On 01/10/2018 11:48 PM, Shane Dev wrote:
Hello,
sqlite> create table source_table(value);
sqlite> create table max_value(max_value);
sqlite> insert into max_value select max(value) from source_table;
sqlite> select * from table_max_value;
max_value
sqlite>
How can the maximum value of column source_table.value be inserted into
max_value only if there are records in source_table? (If source_table is
empty, nothing should be inserted into max_value, not even a NULL)
You could add a WHERE clause to your SELECT.
INSERT INTO max_value SELECT max(value) FROM src WHERE EXISTS (SELECT
1 FROM src);
Or similar.
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