Am trying to concat a string with data row in a table using Hive.
which looks like this in SQL
SELECT 'Select * from ' + [Column] + '; '
FROM table_name
ORDER BY [table_name]
Result Should be - SELECT * FROM abc; SELECT * FROM asd; SELECT * FROM xyz..
Unable to write or find something related to this in Hive command.
Use concat() function:
'SELECT concat('Select * from ', [table_name], '; ')
FROM your_table
ORDER BY [table_name]'
if a [table_name] is a column containing table_name
Concate the string data which is in row. Say x , y to be the column names.
insert into orders(1,"a");
insert into orders(2,"b");
Here suppose we want to concate "a" , "b" as one entity. So we do as follow
select concat_ws(',',collect_list(a,b)) from orders;
You can use concat to accomplish your task. But if you directly put ";" inside concat function it may show "can not recognize input error" to avoid this use \ before;
below is the tested and working example of the same
select concat("select * from ", col , " \;") from table
output:
select * from A;
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