TAG | oracle

May 2009 04

Biaxin Xl 500

Biaxin xl 500, When working with Oracle database, ORA-01795 (maximum number of expressions in a list) is a typical error when working with a large number of expressions in list parameters (IN(expr_list)).

The workaround

A simple workaround is to partition this parameter list in smaller lists with a maximum of 1000 elements (the oracle limit), biaxin for strep throat. Buy biaxin online, Example, using HQL syntax (the Hibernate Query Language):

-- Instead of having:
s.userId in (:users)
-- We will have:
(
s.userId in (:users0) OR
s.userId in (:users1) OR
.., biaxin xl pak directions. Order biaxin, OR
s.userId in (:usersN)
)


The workaround: Java implementation

If you're programming in Java, you can build the HQL query and pass its parameters as described below:

// The HQL query string
StringBuilder hql = new StringBuilder("select * from Table s where ");

// The original user IDs list
List userIds = new ArrayList();

// Build the HQL query
if(userIds.size() <= 1000) {
// Less or equal to the limit - leave as is
hql.append("s.userId in (:users)");
System.out.println("s.userId in (:users)");
}else{
// Higher than the limit - partition list.., biaxin xl 500. Biaxin for ear infection, int nUsers = userIds.size();
int blockId = 0;
StringBuilder buff = new StringBuilder();
buff.append("(");
int blocks = (int) (nUsers / 1000);
blocks = (blocks*1000 == nUsers) . blocks : blocks+1;
for(int i=0; i buff.append("s.userId in (:users"+blockId+")");
buff.append(" OR ");
blockId++;
}
buff.append("s.userId in (:users"+blockId+")");
buff.append(")");
hql.append(buff.toString());
}
System.out.println(hql.toString());

// Fill in list parameters
Query q = session.createQuery(hql.toString());
if(userIds.size() <= 1000) {
q.setParameterList("users", biaxin xl 500mg clarithromycin, Biaxin xl 500mg, userIds);
}else{
int nUsers = userIds.size();
int blockId = 0, startIndex = 0;
int blocks = (int) (nUsers / 1000);
blocks = (blocks*1000 == nUsers), prescription for ear infection. Biaxin for strep, blocks : blocks+1;
for(int i=0; i q.setParameterList("users"+blockId,
userIds.subList(startIndex, biaxin for sale, Biaxin for ear infections, startIndex+1000));
System.out.println("users"+blockId+": "+
userIds.subList(startIndex, startIndex+1000));
blockId++;
startIndex += 1000;
}
q.setParameterList("users"+blockId, biaxin xl 500 mg, Prescriptions for bladder infections, userIds.subList(startIndex, nUsers));
System.out.println("users"+blockId+": "+
userIds.subList(startIndex, biaxin for strep throat, nUsers));
}

// Execute query...
// ...
.

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