cayenne-dbsync/src/main/java/org/apache/cayenne/dbsync/merge/factory/SQLServerMergerTokenFactory.java [74:91]:
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    public MergerToken createSetAllowNullToDb(DbEntity entity, final DbAttribute column) {
        return new SetAllowNullToDb(entity, column) {

            @Override
            public List<String> createSql(DbAdapter adapter) {
                StringBuffer sqlBuffer = new StringBuffer();

                sqlBuffer.append("ALTER TABLE ");
                sqlBuffer.append(adapter.getQuotingStrategy().quotedFullyQualifiedName(getEntity()));
                sqlBuffer.append(" ALTER COLUMN ");

                adapter.createTableAppendColumn(sqlBuffer, column);

                return Collections.singletonList(sqlBuffer.toString());
            }

        };
    }
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cayenne-dbsync/src/main/java/org/apache/cayenne/dbsync/merge/factory/OracleMergerTokenFactory.java [72:89]:
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    public MergerToken createSetAllowNullToDb(DbEntity entity, final DbAttribute column) {
        return new SetAllowNullToDb(entity, column) {

            @Override
            public List<String> createSql(DbAdapter adapter) {
                StringBuffer sqlBuffer = new StringBuffer();

                sqlBuffer.append("ALTER TABLE ");
                sqlBuffer.append(adapter.getQuotingStrategy().quotedFullyQualifiedName(getEntity()));
                sqlBuffer.append(" MODIFY ");

                adapter.createTableAppendColumn(sqlBuffer, column);

                return Collections.singletonList(sqlBuffer.toString());
            }

        };
    }
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