Tesseract Tips / Notes

DATA FILTER:

Clear Filter/Query Cache: In some situations when “Additional SQL” field is cleared, the dataquery may still be using the cached value from this field.
In such case we should add following URL Parameter, which informs DataQuery to re-build the query from scratch.

EX:
www.example.com/?clear_cache = 1

Using main.subtable: When we wish to apply a specific condition to a sub-table, the query is applied on the JOIN itself:

EX 1:
subtable.uid = vars:event
maintable.uid = varsproject

This is translated to someting like this:

SELECT maintable.*, subtable.*
FROM maintable JOIN subtable
ON maintable.event_id = subtable.uid AND subtable.uid = 20
WHERE
maintable.uid = 45

However, if we add main.subtable.uid… the query gets converted to as shown below:
EX 2:
main.subtable.uid = vars:event
maintable.uid = varsproject

This is translated to someting like this:

SELECT maintable.*, subtable.*
FROM maintable JOIN subtable
ON maintable.event_id = subtable.uid
WHERE
subtable.uid = 20 AND maintable.uid = 45

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