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- command ::= define_data
- | modify_data
- | system_command
- define_data ::= create_command
- modify_data ::= select_command
- | insert_command
- | update_command
- | delete_command
- system_command ::=
- | describe_command
- | open_command
- | close_command
- | save_command
- | list_command
- | clear_command
- | dump_command
- | help_command
- create_command ::=
- ( "CREATE" | "create" ) (character_set)+
- "("((character_set)+,)+")"
- ("WITH"|"with") ("VALUES"|"values")
- "("((character_set)+,)+")"
- select_command ::=
- ("SELECT"|"select")
- ("*"|(character_set)+)
- ("FROM"|"from")
- (character_set)+
- [("WHERE"|"where") condition]
- [("LIMIT"|"limit") (numeric)+]
- insert_command ::=
- ( "INSERT" | "insert" )
- ("INTO"|"into")
- (character_set)+
- "("((character_set)+,)+")"
- ("VALUES"|"values")
- "("((character_set)+,)+")"
- update_command ::=
- ("UPDATE"|update")
- (character_set)+
- ("SET"|"set")
- (character_set)+
- "="
- (character_set)+
- [("WHERE"|"where") condition]
- delete_command ::=
- ("DELETE"|"delete")
- ("FROM"|"from")
- (character_set)+
- [("WHERE"|"where") condition]
- open_command ::=
- ("OPEN"|"open")
- (character_set)+
- close_command ::=
- ("CLOSE"|"close")
- (character_set)+
- save_command ::=
- ("SAVE"|"save")
- | ("SAVE"|"save")
- ("AS"|"as")
- (character_set)+
- list ::=
- ("LS"|"ls"|"DIR"|"dir")
- | ("LS"|"ls"|"DIR"|"dir")
- (character_set)+
- clear ::=
- ("CLEAR"|"clear"|"CLS"|"cls")
- dump ::=
- ("DUMP"|"dump")
- help ::=
- ("help"|"HELP"|"/HELP"|"/help"|"/?")
- condition ::=
- (character_set)+
- (["<"|">"|"!"]=|["<"|">"|"="])
- (character_set)+
- [(("AND"|"and")|("OR"|"or"))
- (character_set)+
- (["<"|">"|"!"]=|["<"|">"|"="])
- (character_set)+]
- character_set ::=
- "a"|"b"|"c"|"d"|"e"|"f"|"g"|"h"|"i"|"j"|"k"|"l"|"m"
- "n"|"o"|"p"|"q"|"r"|"s"|"t"|"u"|"v"|"w"|"x"|"y"|"z"
- |"A"|"B"|"C"|"D"|"E"|"F"|"G"|"H"|"I"|"J"|"K"|"L"|"M"
- |"N"|"O"|"P"|"Q"|"R"|"S"|"T"|"U"|"V"|"W"|"X"|"Y"|"Z"
- |"0"|"1"|"2"|"3"|"4"|"5"|"6"|"7"|"8"|"9"
- |"-"|"_"|"("|")"|"."|","|"""|"/"|"\"|"@"|"#"|"~"|"|"
- |"*"|"&"|"%"|"$"|"£"|"!"|"+"|"?"|">"|"<"|"="
- numeric ::=
- "0"|"1"|"2"|"3"|"4"|"5"|"6"|"7"|"8"|"9"
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