PREHOOK: query: DESCRIBE FUNCTION ascii PREHOOK: type: DESCFUNCTION POSTHOOK: query: DESCRIBE FUNCTION ascii POSTHOOK: type: DESCFUNCTION ascii(str) - returns the numeric value of the first character of str PREHOOK: query: DESCRIBE FUNCTION EXTENDED ascii PREHOOK: type: DESCFUNCTION POSTHOOK: query: DESCRIBE FUNCTION EXTENDED ascii POSTHOOK: type: DESCFUNCTION ascii(str) - returns the numeric value of the first character of str Returns 0 if str is empty or NULL if str is NULL Example: > SELECT ascii('222') FROM src LIMIT 1; 50 > SELECT ascii(2) FROM src LIMIT 1; 50 PREHOOK: query: EXPLAIN SELECT ascii('Facebook'), ascii(''), ascii('!') FROM src LIMIT 1 PREHOOK: type: QUERY POSTHOOK: query: EXPLAIN SELECT ascii('Facebook'), ascii(''), ascii('!') FROM src LIMIT 1 POSTHOOK: type: QUERY ABSTRACT SYNTAX TREE: (TOK_QUERY (TOK_FROM (TOK_TABREF (TOK_TABNAME src))) (TOK_INSERT (TOK_DESTINATION (TOK_DIR TOK_TMP_FILE)) (TOK_SELECT (TOK_SELEXPR (TOK_FUNCTION ascii 'Facebook')) (TOK_SELEXPR (TOK_FUNCTION ascii '')) (TOK_SELEXPR (TOK_FUNCTION ascii '!'))) (TOK_LIMIT 1))) STAGE DEPENDENCIES: Stage-1 is a root stage Stage-0 is a root stage STAGE PLANS: Stage: Stage-1 Map Reduce Alias -> Map Operator Tree: src TableScan alias: src Select Operator expressions: expr: ascii('Facebook') type: int expr: ascii('') type: int expr: ascii('!') type: int outputColumnNames: _col0, _col1, _col2 Limit File Output Operator compressed: false GlobalTableId: 0 table: input format: org.apache.hadoop.mapred.TextInputFormat output format: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat Stage: Stage-0 Fetch Operator limit: 1 PREHOOK: query: SELECT ascii('Facebook'), ascii(''), ascii('!') FROM src LIMIT 1 PREHOOK: type: QUERY PREHOOK: Input: default@src PREHOOK: Output: file:/tmp/sdong/hive_2011-02-10_17-30-24_162_6746865674356891089/-mr-10000 POSTHOOK: query: SELECT ascii('Facebook'), ascii(''), ascii('!') FROM src LIMIT 1 POSTHOOK: type: QUERY POSTHOOK: Input: default@src POSTHOOK: Output: file:/tmp/sdong/hive_2011-02-10_17-30-24_162_6746865674356891089/-mr-10000 70 0 33