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Bug#40814 CSV engine does not parse \X characters when they occur in unquoted fields

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When a .CSV file for table in the CSV engine contains
\X characters as part of unquoted fields, e.g.
    
2,naraya\nan
    
\n is not interpreted as a new line (it is however interpreted as a
newline in a quoted field).
    
The old algorithm copied the entire value for a unquoted field without
parsing the \X characters. 
    
The new algorithm adds the capability to handle \X characters in the 
unquoted fields of a .CSV file.
This commit is contained in:
V Narayanan
2009-12-03 17:18:43 +05:30
parent 187958a951
commit 1aecdd3148
3 changed files with 201 additions and 8 deletions
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56
mysql-test/r/csv.result
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@@ -5407,4 +5407,60 @@ test.t1 repair status OK
select * from t1 limit 1;
a
drop table t1;
#
# Test for the following cases
# 1) integers and strings enclosed in quotes
# 2) integers and strings not enclosed in quotes
# 3) \X characters with quotes
# 4) \X characters outside quotes
#
CREATE TABLE t1(c1 INT NOT NULL, c2 VARCHAR(50) NOT NULL) ENGINE=csv;
# remove the already existing .CSV file if any
# create the .CSV file that contains the hard-coded data used in
# testing
1,"integer sans quotes"
1,string sans quotes
1,quotes"in between" strings
"1",Integer with quote and string with no quote
1,"escape sequence \n \" \\ \r \a within quotes"
1,escape sequence \n \" \\ \r \a without quotes
# select from the table in which the data has been filled in using
# the hard-coded .CSV file
SELECT * FROM t1;
c1 c2
1 integer sans quotes
1 string sans quotes
1 quotes"in between" strings
1 Integer with quote and string with no quote
1 escape sequence
" \
\a within quotes
1 escape sequence
" \
\a without quotes
DROP TABLE t1;
# Test for the case when a field begins with a quote, but does not end in a
# quote.
# Note: This results in an error.
CREATE TABLE t1(c1 INT NOT NULL, c2 VARCHAR(50) NOT NULL) ENGINE=csv;
# remove the already existing .CSV file if any
# create the .CSV file that contains the hard-coded data used in
# testing
1,"string only at the beginning quotes
# select from the table in which the data has been filled in using
# the hard-coded .CSV file
SELECT * FROM t1;
ERROR HY000: Table 't1' is marked as crashed and should be repaired
DROP TABLE t1;
# Test for the case when a field ends with a quote, but does not begin in a
# quote.
# Note: This results in an error.
CREATE TABLE t1(c1 INT NOT NULL, c2 VARCHAR(50) NOT NULL) ENGINE=csv;
# remove the already existing .CSV file if any
# create the .CSV file that contains the hard-coded data used in
# testing
1,string with only ending quotes"
# select from the table in which the data has been filled in using
# the hard-coded .CSV file
SELECT * FROM t1;
ERROR HY000: Table 't1' is marked as crashed and should be repaired