SELECT COUNT(*), 'null_tally' AS narrative FROM us WHERE a IS NULL UNION SELECT COUNT(*), 'not_null_tally' AS narrative FROM us WHERE a IS NOT
select a,b,null,null from table1 union select null,null,c,d from table2 union select null,null,null,null,e,f from table3.
gulmeli-ehvalat-and-select-1-from-select-count-concat-select...
Union select null, null, null, null, null, null, null from information_schema.tables. for a small database containing three tables. this instruction is used in sql injection I tried it and it worked but I didn't really know how it works can somebody help me...
mysql> SELECT NULL, 1+NULL, CONCAT('Invisible',NULL)
Count(*) of u0021_kinovdom.orders is 0 Can not get rows count, trying to get 10 rows Turning off 'bypass illegal union' and
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1 UNION ALL SELECT NULL,concat(0x28,column1,0x3a,column2,0x29) FROM database2.table1--. Error Based.
If I have this - tadd is the Address table: … Is there a way to exclude the apt_number if it doesn't exist? I was thinking of: … But it will return only those rows with apt_number...
A field with a NULL value is a field with no value. If a field in a table is optional, it is possible to insert a new record or update a record without adding a value to this field.