> For the complete documentation index, see [llms.txt](https://goooqo.docs.doyto.win/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://goooqo.docs.doyto.win/zh/query-mapping/query-object/predicate-suffix-field.md).

# 谓词后缀字段

## 谓词后缀

GoooQo采用谓词后缀映射方法，将查询对象中的字段中以预定义谓词结尾的字段映射为基本查询条件。每个基本查询条件由列名、比较运算符和比较值组成。

在查询对象中，用于映射基本查询条件的字段，命名格式为列名加谓词的别名，用于映射查询条件的列名和比较运算符，查询条件的比较值为字段的赋值。 一个查询对象实例中已赋值的字段会被映射为对应的查询条件，并由逻辑运算符AND拼接为查询子句。

以下为后缀映射的两个示例：

```go
userQuery := UserQuery{Deleted: P(true)}
users, err := userDataAccess.Query(ctx, userQuery)
// SQL="SELECT id, name, score, memo, deleted FROM t_user WHERE deleted = ?" args="[true]"

userQuery := UserQuery{IdIn: &[]int64{1, 4, 12}, Deleted: P(true)}
users, err := userDataAccess.Query(ctx, userQuery)
// SQL="SELECT id, name, score, memo, deleted FROM t_user WHERE id IN (?, ?, ?) AND deleted = ?" args="[1 4 12 true]"
```

预定义谓词谓词后缀请参考[谓词后缀表](#wei-ci-hou-zhui-biao)。

## 谓词后缀表

<table><thead><tr><th>谓词后缀</th><th>字段名称</th><th>赋值</th><th>SQL查询条件</th><th data-hidden>MongoDB Condition</th></tr></thead><tbody><tr><td>(EMPTY)</td><td>id</td><td>5</td><td>id = 5</td><td>{"id":5}</td></tr><tr><td>Eq</td><td>idEq</td><td>5</td><td>id = 5</td><td>{"idEq":5}</td></tr><tr><td>Not</td><td>idNot</td><td>5</td><td>id != 5</td><td>{"idNot":{"$ne":5}}</td></tr><tr><td>Ne</td><td>idNe</td><td>5</td><td>id &#x3C;> 5</td><td>{"idNe":{"$ne":5}}</td></tr><tr><td>Gt</td><td>idGt</td><td>5</td><td>id > 5</td><td>{"idGt":{"$gt":5}}</td></tr><tr><td>Ge</td><td>idGe</td><td>5</td><td>id >= 5</td><td>{"idGe":{"$gte":5}}</td></tr><tr><td>Lt</td><td>idLt</td><td>5</td><td>id &#x3C; 5</td><td>{"idLt":{"$lt":5}}</td></tr><tr><td>Le</td><td>idLe</td><td>5</td><td>id &#x3C;= 5</td><td>{"idLe":{"$lte":5}}</td></tr><tr><td>NotIn</td><td>idNotIn</td><td>[1,2,3]</td><td>id NOT IN (1,2,3)</td><td>{"id":{"$nin":[1, 2, 3]}}</td></tr><tr><td>In</td><td>idIn</td><td>[1,2,3]</td><td>id IN (1,2,3)</td><td>{"id":{"$in":[1, 2, 3]}}</td></tr><tr><td>Null</td><td>memoNull</td><td>false</td><td>memo IS NOT NULL</td><td>{"memo":{"$not":{"$type", 10}}}</td></tr><tr><td>Null</td><td>memoNull</td><td>true</td><td>memo IS NULL</td><td>{"memo":{"$type", 10}}</td></tr><tr><td>NotLike</td><td>nameNotLike</td><td>"arg"</td><td>name NOT LIKE '%arg%'</td><td>{"name":{"$not":{"$regex":"arg"}}}</td></tr><tr><td>Like</td><td>nameLike</td><td>"arg"</td><td>name LIKE '%arg%'</td><td>{"name":{"$regex":"arg"}}</td></tr><tr><td>NotStart</td><td>nameNotStart</td><td>"arg"</td><td>name NOT LIKE 'arg%'</td><td>{"name":{"$not":{"$regex":"^arg"}}}</td></tr><tr><td>Start</td><td>nameStart</td><td>"arg"</td><td>name LIKE 'arg%'</td><td>{"name":{"$regex":"^arg"}}</td></tr><tr><td>NotEnd</td><td>nameNotEnd</td><td>"arg"</td><td>name NOT LIKE '%arg'</td><td>{"name":{"$not":{"$regex":"arg$"}}}</td></tr><tr><td>End</td><td>nameEnd</td><td>"arg"</td><td>name LIKE '%arg'</td><td>{"name":{"$regex":"arg$"}}</td></tr><tr><td>NotContain</td><td>nameNotContain</td><td>"arg"</td><td>name NOT LIKE '%arg%’</td><td>{"name":{"$not":{"$regex":"arg"}}}</td></tr><tr><td>Contain</td><td>nameContain</td><td>"arg"</td><td>name LIKE '%arg%’</td><td>{"name":{"$regex":"arg"}}</td></tr><tr><td>Rx</td><td>nameRx</td><td>"arg\d"</td><td>name REGEXP 'arg\d’</td><td>{"name":{"$regex":"arg\d"}}</td></tr></tbody></table>


---

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