• Marc Alff's avatar
    Bug#26030 (Parsing fails for stored routine w/multi-statement execution · c7724872
    Marc Alff authored
    enabled)
    
    Before this fix, the lexer and parser would treat the ';' character as a
    different token (either ';' or END_OF_INPUT), based on convoluted logic,
    which failed in simple cases where a stored procedure is implemented as a
    single statement, and used in a multi query.
    
    With this fix:
    - the character ';' is always parsed as a ';' token in the lexer,
    - parsing multi queries is implemented in the parser, in the 'query:' rules,
    - the value of thd->client_capabilities, which is the capabilities
      negotiated between the client and the server during bootstrap,
      is immutable and not arbitrarily modified during parsing (which was the
      root cause of the bug)
    
    c7724872
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