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49
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1 syntax ::= select expr_list from var_defs where condition
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2
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3 name ::= <\w>+
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4
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5 fqdn ::= name[.name...]
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6
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7 string ::= '[{<^'>+|<'>{2}}...]'
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8
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9 number ::= [{+|-}] <\d>+
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10
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11 math_op ::= {+|-|*|/}
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12
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13 compare_op ::= {<\>>|<\<>|==|!=}
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14
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15 log_op ::= {OR|AND}
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16
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17 not_op ::= NOT
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18
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19 expr ::= {string|number|fqdn} [math_op {string|number|fqdn|( expr )} ...]
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20
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21 expr_list ::= expr [, expr ...]
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22
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23 type ::= name [<\<>type [, type ...]<\>>]
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24
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25 condition ::= [not_op] expr compare_op expr [log_op {condition|( condition )} ...]
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26
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27 var_defs ::= name as type [, name as type ...]
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