Let's repeat all of this with InnoDB mysql> USE test Let doctor the input file with \N like the bug report had C:\>type C:\MySQLDBA\bug_test.txt Query OK, 10 rows affected, 4 warnings (0.02 sec) Mysql> load data local infile 'C:/MySQLDBA/bug_test.txt' Let's blank out the sql_mode, truncate the table and reload mysql> set sql_mode = '' Ouch, what happened mysql> show warnings\G Records: 10 Deleted: 0 Skipped: 0 Warnings: 4 Query OK, 10 rows affected, 4 warnings (0.00 sec) Let's run the LOAD DATA INFILE mysql> load data local infile 'C:/MySQLDBA/bug_test.txt' Next, let's make some data C:\>type C:\MySQLDBA\bug_test.txt ) ENGINE=MyISAM DEFAULT CHARSET=ascii COLLATE=ascii_bin
`name` varchar(10) COLLATE ascii_bin DEFAULT NULL,
> ENGINE=MYISAM DEFAULT CHARSET=ascii COLLATE=ascii_bin Query OK, 0 rows affected, 1 warning (0.00 sec)
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I will try to duplicate the code in that bug that did not work.įirst let's create that table from the bug report mysql> USE test Let's see if that bug was addressed since it was submitted. You brought up a post I answered : MySQL is inserting "" as 0 in decimal fields. Very short answer : No new datatypes have been created to accommodate you. ( example example example) This is not the issue, as the NULLs are there and are loaded properly into the same column when I redefine it as DECIMAL(x,0), then improperly when defined as DECIMAL(x,3). The question is whether there is a datatype that can handle decimal precision and will also insert NULLs on load.Īdditionally, I see a whole bunch of questions relating to misunderstanding of the difference between a string, an empty string, and a null value. I know that various functions could convert these 0s into NULLs. These are the types I've observed while testing:Īll of the columns in question are defined with DEFAULT NULL. I am using FIELDS TERMINATED BY and some columns do properly get NULL values, so it it not a fixed-row format issue. Some numeric types have this behavior, whereas others place a 0. Use the standard NSIS EnableWindow command.I am loading tables from character delimited text files using the LOAD DATA INFILE commnd and I would like every field with a \N, which is the NULL character in this setting, to place a NULL in the table.
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