I have a very simple SQL query I need to run
SELECT `id`, `{Document id}` FROM `test`.`test` LIMIT 10;
where {Document id} is a column name. Whenever I run it through MariaDB JDBC, it fails with error unknown escape sequence. From my understanding {CALL ...} is used to call stored procedure with a JDBC CallableStatement.
How do I escape it? I want JDBC to treat it as literal string without special meaning. \ didn't work for me.
As mentioned in deleted answer by #a_horse_with_no_name, there is setEscapeProcessing. But it's not supported by a lot of connectors (example MariaDB).
I have confirmed this issue using mariadb-java-client-2.2.5. It is not an issue with mysql-connector-java-5.1.44 so you might want to report this issue to MariaDB.
Following the suggestion by #JoopEggen in the comments above, I got it to work with MariaDB JDBC by adding sessionVariables=sql_mode=ANSI_QUOTES to the connection string and using
ResultSet rs = st.executeQuery("SELECT \"{Document id}\" FROM test.test");
Related
I recently updated a project's jooq version from 3.13.5 to 3.14.15. I've rerun jooq-codegen. I'm using MySQL 5.7.
When running one of my tests - it performs a DAOImpl.exists. That call generates the following exception:
org.jooq.exception.DataAccessException: SQL [select `count`(*) from `users` where `users`.`id` = ?]; 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 '*) from `users` where `users`.`id` = 1094' at line 1
at org.jooq_3.14.15.MYSQL.debug(Unknown Source)
at org.jooq.impl.Tools.translate(Tools.java:2903)
at org.jooq.impl.DefaultExecuteContext.sqlException(DefaultExecuteContext.java:757)
at org.jooq.impl.AbstractQuery.execute(AbstractQuery.java:389)
at org.jooq.impl.AbstractResultQuery.fetchLazy(AbstractResultQuery.java:453)
at org.jooq.impl.AbstractResultQuery.fetchLazy(AbstractResultQuery.java:422)
at org.jooq.impl.AbstractResultQuery.fetchLazyNonAutoClosing(AbstractResultQuery.java:436)
at org.jooq.impl.AbstractResultQuery.fetchOne(AbstractResultQuery.java:613)
at org.jooq.impl.AbstractResultQuery.fetchOne(AbstractResultQuery.java:565)
at org.jooq.impl.SelectImpl.fetchOne(SelectImpl.java:3034)
at org.jooq.impl.DAOImpl.existsById(DAOImpl.java:300)
at org.jooq.impl.DAOImpl.exists(DAOImpl.java:288)
The problem is that count has backticks. It should be select count(*) from `users` where `users`.`id` = ?
Has anyone run into this before and know how to fix it? TIA
You probably specified RenderQuotedNames.ALWAYS and ran into this problem? https://github.com/jOOQ/jOOQ/issues/9931
The setting ALWAYS is misleading. It really means literally always, though people probably read it as ALWAYSISH_I_E_ONLY_WHEN_IT_MAKES_SENSE. Probably a naming design error, but what you want is EXPLICIT_DEFAULT_QUOTED, see the documentation:
https://www.jooq.org/doc/latest/manual/sql-building/dsl-context/custom-settings/settings-name-style/
RenderQuotedNames
ALWAYS: This will quote all identifiers.
EXPLICIT_DEFAULT_QUOTED: This will quote all identifiers, which are not explicitly unquoted using DSL.unquotedName().
EXPLICIT_DEFAULT_UNQUOTED: This will not quote any identifiers, unless they are explicitly quoted using DSL.quotedName().
NEVER: This will not quote any identifiers.
COUNT in DSL.count()is an explicitly unquoted name, and ALWAYS will override that.
Java DB2 Sql command throws an error if i have a ' in my String i tried to replace it with a escape sequence but it would not work on the DB2 end any help ? I want the ' to be present in the String.
Error
com.ibm.db2.jcc.am.SqlSyntaxErrorException: DB2 SQL Error: SQLCODE=-10, SQLSTATE=42603, SQLERRMC=', DRIVER=3.63.123
Java
String FUNC_VP = "Chris O'Connor/Henry/George";
String myQuery = "SELECT DISTINCT(VICE_PRES) FROM EMP_HC WHERE FUNC_VP ='"+funcvp_name.replace("'", "/'")+"'";
Use a PreparedStatement and its setParameter() methods. It will handle things like escaping for you, and you'll never have to wonder how a particular database might handle things. It also prevents SQL injection, so there's no good reason not to use it.
