fix(aggregate): avoid adding extra $match stage if user manually set discriminator key to correct value in first pipeline stage
#12568
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…t discriminator key to correct value in first pipeline stage Fix #12478
AbdelrahmanHafez
approved these changes
Oct 19, 2022
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Fix #12478
Summary
#12478 points out that
prepareDiscriminatorPipeline()unnecessarily adds a$matchstage with the discriminator key if the user already explicitly set the correct discriminator key in the initial$match.Examples