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MDEV-12617 CASE and CASE-alike hybrid functions do not preserve exact data types

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Alexander Barkov
2017-05-04 11:38:55 +04:00
parent 78a891c87b
commit 01b308c39c
8 changed files with 275 additions and 149 deletions
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sql/sql_type.h
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@ -535,6 +535,7 @@ protected:
public:
static const Type_handler *blob_type_handler(uint max_octet_length);
static const Type_handler *string_type_handler(uint max_octet_length);
static const Type_handler *bit_and_int_mixture_handler(uint max_char_len);
/**
Return a string type handler for Item
If too_big_for_varchar() returns a BLOB variant, according to length.