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fix for datetime subtraction on DB2 

Signed-off-by: Gavin King <gavin@hibernate.org>
This commit is contained in:
Gavin King 2024-05-02 19:58:23 +02:00
parent 064526a5c6
commit ac40e37700
1 changed files with 13 additions and 5 deletions
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18
hibernate-core/src/main/java/org/hibernate/dialect/DB2Dialect.java
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@ -476,7 +476,11 @@ public class DB2Dialect extends Dialect {
switch ( unit ) {
case NATIVE:
case NANOSECOND:
pattern.append( "(seconds_between(" );
pattern.append( "(seconds_between(date_trunc('second'," );
pattern.append( toExpression );
pattern.append( "),date_trunc('second'," );
pattern.append( fromExpression );
pattern.append( "))" );
break;
//note: DB2 does have weeks_between()
case MONTH:
@ -484,14 +488,18 @@ public class DB2Dialect extends Dialect {
// the months_between() function results
// in a non-integral value, so trunc() it
pattern.append( "trunc(months_between(" );
pattern.append( toExpression );
pattern.append( ',' );
pattern.append( fromExpression );
pattern.append( ')' );
break;
default:
pattern.append( "?1s_between(" );
pattern.append( toExpression );
pattern.append( ',' );
pattern.append( fromExpression );
pattern.append( ')' );
}
pattern.append( toExpression );
pattern.append( ',' );
pattern.append( fromExpression );
pattern.append( ')' );
switch ( unit ) {
case NATIVE:
pattern.append( "+(microsecond(");