#database #latex | Name | Latex | Symbol| | ---- | ----------- | ---- | | 左箭头 | \leftarrow | ← | | Select | \sigma | $\sigma$ | | Projection | \Pi | $\Pi$ | |Inner Join | \bowtie | $\bowtie$ | |Cross product | \times | $\times$ | |大于等于 | \geq | $\geq$| |小于等于 | \leq | $\leq$| |不等于 | \neq | $\neq$ | | And | \wedge | $\wedge$ | | Or | \vee | $\vee$ | | Not | \neg | $\neg$ | | Left outer Join| | ⟕| | Right outer Join| |⟖| |Full Outer Join | | ⟗|