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Fixed function toStringCutToZero with argument of type String [#CLICKHOUSE-2958].

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This commit is contained in:
Alexey Milovidov 2017-04-17 20:49:11 +03:00
parent b51c6e7592
commit f76680d47e
3 changed files with 10 additions and 3 deletions
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9
dbms/src/Functions/FunctionsCoding.h
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@ -1759,16 +1759,19 @@ public:
char * begin = reinterpret_cast<char *>(&out_vec[0]);
char * pos = begin;
const char * pos_in = reinterpret_cast<const char *>(&in_vec[0]);
ColumnString::Offset_t current_in_offset = 0;
for (size_t i = 0; i < size; ++i)
{
const char * pos_in = reinterpret_cast<const char *>(&in_vec[current_in_offset]);
size_t current_size = strlen(pos_in);
memcpySmallAllowReadWriteOverflow15(pos, pos_in, current_size);
pos += current_size;
*pos = '\0';
out_offsets[i] = ++pos - begin;
pos_in += in_offsets[i];
++pos;
out_offsets[i] = pos - begin;
current_in_offset = in_offsets[i];
}
out_vec.resize(pos - begin);

2
dbms/tests/queries/0_stateless/00448_to_string_cut_to_zero.reference Normal file
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@ -0,0 +1,2 @@
1
1

2
dbms/tests/queries/0_stateless/00448_to_string_cut_to_zero.sql Normal file
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@ -0,0 +1,2 @@
SELECT DISTINCT toString(number) = toStringCutToZero(toString(number)) FROM (SELECT * FROM system.numbers LIMIT 1000);
SELECT DISTINCT toString(number) = toStringCutToZero(toFixedString(toString(number), 10)) FROM (SELECT * FROM system.numbers LIMIT 1000);