MySqlSyntaxErrorException wrong Query - java

I'm tring to create a table in mysql from java desktop program but I obtain a MySqlSyntaxErrorException.
The query is :
CREATE TABLE FileXFascia(fila0 Integer,fila1 Integer,fila2 Integer,fila3 Integer) VALUES ('3','4','3','3')
Anyone knows where I'm wrong?
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 'VALUES ('3','4','3','3')' at line 1

You need to split these as follows:
CREATE TABLE FileXFascia(fila0 Integer,fila1 Integer,fila2 Integer,fila3 Integer);
INSERT INTO FileXFascial (fila0, fila1, fila2, fila3) VALUES ('3','4','3','3');

In your question there are two different operations on a table, You are trying to create and insert data in single query even in a wrong way. First you need to create table then insert data into created table. Like below syntax.
create table tableName(col1 dataType,col2 dataType,col3 dataType,.......coln dataType);
After creation of table now you can insert data into table. Like below syntax.
insert into tableName(col1, col2,col3,......coln) values ('data1','data2','data3',......'datan');

Related

Adding one row of data to JTable from DB by id

I have a table i fill with data from my phpMyadmin database table, but I want to only have one row based on the id I write in a text field. I tried doing it as you can see in code, but I get a - 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 'from inputs where id ='11'' at line 1;
Any sugestions or solutions?
My code
looks like there is something wrong with your sql statement. This exception will be throws if the syntax of your statement is wrong.
Please provide us the sql-statement you try to execute.

Updating two sql tables using one query in java

I want to update two sql tables at once in java. I'm using SQLiteManager. Could someone please suggest a way of doing that?
Assuming you have the driver and connection to the database, you should be able to run most sql commands from java. There is not a single sql statement that will update two tables at once but you can update each table in turn which will have the same effect.
See http://www.javaworkspace.com/connectdatabase/connectSQLite.do for some examples.
For a table update, use
statement.execute(sql);
where sql is a string of the form
sql = "UPDATE myTable SET myColumn = newValue WHERE someOtherColumn=value";

Inserting from one database table to another

I have data in a mySQL database table. I am selecting this data and trying to insert it to a Netezza database table. I am using the spring framework and have a entity class called Student.
Some of the fields in the mySQL database table are in Integer format but the equivalent field in Netezza is in character format.
I am using a JDBC template and getting the data from mySQL and inserting that Student object to Netezza.
Here is my method:
String sqlStudent="INSERT INTO STUDENT(STUDENTID,CLASSID,COURSEID,TESTDATE,SCOREDATE) VALUES (?,?,?,?,?)";
netezzaJDBCTemplate.update(sqlStudent,new Object[] {student.getStudentId(),student.getClassId(),student.getCourseId(),student.getTestDate(),student.getScoreDate)});
I get an error when I do this. I even tried hard coding the INSERT.
Exception in thread "main" org.springframework.jdbc.BadSqlGrammarException: PreparedStatementCallback; bad SQL grammar [INSERT INTO STUDENT(STUDENTID,CLASSID,COURSEID,TESTDATE,SCOREDATE) VALUES (1521995,134,21,'2014-02-15 00:00:00','2014-02-15 00:00:00') )]; nested exception is org.netezza.error.NzSQLException: Parameter Index out of range: 1
Is this because of the difference in the column data types between the 2 databases? or am I missing something else?
Please help.
new studentMapper() might be the issue. JdbcTemplate's update method wont accept RowMapper correct?
If your are not using NamedParameterJdbcTemplate try to prefer that over regular JdbcTemplate which lets you bind the sql params with names.

Change Table names in derby database using entitymanager

I am using an APACHE DERBY database, and basing my database interactions on EntityManager, and I don't want to use JDBC class to build a query to change my tables' names (i just need to put a prefix to each new user to the application, but have the same structure of tables), such as:
//em stands for EntityManager object
Query tableNamesQuery= em.createNamedQuery("RENAME TABLE SCHEMA.EMP_ACT TO EMPLOYEE_ACT");
em.executeUpdate();
// ... rest of the function's work
// The command works from the database command prompt but i don't know how to use it in a program
//Or as i know you can't change system tables data, but here's the code
Query tableNamesQuery= em.createNamedQuery("UPDATE SYS.SYSTABLES SET TABLENAME='NEW_TABLE_NAME' WHERE TABLETYPE='T'");
em.executeUpdate();
// ... rest of the function's work
My questions are :
This syntax is correct?
Will it work?
Is there any other alternative?
Should I just use the SYS.SYSTABLES and find all the tables that has 'T' as tabletype and alter their name their, will it change the access name ?
I think you're looking for the RENAME TABLE statement: http://db.apache.org/derby/docs/10.10/ref/rrefsqljrenametablestatement.html
Don't just issue update statements against the system catalogs, you will corrupt your database.

How to invertly select columns in sql?

If I have a SQL table with columns:
NR_A, NR_B, NR_C, NR_D, R_A, R_B, R_C
and on runtime, I add columns following the column's sequence such that the next column above would be R_D followed by R_E.
My problem is I need to reset the values of columns that starts with R_ (labeled that way to indicate that it is resettable) back to 0 each time I re-run my script . NR_ columns btw are fixed, so it is simpler to just say something like:
UPDATE table set col = 0 where column name starts with 'NR_'
I know that is not a valid SQL but I think its the best way to state my problem.
Any thoughts?
EDIT: btw, I use postgres (if that would help) and java.
SQL doesn't support dynamically named columns or tables--your options are:
statically define column references
use dynamic SQL to generate & execute the query/queries
Java PreparedStatements do not insulate you from this--they have the same issue, just in Java.
Are you sure you have to add columns during normal operations? Dynamic datamodels are most of the time a realy bad idea. You will see locking and performance problems.
If you need a dynamic datamodel, take a look at key-value storage. PostgreSQL also has the extension hstore, check the contrib.
If you don't have many columns and you don't expect the schema to change, just list them explicitly.
UPDATE table SET NR_A=0;
UPDATE table SET NR_B=0;
UPDATE table SET NR_C=0;
UPDATE table SET NR_D=0;
Otherwise, a simple php script could dynamically build and execute your query:
<?php
$db = pg_connect("host=localhost port=5432 user=postgres password=mypass dbname=mydb");
if(!$db) die("Failed to connect");
$reset_cols = ["A","B","C","D"];
foreach ($col in $reset_cols) {
$sql = "UPDATE my_table SET NR_" . $col . "=0";
pg_query($db,$sql);
}
?>
You could also lookup table's columns in Postgresql by querying the information schema columns tables, but you'll likely need to write a plpgsql function to loop over the query results (one row per table column starting with "NR_").
if you rather using sql query script, you should try to get the all column based on given tablename.
maybe you could try this query to get all column based on given tablename to use in your query.
SELECT attname FROM
pg_attribute, pg_type
WHERE typname = 'tablename' --your table name
AND attrelid = typrelid
AND attname NOT IN ('cmin', 'cmax', 'ctid', 'oid', 'tableoid', 'xmin', 'xmax')
--note that this attname is sys column
the query would return all column with given tablename except system column

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