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The following page has been changed by SanthoshSrinivasan: http://wiki.apache.org/pig/PigTypesFunctionalSpec ------------------------------------------------------------------------------ ==== Numeric Equals and Notequals (==, !=) ==== || || '''bag''' || '''tuple''' || '''map''' || '''int''' || '''long''' || '''float''' || '''double''' || '''chararray''' || '''bytearray''' || || '''bag''' || error || error || error || error || error || error || error || error || error || - || '''tuple''' || || Tuple A is equal to tuple B iff they have the same size s, and for all 0 <= i < s A[i] = = B[i] || error || error || error || error || error || error || error || + || '''tuple''' || || boolean (Tuple A is equal to tuple B iff they have the same size s, and for all 0 <= i < s A[i] = = B[i]) || error || error || error || error || error || error || error || - || '''map''' || || || Map A is equal to map B iff A and B have the same number of entries, and for every key k1 in A with a value of v1, there is a key k2 in B with a value of v2, such that k1 = = k2 and v1 = = v2 || error || error || error || error || error || error || + || '''map''' || || || boolean (Map A is equal to map B iff A and B have the same number of entries, and for every key k1 in A with a value of v1, there is a key k2 in B with a value of v2, such that k1 = = k2 and v1 = = v2) || error || error || error || error || error || error || - || '''int''' || || || || yes || yes || yes || yes || error || as int || + || '''int''' || || || || boolean || boolean || boolean || boolean || error || boolean (bytearray cast as int) || - || '''long''' || || || || || yes || yes || yes || error || as long || + || '''long''' || || || || || boolean || boolean || boolean || error || boolean (bytearray cast as long) || - || '''float''' || || || || || || yes || yes || error || as float || + || '''float''' || || || || || || boolean || boolean || error || boolean (bytearray cast as float) || - || '''double''' || || || || || || || yes || error || as double || + || '''double''' || || || || || || || boolean || error || boolean (bytearray cast as double) || - || '''chararray''' || || || || || || || || yes || as chararray || + || '''chararray''' || || || || || || || || boolean || boolean (bytearray cast as chararray) || - || '''bytearray''' || || || || || || || || || yes || + || '''bytearray''' || || || || || || || || || boolean || [[Anchor(String_equality_and_Inequality_Comparators.)]] ==== String Equality and Inequality Comparators. ==== @@ -276, +276 @@ || '''bag''' || error || error || error || error || error || error || error || error || error || || '''tuple''' || || error || error || error || error || error || error || error || error || || '''map''' || || || error || error || error || error || error || error || error || - || '''int''' || || || || yes || yes || yes || yes || error || as int || + || '''int''' || || || || boolean || boolean || boolean || boolean || error || boolean (bytearray cast as int) || - || '''long''' || || || || || yes || yes || yes || error || as long || + || '''long''' || || || || || boolean || boolean || boolean || error || boolean (bytearray cast as long) || - || '''float''' || || || || || || yes || yes || error || as float || + || '''float''' || || || || || || boolean || boolean || error || boolean (bytearray cast as float) || - || '''double''' || || || || || || || yes || error || as double || + || '''double''' || || || || || || || boolean || error || boolean (bytearray cast as double) || - || '''chararray''' || || || || || || || || yes || as chararray || + || '''chararray''' || || || || || || || || boolean || boolean (bytearray cast as chararray) || - || '''bytearray''' || || || || || || || || || yes || + || '''bytearray''' || || || || || || || || || boolean || [[Anchor(MATCHES)]] ==== MATCHES ==== || || '''chararray''' || '''bytearray''' || - || '''chararray''' || yes || as chararray || + || '''chararray''' || boolean || boolean (bytearray cast as chararray) || - || '''bytearray''' || || yes || + || '''bytearray''' || || boolean || [[Anchor(IS_NULL_)]] ==== IS NULL ==== @@ -307, +307 @@ || '''bag''' || error || error || error || not yet || not yet || not yet || not yet || error || error || || '''tuple''' || || error || error || not yet || not yet || not yet || not yet || error || error || || '''map''' || || || error || error || error || error || error || error || error || - || '''int''' || || || || yes || yes || yes || yes || error || as int || + || '''int''' || || || || int || long || float || double || error || int (bytearray cast as int) || - || '''long''' || || || || || yes || yes || yes || error || as long || + || '''long''' || || || || || long || float || double || error || long (bytearray cast as long) || - || '''float''' || || || || || || yes || yes || error || as float || + || '''float''' || || || || || || float || double || error || float (bytearray cast as float) || - || '''double''' || || || || || || || yes || error || as double || + || '''double''' || || || || || || || double || error || double (bytearray cast as double) || || '''chararray''' || || || || || || || || error || error || - || '''bytearray''' || || || || || || || || || as double || + || '''bytearray''' || || || || || || || || || double (bytearray cast as double) || [[Anchor(Modulo)]] ==== Modulo ==== This is a new operator, `%`, it is valid only for integer types. || || '''int''' || '''long''' || '''bytearray''' || - || '''int''' || yes || yes || as int || + || '''int''' || int || long || int (bytearray cast as int) || - || '''long''' || || yes || as long || + || '''long''' || || long || long (bytearray cast as long) || || '''bytearray''' || || || error || We may choose not to implement the mod operator right away, as there are no @@ -335, +335 @@ || '''bag''' || error || error || error || error || error || error || error || error || error || || '''tuple''' || || not yet || error || error || error || error || error || error || error || || '''map''' || || || error || error || error || error || error || error || error || - || '''int''' || || || || yes || yes || yes || yes || error || as int || + || '''int''' || || || || int || long || float || double || error || int (bytearray cast as int) || - || '''long''' || || || || || yes || yes || yes || error || as long || + || '''long''' || || || || || long || float || double || error || long (bytearray cast as long) || - || '''float''' || || || || || || yes || yes || error || as float || + || '''float''' || || || || || || float || double || error || float (bytearray cast as float) || - || '''double''' || || || || || || || yes || error || as double || + || '''double''' || || || || || || || double || error || double (bytearray cast as double) || || '''chararray''' || || || || || || || || error || error || - || '''bytearray''' || || || || || || || || || as double || + || '''bytearray''' || || || || || || || || || double (bytearray cast as double) || [[Anchor(Concat)]] === Concat === @@ -348, +348 @@ A new operator concat will be added for chararrays. || || '''chararray''' || '''bytearray''' || - || '''chararray''' || yes || as chararray || + || '''chararray''' || chararray || chararray (bytearray cast as chararray) || - || '''bytearray''' || || yes || + || '''bytearray''' || || bytearray || [[Anchor(Unary_Operators)]] === Unary Operators === @@ -360, +360 @@ || '''bag''' || error || || '''tuple''' || error || || '''map''' || error || - || '''int''' || yes || + || '''int''' || int || - || '''long''' || yes || + || '''long''' || long || - || '''float''' || yes || + || '''float''' || float || - || '''double''' || yes || + || '''double''' || double || || '''chararray''' || error || - || '''bytearray''' || as double || + || '''bytearray''' || double (as double) || [[Anchor(Size_)]] ==== Size ====
