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  • Committer: Brian Aker
  • Date: 2009-07-11 19:23:04 UTC
  • mfrom: (1089.1.14 merge)
  • Revision ID: brian@gaz-20090711192304-ootijyl5yf9jq9kd
Merge Brian

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drizzled/opt_sum.cc
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#include <drizzled/item/sum.h>
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#include <drizzled/item/cmpfunc.h>
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static bool find_key_for_maxmin(bool max_fl, TABLE_REF *ref, Field* field,
 
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static bool find_key_for_maxmin(bool max_fl, table_reference_st *ref, Field* field,
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                                COND *cond, uint32_t *range_fl,
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                                uint32_t *key_prefix_length);
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static int reckey_in_range(bool max_fl, TABLE_REF *ref, Field* field,
 
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static int reckey_in_range(bool max_fl, table_reference_st *ref, Field* field,
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                            COND *cond, uint32_t range_fl, uint32_t prefix_len);
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static int maxmin_in_range(bool max_fl, Field* field, COND *cond);
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        if (expr->real_item()->type() == Item::FIELD_ITEM)
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        {
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          unsigned char key_buff[MAX_KEY_LENGTH];
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          TABLE_REF ref;
 
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          table_reference_st ref;
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          uint32_t range_fl, prefix_len;
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          ref.key_buff= key_buff;
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        if (expr->real_item()->type() == Item::FIELD_ITEM)
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        {
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          unsigned char key_buff[MAX_KEY_LENGTH];
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          TABLE_REF ref;
 
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          table_reference_st ref;
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          uint32_t range_fl, prefix_len;
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          ref.key_buff= key_buff;
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    1        We can use index to get MIN/MAX value
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*/
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static bool matching_cond(bool max_fl, TABLE_REF *ref, KEY *keyinfo,
 
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static bool matching_cond(bool max_fl, table_reference_st *ref, KEY *keyinfo,
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                          KEY_PART_INFO *field_part, COND *cond,
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                          key_part_map *key_part_used, uint32_t *range_fl,
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                          uint32_t *prefix_len)
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*/
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static bool find_key_for_maxmin(bool max_fl, TABLE_REF *ref,
 
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static bool find_key_for_maxmin(bool max_fl, table_reference_st *ref,
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                                Field* field, COND *cond,
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                                uint32_t *range_fl, uint32_t *prefix_len)
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{
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    1        WHERE was not true for the found row
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*/
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static int reckey_in_range(bool max_fl, TABLE_REF *ref, Field* field,
 
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static int reckey_in_range(bool max_fl, table_reference_st *ref, Field* field,
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                            COND *cond, uint32_t range_fl, uint32_t prefix_len)
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{
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  if (key_cmp_if_same(field->table, ref->key_buff, ref->key, prefix_len))