the following query worked:
SELECT JSON_VAL(SYSTOOLS.JSON2BSON(PROF_VALUE), 'timestamp', 'f')
FROM EMPINST.PROFILE_EXTENSIONS ext
WHERE PROF_PROPERTY_ID = 'touchpointState'
I have a problem with BIRT when I try to pass multiple values from report parameter.
I'm using BIRT 2.6.2 and eclipse.
I'm trying to put multiple values from cascading parameter group last parameter "JDSuser". The parameter is allowed to have multiple values and I'm using list box.
In order to be able to do that I'm writing my sql query with where-in statement where I replace text with javascript. Otherwise BIRT sql can't get multiple values from report parameter.
My sql query is
select jamacomment.createdDate, jamacomment.scopeId,
jamacomment.commentText, jamacomment.documentId,
jamacomment.highlightQuote, jamacomment.organizationId,
jamacomment.userId,
organization.id, organization.name,
userbase.id, userbase.firstName, userbase.lastName,
userbase.organization, userbase.userName,
document.id, document.name, document.description,
user_role.userId, user_role.roleId,
role.id, role.name
from jamacomment jamacomment left join
userbase on userbase.id=jamacomment.userId
left join organization on
organization.id=jamacomment.organizationId
left join document on
document.id=jamacomment.documentId
left join user_role on
user_role.userId=userbase.id
right join role on
role.id=user_role.roleId
where jamacomment.scopeId=11
and role.name in ( 'sample grupa' )
and userbase.userName in ( 'sample' )
and my javascript code for that dataset on beforeOpen state is:
if( params["JDSuser"].value[0] != "(All Users)" ){
this.queryText=this.queryText.replaceAll('sample grupa', params["JDSgroup"]);
var users = params["JDSuser"];
//var userquery = "'";
var userquery = userquery + users.join("', '");
//userquery = userquery + "'";
this.queryText=this.queryText.replaceAll('sample', userquery);
}
I tryed many different quote variations, with this one I get no error messages, but if I choose 1 value, I get no data from database, but if I choose at least 2 values, I get the last chosen value data.
If I uncomment one of those additional quote script lines, then I get syntax error like this:
The following items have errors:
Table (id = 597):
+ An exception occurred during processing. Please see the following message for details: Failed to prepare the query execution for the
data set: Organization Cannot get the result set metadata.
org.eclipse.birt.report.data.oda.jdbc.JDBCException: SQL statement does not return a ResultSet object. SQL error #1:You have an error in
your SQL syntax; check the manual that corresponds to your MySQL
server version for the right syntax to use near 'rudolfs.sviklis',
'sample' )' at line 25 ;
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to
your MySQL server version for the right syntax to use near
'rudolfs.sviklis', 'sample' )' at line 25
Also, I should tell you that i'm doing this by looking from working example. Everything is the same, the previous code resulted to the same syntax error, I changed it to this script which does the same.
The example is available here:
http://developer.actuate.com/community/forum/index.php?/files/file/593-default-value-all-with-multi-select-parsmeter/
If someone could give me at least a clue to what I should do that would be great.
You should always use the value property of a parameter, i.e.:
var users = params["JDSuser"].value;
It is not necessary to surround "userquery" with quotes because these quotes are already put in the SQL query arround 'sample'. Furthermore there is a mistake because userquery is not yet defined at line:
var userquery = userquery + users.join("', '");
This might introduce a string such "null" in your query. Therefore remove all references to userquery variable, just use this expression at the end:
this.queryText=this.queryText.replaceAll('sample', users.join("','"));
Notice i removed the blank space in the join expression. Finally once it works finely, you probably need to make your report input more robust by testing if the value is null:
if( params["JDSuser"].value!=null && params["JDSuser"].value[0] != "(All Users)" ){
//Do stuff...
}