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| From: | Jørgen Løland | Date: | November 20 2009 1:59pm |
| Subject: | Re: Does it make sense to push XOR conditions to an index? | ||
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No, AFAICT no optimization is applied to XORs. There is also an interesting comment in the Item_cond_xor documentation: XOR is Item_cond because we could like to optimize it later on Rick James wrote: > Are there cases where XOR would use "index merge"? > > > Rick James > MySQL Geeks - Consulting & Review -- Jørgen Løland
| Thread | ||
|---|---|---|
| • Does it make sense to push XOR conditions to an index? | Jørgen Løland | 18 Nov |
| • RE: Does it make sense to push XOR conditions to an index? | Rick James | 18 Nov |
| • Re: Does it make sense to push XOR conditions to an index? | Sergei Golubchik | 18 Nov |
| • Re: Does it make sense to push XOR conditions to an index? | Jørgen Løland | 19 Nov |
| • Re: Does it make sense to push XOR conditions to an index? | Sergei Golubchik | 19 Nov |
| • Re: Does it make sense to push XOR conditions to an index? | Jørgen Løland | 20 Nov |