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Add limit and offset to query that was created from a String

I have query as String like
select name from employee
and want to limit the number of rows with limit and offset.
Is this possible with jOOQ and how do I do that?
Something like:
dsl.fetch("select name from employee").limit(10).offset(10);

Yes you're close, but you cannot use fetch(sql), because that eagerly executes the query and it will be too late to append LIMIT and OFFSET. I generally don't recommend the approach offered by Sergei Petunin, because that way, you will tell the RDBMS less information about what you're going to do. The execution plan and resource allocations are likely going to be better if you actually use LIMIT and OFFSET.
There are two ways to do what you want to achieve:
Use the parser
You can use DSLContext.parser() to parse your SQL query and then modify the resulting SelectQuery, or create a derived table from that. Creating a derived table is probably a bit cleaner:
dsl.selectFrom(dsl.parser().parse("select name from employee"))
.limit(10)
.offset(10)
.fetch();
The drawback is that the parser will have to understand your SQL string. Some vendor specific features will no longer be available.
The advantage (starting from jOOQ 3.13) is that you will be able to provide your generated code with attached converters and data type bindings this way, as jOOQ will "know" what the columns are.
Use plain SQL
You were already using plain SQL, but the wrong way. Instead of fetching the data eagerly, just wrap your query in DSL.table() and then use the same approach as above.
When using plain SQL, you will have to make sure manually, that the resulting SQL is syntactically correct. This includes wrapping your query in parentheses, and possibly aliasing it, depending on the dialect you're using:
dsl.selectFrom(table("(select name from employee)").as("t"))
.limit(10)
.offset(10)
.fetch();

The best thing you can do with a string query is to create a ResultQuery from it. It allows you to limit the maximum amount of rows fetched by the underlying java.sql.Statement:
create.resultQuery("select name from employee").maxRows(10).fetch();
or to fetch lazily and then scroll through the cursor:
create.resultQuery("select name from employee").fetchLazy().fetch(10);
Adding an offset or a limit to a query is only possible using a SelectQuery, but I don't think there's any way to transform a string query to a SelectQuery in JOOQ.
Actually, if you store SQL queries as strings in the database, then you are already in a non-typesafe area, and might as well append OFFSET x LIMIT y directly to a string-based query. Depending on the complexity of your queries, it might work.

IN Equivalent Query In Solr and Solrj

I am using solr5.0.0. I would like to know the equivalent query for
IN in solr or solrj.
If I need to query products of different brands, I can use IN clause. If I have brands like dell, sony, samsung. I need to find the product with these brands using Solr and in Java Solrj.
Now I am using this code in Solrj
qry.addFilterQuery("brand:dell OR brand:sony OR brand:samsung");
I know that I can use OR here, but need to know about IN in Solr. And the performance of OR.

As you can read in Solr's wiki about its' query syntax, Solr uses per default a superset of Lucene's Query parser. As you can see when reading both documents, something like IN does not exist. But you can get shorter than the example query you presented.
In case that your default operator is OR you can leave it out from the query. In addition you can make use of Field Grouping.
qry.addFilterQuery("brand:(dell sony samsung)");
In case OR is not your default operator or you are not sure about this, you can employ Local Parameters for the filter query so that OR is enforced. Afterwards you can again make use of Field Grouping.
qry.addFilterQuery("{!q.op=OR}brand:(dell sony samsung)");
Keep in mind that you need to surround a phrase with " to keep the words together
qry.addFilterQuery("{!q.op=OR}brand:(dell sony samsung \"packard bell\")");

Is it possible to running sql file with parameter and getting result set?

Hi dear stackoverflow users,
Firstly,i want to specify that my platforms are JAVA, ORACLE and TOAD.
I have some SELECT queries that include parameters and i have stored them in properties file to make them more readable. I can use them with '?' and setTYPE in JAVA.
But i have to use (:) operator to define parameters in TOAD. So, when i want to run my query in TOAD, i copy the query from JAVA properties file and paste it to TOAD editor and add parameters manuelly. This is not professional i think. I want to store my queries with : operator and in JAVA platform. Is this possible ? Are there any framework or something like it ?
NOTE :
1-) i want to store my queries with my JAVA code, not in stored procedure.
2-) i want to store my queries that can run that two platform without change anything.
Thank you.

You can use the OraclePreparedStatement:
String query = myProperties.getProperty("some_key");
//Suppose query is 'SELECT * FROM MY_TBL WHERE ID=:myId'
OraclePreparedStatement statement = (OraclePreparedStatement) myConnection.prepareStatement(query);
statement.setStringAtName("myId", "abc2");
someResultSet = statement.executeQuery();

Inserting data in cassandra without puting in single quotes using cql java driver

I am having trouble puting those single quotes for ASCII/Timestamp columns and not puting for other types like Int, Decimal, Boolean etc.
The data comes from another db/table, which is a sql.
I have all the column data as string. I don't want to format each column data to check null values and then decide to put quote or not.
Is it possible to pass in insert data value without giving single quotes, using prepared statement or whatever.

If you don't want to write a loader that uses prepared statements (via the CQL driver...which is a good idea), I can think of one other way. To import without using single quotes, you should be able to accomplish this with the COPY FROM CQL3 command (setting the QUOTE parameter to an empty string). If you can dump your RDBMS data to a csv file, you should be able to insert those values into Cassandra like this:
COPY myColumnFamily (colname1,colname2,colname3)
FROM '/home/myUser/rdbmsdata.csv' WITH QUOTE='';
Check out the documentation on the COPY command for more information. Examples can be found here.
EDIT:
I also read the above question and assumed that you did not want a prepared statement-based answer. Since that's obviously not the case, I thought I'd also provide one here (using DataStax's Java CQL driver). Note that this answer is based on my column family and column names from my example above, and assumes that col1 is the (only) primary key.
PreparedStatement statement = session.prepare(
"UPDATE myKeyspace.myColumnFamily " +
"SET col2=?, col3=? " +
"WHERE col1=?");
BoundStatement boundStatement = statement.bind(
strCol2, strCol3, strCol1);
session.execute(boundStatement);
This solution does not require you to encapsulate your string data in single quotes, and has a few added benefits over your String.ReplaceAll:
Allows you to insert values containing single quotes.
Escapes your values, protecting you from CQL-Injection (the lesser-known relative of SQL-Injection).
In CQL, both UPDATE and INSERT add a record if it does not exist and update it if it does (effectively known as an "UPSERT"). Using an UPDATE over an INSERT supports counter columns (if your schema ends up using them).
Prepared statements are faster, because they allow Cassandra to only have to parse the query once, and then re-run that same query with different values.
For more information, check out DataStax's documentation on using prepared statements with the Java Driver.

Finally did it using String.format clubbed with replace
String.format("INSERT INTO xyz_zx(A,B,C,D) VALUES('%s','%s',%s,%s);",(Object[])Strings).replaceAll("'null'","null");

Parsing and modification of SQL statements in Java

Does anyone know about a SQL statements parser, in Java, that would allow having an Object representation of a SQL query, allow modifying this representation and generate back the updated SQL statement?
Regards,
Christophe

I would think that ANTLR would be able to do this.

Maybe you could look at JSqlParser.

This is a demo use Java SQL Parser do something like this:
Input SQL:
SELECT A as A_Alias, B AS B_Alias FROM TABLE_X
If you need to remove the second column “B AS B_Alias” from the select list, just do something like this:
columns.removeResultColumn(1); // 0 is the first column
then you will get this new SQL(the , was removed automatically):
SELECT A as A_Alias FROM TABLE_X
this demo also illustrates how to replace a column, Add criteria (where clause), Add Order by clause and etc.