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Im having problems with geting data from MySQL to my java project

I am trying to make a project in java but I'm having problems with MySQL, after trying to get the material inside the table I get this error message:
java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'table' at line 1
String sql = "SELECT Name, OS, Disk, Office, Serialnomain, Serialnotast, Serialnoscreen, Serialnomouse FROM table ";
ResultSet rs = stmt.executeQuery(sql);

Change your name from table to anything else and will work fine.

table is a reserved word in mariadb
so rename your table and it will run

The SQL Language has some keywords which you should not use in your statement, table is one of them just rename your table to myTable

SQL Query fails in Java but works outside

I have a simple SQL query. It works fine if I use it in SequelPro but when I try to use the query in a Java statement if fails.
The query is operating on a simple table that only has two fields, idpolari and word. I originally structured the query as SELECT * FROM polari when this did not work I tried naming the specific fields. Have tried executing the query in SequelPro and against the database and it works fine. It also works from the command line. Just not working in Java.
I am working in Netbeans running MySQL on an IMac.
sql = "SELECT idpolari, word FROM polari";
Statement stmt = con.createStatement();
ResultSet res1 = stmt.executeQuery(sql);
I would have expected the full contents fo the polari table, what I get is this error message:
INFO: 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 '' at line 1 SELECT idpolari, word FROM polari

SELECT * FROM table throws error in JDBC

I am trying to make a select from a table, which works fine with every other table in my database, but when I try the following I recieve an error:
db.makeQuery("SELECT * FROM References");
Which calls:
public ResultSet makeQuery(String query) throws Exception
{
preparedStatement = connect.prepareStatement(query);
resultSet = preparedStatement.executeQuery(query);
return resultSet;
}
It then throws the following error:
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 'References' at line 1
I seems very strange to me, since this statement works:
db.makeQuery("select * from Products");

References is a keyword in SQL, so you better avoid it for table names. (See for instance this documentation.)
As suggested by Nishant, you can use reserved words in queries if you escape them with backticks.
Related question:
Using MySQL keywords in a query?

use
db.makeQuery("SELECT * FROM `References`");
if you can, better, avoid having names that are MySQL keywords. As suggested by aioobe

You might be misspelling the name of your table. MySQL gives this error when it can't find that table you're referring to.
Use SHOW TABLES; to see the names of the tables in your database, and double-check the name.

SQL - UPPER function in DB2 not working

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.

SQL query works in phpmyadmin but not when using jdbc and java

This query works when I input it through phpmyadmin.
INSERT INTO conversation (user_id) VALUES (?);
INSERT INTO conversation (conversation_id, user_id)
VALUES ((SELECT LAST_INSERT_ID()), ?)
However when I send that query using jdbc and java I get an error -
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 'INSERT INTO conversation (conversation_id, user_id) VALUES ((SELECT LAST_INSERT_' at line 1"
I am using the exact same query. I checked by calling toString on the PreparedStatement and copying and pasting it into phpmyadmin and executing it and it worked fine. It just doesn't work through java. Any ideas whats wrong?

By default, you cannot execute multiple statements in one query through JDBC. Splitting it into two calls will work, as will changing the allowMultiQueries configuration property to True.
JDBC Configuration Properties — allowMultiQueries:
Allow the use of ';' to delimit multiple queries during one statement (true/false), defaults to 'false', and does not affect the addBatch() and executeBatch() methods, which instead rely on rewriteBatchStatements.
Default value: false