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DB

Redischevron-rightIndex(인덱슀)?chevron-rightDB Transaction & Lockchevron-rightλ™μ‹œμ„± μ œμ–΄μ— κ΄€ν•˜μ—¬chevron-rightLock(잠금)μ΄λž€?chevron-rightActiveRecord lock vs with_lockchevron-rightTable lock vs Row lockchevron-rightWHERE 1=1 ꡬ문에 λŒ€ν•˜μ—¬chevron-rightCOUNT(*) vs COUNT(indexed column)chevron-rightπŸ“•κ΄€κ³„ν˜• λ°μ΄ν„°λ² μ΄μŠ€ μ‹€μ „μž…λ¬Έchevron-rightπŸ“”SQL 첫걸음chevron-rightπŸ“”λͺ¨λ‘μ˜ SQLchevron-right
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Last updated 4 years ago