Materialize/doc/developer/design/static/qgm/simple-scalar-subquery.svg

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<text text-anchor="middle" x="237.5" y="-7.8" font-family="Times,serif" font-size="14.00">select * from t1 where f1 = (select f1 from t2); (before rewrites)</text>
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<text text-anchor="middle" x="516" y="-473.78" font-family="Times,serif" font-size="14.00">Distinct: Preserve</text>
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<text text-anchor="middle" x="516" y="-450.78" font-family="Times,serif" font-size="14.00">0: Q0.c0 as F1</text>
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