58 lines
2.0 KiB
Plaintext
58 lines
2.0 KiB
Plaintext
-- case: R05 column, the first 3 has string values, but all the last are NULLs, so that coredump happens when prefix compress
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--
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CREATE TABLE cmpr_nulls_prefix_raw
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(
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R00 int,
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R01 varchar(20),
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R02 varchar(20),
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R03 varchar(20),
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R04 varchar(20),
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R05 varchar(20),
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R06 varchar(20),
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R07 varchar(20),
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R08 varchar(20),
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R09 varchar(20)
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);
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-- make the first 3 R05 has non-NULL string.
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insert into cmpr_nulls_prefix_raw(R00, R01, R02, R03, R04, R05, R06, R07, R08, R09) select generate_series(1,3),
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'aaaaaaaaaaaaa', 'aaaaaaaaaaaaa', 'aaaaaaaaaaaaa', 'aaaaaaaaaaaaa', 'aaaaaaaaaaaaa',
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'aaaaaaaaaaaaa', 'aaaaaaaaaaaaa', 'aaaaaaaaaaaaa', 'aaaaaaaaaaaaa';
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-- make the other R05 has NULLs tring.
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insert into cmpr_nulls_prefix_raw(R00, R01, R02, R03, R04, R06, R07, R08, R09) select generate_series(1,600),
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'aaaaaaaaaaaaa', 'aaaaaaaaaaaaa', 'aaaaaaaaaaaaa', 'aaaaaaaaaaaaa',
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'aaaaaaaaaaaaa', 'aaaaaaaaaaaaa', 'aaaaaaaaaaaaa', 'aaaaaaaaaaaaa';
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COPY cmpr_nulls_prefix_raw TO '@abs_srcdir@/data/cmpr_nulls_prefix.data';
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CREATE TABLE cmpr_nulls_prefix
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(
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R00 int,
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R01 varchar(20) PREFIX,
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R02 varchar(20) PREFIX,
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R03 varchar(20) PREFIX,
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R04 varchar(20) PREFIX,
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R05 varchar(20) PREFIX,
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R06 varchar(20) PREFIX,
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R07 varchar(20) PREFIX,
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R08 varchar(20) PREFIX,
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R09 varchar(20) PREFIX
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) ;
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COPY cmpr_nulls_prefix FROM '@abs_srcdir@/data/cmpr_nulls_prefix.data';
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SELECT (SELECT COUNT(*) FROM cmpr_nulls_prefix) - (SELECT COUNT(*) FROM cmpr_nulls_prefix_raw);
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?column?
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----------
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0
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(1 row)
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(SELECT * FROM cmpr_nulls_prefix) MINUS ALL (SELECT * FROM cmpr_nulls_prefix_raw);
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r00 | r01 | r02 | r03 | r04 | r05 | r06 | r07 | r08 | r09
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-----+-----+-----+-----+-----+-----+-----+-----+-----+-----
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(0 rows)
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(SELECT * FROM cmpr_nulls_prefix_raw) MINUS ALL (SELECT * FROM cmpr_nulls_prefix);
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r00 | r01 | r02 | r03 | r04 | r05 | r06 | r07 | r08 | r09
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-----+-----+-----+-----+-----+-----+-----+-----+-----+-----
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(0 rows)
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DROP TABLE cmpr_nulls_prefix;
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DROP TABLE cmpr_nulls_prefix_raw;
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\! rm '@abs_srcdir@/data/cmpr_nulls_prefix.data';
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