CODEWITHSUNDEEP
sqlpostgresqljdbcprepared-statement
Ritesh
Ritesh

Reputation: 265

How to use IN clause with PreparedStatement in PostgreSQL

I have to write a SQL query for Postgres database as follows:

DELETE FROM employee WHERE ename IN (?)

I want to pass ename as list or string which will contain multiple employee names, e.g. "abc, bcd, efg". How to set the values?

How to use IN clause with PreparedStatement in Postgres?

Upvotes: 26

Views: 22379

Answers (3)

Eric Tan
Eric Tan

Reputation: 1

You might want to try the below:

DELETE FROM employee 
 WHERE ename IN ('abc', 'bcd', 'efg')

Upvotes: -11

user330315
user330315

Reputation:

There are several ways to do this. The clean way is to pass an array to the prepared statement. An alternative to Nick's answer is to pass a proper java.sql.Array value:

PreparedStatement pstmt = connection.prepareStatement(
    "DELETE FROM employee WHERE ename = ANY (?)");
String[] idList = new String[] {"abc", "bcd", "efg"};
Array ids = connection.createArray("varchar", idList);
pstmt.setArray(1, ids);

Another option is to use Postgres' string functions to convert the comma separated list to an array. That is probably the easiest way:

PreparedStatement pstmt = connection.prepareStatement(
     "DELETE FROM employee WHERE ename = ANY (string_to_array(?, ','))");
psmt.setString(1, "abc,bcd,efg");

Note that you must not have spaces between the comma and the value! Those spaces will be part of the value that is stored in the array after string_to_array() has done it's job so comparison would e.g. be ename = ' bcd' which would fail if there is no leading space in the column ename(which is highly likely)

Upvotes: 30

Nick Barnes
Nick Barnes

Reputation: 21326

Like this:

DELETE FROM employee WHERE ename = ANY(?)

The parameter should be formatted as an array literal, e.g. "{abc,bcd,efg}".

Upvotes: 14

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