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Symbols like ⇤ and ⇥ are used when data lineage cannot be displayed in a full length. This happens for three reasons:
- the user selected
Break lineagefrom table context menu
- the user adjusted
Graph depthand thus restricted maximum graph size
- the graph size was too large and depth was auto-adjusted to avoid overloading the web-browser.
In such cases a special symbol is displayed to alert the user about a partial data lineage. Based on the lineage direction left handed or right handed arrow appears.
Tip: To overcome problem with an oversized graph we recommend browsing the lineage on a column level.
Show only ending points is enabled some tables might be hidden. In that case double arrow is displayed. See full explanation in this help article
A triangle with an exclamation mark is displayed when table exist in a SQL statement which failed to be processed by SQL parser.
It gives you a chance to notice something might be wrong with your lineage.
1st query (valid syntax)
create table public.tmp
as select acc_id
2nd query (it contains invalid SQL syntax):
update table public.tmp as set;
TMP exists in 2 statements although only the first statements is valid and thus it got visualised.
As a next step we have detected that table
TMP exists in a failed query. Thus we display the exclamation mark next to table
TMP to alert you about it.
Right-click on exclamation mark to open a pop-up menu:
By selecting the option
Show failed SQLs all such SQL queries will be listed at bottom of the screen. You can now investigate what went wrong.