* @return 语句模板
*/
private String[] _createSqlElements() {
String[] ss = literal.stack.cloneChain();
VarIndex vIndex = literal.getVarIndexes();
VarSet vs = vars;
for (String name : vIndex.names()) {
int[] is = vIndex.indexesOf(name);
Object obj = vs.get(name);
for (int i : is)
ss[i] = null == obj ? "" : obj.toString();
}
return ss;
}