Try
String FUNC_VP = "Chris O''Connor/Henry/George";
To escape an apostrohe on DB2 it seems you have to use two apostrophes
When I run the sql statement below through psql it works fine, but when I try to run the same query by building it with a preparedstatement, it fails.
INSERT INTO Hvbp
(provider_number, weighted_clinical_process,
weighted_patience_experience, total_performance_score,
coordinates, latitude, longitude, address, city, state, zip)
VALUES
('010092', 43.909090909091, 13.5, 57.409090909091,
'POINT(33.206201 -87.525480)', 33.206200613000476,
-87.52548020899968, '809 UNIVERSITY BOULEVARD EAST', 'TUSCALOOSA', 'AL', '');
The error I keep getting is
org.postgresql.util.PSQLException: ERROR: column "coordinates" is of type geography but expression is of type character varying
Hint: You will need to rewrite or cast the expression.
Position: 203
The coordinates column is of type GEOGRAPHY(POINT)
I know this is an old problem, but I just spend most of the day debugging the same basic problem and finally found a fix
What you're trying to do, is provide the POINT using WKT and have the server automatically convert that into a Geometry.
And as you've found that works if you include the WKT inside the body of the SQL, but fails if you use a parameter on a prepared statement.
There are 3 options for fixing it:
Use st_GeographyFromText in your SQL like so:
INSERT INTO Hvbp(coordinates) VALUES( st_GeographyFromText(?) )
And then set your parameters as WKT with setString.
Depending on the frameworks involved, that might not be possible for you.
Use setObject on the preparedStatement instead of setString. For example:
ps.setObject(1, "POINT(33.206201 -87.525480)", java.sql.Types.OTHER )
Change your JDBC driver settings to send strings as unspecified type, and then the server will do type conversions for you. To do that you want to change your JDBC URL to something like
"jdbc:postgresql:my_db?stringtype=unspecified"
#Tim - thank you for your help with a similar problem - I had to write ST_GeometryFromText into my database and the JDBC Driver threw a similar exception as #Hanks got.
For further reference and clarification for others - this is my result using Java with JDBC:
INSERT INTO streets.points ( point_id, the_geom )
VALUES( ?, ST_GeomFromText( ? , 25832) );
And the inserted Geometry-String looked like that:
POINT(33.206201 -87.525480)
I'm trying to track the amount of redo being generated during a database session with the following query:
SELECT a.name, b.VALUE
FROM v$statname a, v$mystat b
WHERE a.statistic# = b.statistic# AND a.name = 'redo size';
This query works directly in SQL*Plus and Toad, but I get an ORA-00911 exception using JDBC, and I've narrowed it down to the "statistic#" column name.
How do I get around this?
The column name statistic# is not the problem.
My bet is that you also send the terminating ; from inside your Java program.
But you may not include the the ; when executing a SQL statement through JDBC (at least not in Oracle and some other DBMS).
Remove the ; from your SQL String and it should be fine.
put it in double quotes - that should let you call a field anything in Oracle
Switch on JDBC logging, check your driver documentation for how to do this. In the JDBC log you see the actual statement prepared and executed in the DB. This eliminates one possible cause for the error.
I am connecting to a DB2 database (DB2 v9.7.400.501) from my Java web application using the IBM DB2 Type 4 driver (db2jcc4.jar). When I try to execute an SQL statement like this,
SELECT * FROM USERS WHERE UPPER(USERNAME) = UPPER('testuser');
I get the following exception:
com.ibm.db2.jcc.am.SqlSyntaxErrorException: DB2 SQL Error:
SQLCODE=-104, SQLSTATE=42601, SQLERRMC=;;=
UPPER('testuser');END-OF-STATEMENT, DRIVER=4.12.55
The problem is from the UPPER function since, a normal select statement executes normally.
Maybe you should use is this way:
SELECT * FROM USERS WHERE UPPER(USERNAME) LIKE UPPER('testuser');
Your code with '=' is seems ok for SQLite but don't know anbout db2.
UPD. After some investigation, I can say that error is cause by Java code which tries to execute multiple statements in one query using ';' as a delimiter.
You should try using the PreparedStatement, addBatch() and executeBatch() for multiple statements.
UPD2. This is DB2 related issue. PostgreSQL, afaik, allows multiple statements in single query.