选择具有特定列的值为空或“默认”的行

Question

I've got a rather large DB and I need to select the fields where they are null or defaulted.

For example:

Table: Table_A
Row #1234
    name,  mname, lname
    [data] [data] [null]

I'd need a query to generalize this, so that I can select "lname", where it is NULL, or mname, or none based on its state.

--

I just need to SELECT all "NULL" or "FALSE" fields in a row, and return only those fields which are NULL or FALSE.

Answer 1

尝试

SELECT * FROM table WHERE col1 IS NULL or col2 IS NULL or ... or col1 = 'default' or col2 = 'default' ...