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...
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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.
Does the mysql UNION and UNION ALL operator always remove rows that have a NULL in them? I am doing a UNION of two SELECT statements - one
Опубликовано: 14 февр. 2018 г. null;null. Категория. Юмор.
...20193'+union+select+1,2,3,4,table_name,6,7,8,9,10,11,12,13,14+from+information_schema.tables+
i am trying to do union i get data with null values and i want do not want it to show in result. such as: column1 col2 col3 col4 col5 col6 test1 1 2 3 null 6 test2 2
Union All is => Q1 SUM (NOT NULL Q2). So if you agree about above sentences and spatially these words "NOT NULL", please tell me about your viewpoint.
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