@zhyass and I found some codes may be incorrect in

https://github.com/ClickHouse/ClickHouse/blob/33ffe11d0397aa6904c246172223b1da1fbcf1cc/src/Storages/MergeTree/KeyCondition.cpp#L280-L297

It tries to extract fixed prefix from the like pattern to find the range, but it's wrong, A counterexample is ：

like_pattern  -> "a%c",  the prefix will be "a" and the range will be ` Range("a", true,"b", false)` yet the String "axxxxxd" still not match match this pattern (  axxxxxd not like a%c => true  ).

`Not like` is not the reverse of `Like` in continuous key ranges.

The only special case to work fine for "not like" to range is that string pattern ends with "%" or "_" , eg:    'a%', 'a\_'

cc @alexey-milovidov 
{
    if (!key_columns.count(column))
        return false;
    rpn.emplace_back(RPNElement::FUNCTION_IN_RANGE, key_columns[column], range);
    rpn.emplace_back(RPNElement::FUNCTION_AND);
    return true;
}
/** Computes value of constant expression and its data type.
  * Returns false, if expression isn't constant.
  */
bool KeyCondition::getConstant(const ASTPtr & expr, Block & block_with_constants, Field & out_value, DataTypePtr & out_type)
{
    
    String column_name = expr->getColumnName();
    if (const auto * lit = expr->as<ASTLiteral>())
    {
        
        
        
        if (!block_with_constants.has(column_name))
            column_name = "_dummy";
        
        out_value = lit->value;
        out_type = block_with_constants.getByName(column_name).type;