data types TEXT, CHAR, VARCHAR, FLOAT and DOUBLE are not yet supported by vectorized path
This patch introduces an example for Google benchmarking suite to measure a perf diff
b/w legacy scan/filtering code and the templated version
SCommand StrFilterCmd::duplicate() missed these two lines:
filterCmd->leftColType = leftColType;
filterCmd->rightColType = rightColType;
which exist in the parent's FilterCommand::duplicate().
Rewriting the code to avoid duplication by using more inherited
methods/constructors. This reduces the probability of similar bugs
in the future.
column width
RTSCommand was modified to use a fabric that produces CC class based on column width
NB this patch doesn't affect PseudoCC that also leverages ColumnCommand
- MCOL-4527 Simple query performace is degraded between 5.4 and 5.5
xxx_nopad_bin collations are now around 30% faster on simple queries like:
SELECT * FROM t1 WHERE short_char_column_nopad_bin = 'literal'
The gain is achieved by comparing two short CHAR values as uint64_t.
Note, this patch does not affect xxx_bin collations!
It wouldn't be correct to apply the same improvement for xxx_bin
collations (i.e. with PAD SPACE attribute), because it would change
the way how trailing spaces are compared.
- MCOL-4539 WHERE short_char_column='literal' ignores the collation on a huge table
Only the first thread used a correct collation when performing:
WHERE short_char_char='literal'
Other (15) threads used the server default collation, because
the charsetNumber attribute was not copyed during cloning.
- This patch also adds mtr/basic/suite.opt, so "mtr" can run without --extern.
Removed uint128 from joblist/lbidlist.*
Another toString() method for wide-decimal that is EMPTY/NULL aware
Unified decimal processing in WF functions
Fixed a potential issue in EqualCompData::operator() for
wide-decimal processing
Fixed some signedness warnings
Introduced fDecimalOverflowCheck to enable/disable overflow check.
Add support into a FunctionColumn.
Low level scanning crashes on medium sized data sets.
Binary NULL magic now consists of a series of BINARYEMPTYROW-s + BINARYNULL
in the end.
ByteStream now has hexbyte alias.
Added ColumnCommand::getEmptyRowValue to support 16 byte EMPTY values.
* TEXT and BLOB now have separate identifiers internally
* TEXT columns are identified as such in system catalog
* cpimport only requires hex input for BLOB, not TEXT
