mirror of
				https://github.com/MariaDB/server.git
				synced 2025-10-31 02:46:29 +01:00 
			
		
		
		
	
		
			
				
	
	
		
			65 lines
		
	
	
	
		
			1.3 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			65 lines
		
	
	
	
		
			1.3 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
| #
 | |
| # NULL attribute and DEFAULT NULL in columns
 | |
| #
 | |
| # Usage:
 | |
| # let $col_definition = <column type (and possibly more options)>;
 | |
| # let $col_default = <default non-null value for a column>;
 | |
| # --source col_null.inc
 | |
| #
 | |
| # We will add NULL at the end of $col;
 | |
| #
 | |
| # Also, if $col_default is defined, 
 | |
| # we will create a table with 3 columns (one with DEFAULT NULL, 
 | |
| # one with DEFAULT $col_default, and one without any default)
 | |
| #
 | |
| 
 | |
| --disable_warnings
 | |
| DROP TABLE IF EXISTS t1;
 | |
| --enable_warnings
 | |
| 
 | |
| --let $create_definition = c $col_definition NULL
 | |
| --source create_table.inc
 | |
| SHOW COLUMNS IN t1;
 | |
| if ($mysql_errname)
 | |
| {
 | |
|   --source unexpected_result.inc
 | |
| }
 | |
| if (!$mysql_errname)
 | |
| {
 | |
|   INSERT INTO t1 (c) VALUES (NULL);
 | |
|   if ($mysql_errname)
 | |
|   {
 | |
|     --let $functionality = NULLable columns
 | |
|     --source unexpected_result.inc
 | |
|   }
 | |
|   SELECT COUNT(c), COUNT(*) FROM t1;
 | |
| 
 | |
|   DROP TABLE t1;
 | |
| }
 | |
| 
 | |
| if ($col_default != '')
 | |
| {
 | |
|   let $create_definition =
 | |
|     c $col_definition NULL,
 | |
|     c1 $col_definition NULL DEFAULT NULL,
 | |
|     c2 $col_definition NULL DEFAULT $col_default
 | |
|   ;
 | |
|   --source create_table.inc
 | |
|   if ($mysql_errname)
 | |
|   {
 | |
|     --source unexpected_result.inc
 | |
|   }
 | |
|   if (!$mysql_errname)
 | |
|   {
 | |
|     SHOW COLUMNS IN t1;
 | |
| 
 | |
|     INSERT INTO t1 (c) VALUES (NULL);
 | |
|     SELECT COUNT(c2), COUNT(c1), COUNT(c), COUNT(*) FROM t1;
 | |
| 
 | |
|     DROP TABLE t1;
 | |
|   }
 | |
| }
 | |
| 
 | |
| # We don't want to preserve it
 | |
| let $col_default = ;
 | |
| 
 | 
