default null not null

will MySQL allow "null" defaults in "not null" columns?...

will MySQL allow "null" defaults in "not null" columns? If the answer is yes, will that information be reflected when I ask for metadata (column.

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There is no difference. NULL DEFAULT NULL is the implicit default. From the...

There is no difference. NULL DEFAULT NULL is the implicit default. From the CREATE TABLE documentation: If neither NULL nor NOT NULL.

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DEFAULT is the value that will be inserted in the absence of an explicit va...

DEFAULT is the value that will be inserted in the absence of an explicit value in an insert / update statement. Lets assume, your DDL did not.

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That's perfectly acceptable, it basically states: You have to provide ...

That's perfectly acceptable, it basically states: You have to provide a value for this, but I have no clue what that would be. If you define a default.

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There are lots of ways to learn new things, or be reminded of old things. O...

There are lots of ways to learn new things, or be reminded of old things. One of my favorites is the QotD on sql server central. Recently there.

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Being kinda new to DB2, I have a "picky" question about column sp...

Being kinda new to DB2, I have a "picky" question about column specifications. What is the difference between 'NOT NULL WITH DEFAULT.

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Before MySQL , the column is also assigned a DEFAULT clause using the impli...

Before MySQL , the column is also assigned a DEFAULT clause using the implicit default value. To prevent this, include an explicit NOT NULL in the.

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Defaults and null values. You can use defaults, that is, values that are su...

Defaults and null values. You can use defaults, that is, values that are supplied automatically when no entry is made, with both NULL and NOT NULL columns.

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One of my coworkers came across a strange quirk in MySQL with default value...

One of my coworkers came across a strange quirk in MySQL with default values for not null columns. Take a look at this table.

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Stored routines parameters and local variables can always be set to NULL. I...

Stored routines parameters and local variables can always be set to NULL. If no DEFAULT value is specified for a local variable, its initial value will be NULL.

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Alter column, set as NOT NULL and Set Default value, PostgreSQL. # Open. cl...

Alter column, set as NOT NULL and Set Default value, PostgreSQL. # Open. clue-wiz opened this Issue on Aug 4, · 8 comments.

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Hi Tom, I'm trying to insert null values to a column defined not null ...

Hi Tom, I'm trying to insert null values to a column defined not null with default constraint. But getting error ORA= Cannot insert null.

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If you specify no default value for a column, the default is NULL unless yo...

If you specify no default value for a column, the default is NULL unless you place a NOT NULL constraint on the column. In this case, no default value exists.

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Assume that you have installed Service Pack 1 (SP1) for the Standard or Exp...

Assume that you have installed Service Pack 1 (SP1) for the Standard or Express edition of Microsoft SQL Server When you try to add a NOT NULL.

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The NOT NULL constraint specifies the column may not contain NULL values. i...

The NOT NULL constraint specifies the column may not contain NULL values. if the table foo has columns a and b (and b does not have a Default Value).

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