I'm using Spring JbdcTemplate with Postgres.
Stuck with a problem cause of the Postrgres JDBC internal prepared statement implemetation
My query string is:
private static final String SELECT_ALL_PARTIALLY =
"SELECT login, added FROM admin ORDER BY ? ? OFFSET ? LIMIT ?";
And I want to use it like:
List matches = getJdbcTemplate().query(SELECT_ALL_PARTIALLY,
(new Object[]{
column, // "login" or "added"
order, // "asc" or "desc"
offset,
limit
}),
new RowMapper() {
...
The problem is with a ...ORDER BY ? ? OFFSET...
...ORDER BY ? ? OFFSET...
org.postgresql.util.PSQLException: ERROR: syntax error at or near "$2"
Position: 61
at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2102)
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1835)
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:257)
at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:500)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:388)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:273)
at org.springframework.jdbc.core.JdbcTemplate$1.doInPreparedStatement(JdbcTemplate.java:648) ...
How can I separate this two placeholders or something?
Postgres doesn't allow you to specify ordering direction as a parameter. You need to create different query strings for asc
and desc
order and choose one of them to execute.
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