row_to_json 节点 postgres 上的 WHERE 子句

如何解决row_to_json 节点 postgres 上的 WHERE 子句

我正在使用以下查询从我的 postgres 数据库中检索一些数据：

  properties.
  includeAdditionalProperties = false

  
  generateBuilders = false

  es (has the side-effect of making those properties non-null).
  usePrimitives = false

  
  source = files("${sourceSets.main.output.resourcesDir}/json")

  
  targetDirectory = file("${project.buildDir}/generated-sources/js2p")

 
  targetPackage = ''

  
  propertyWordDelimiters = [] as char[]

  
  useLongIntegers = false

 
  useBigIntegers = false

  
  useDoubleNumbers = true
  

  useBigDecimals = false

  // Whether to include hashCode and equals methods in generated Java types.
  includeHashcodeAndEquals = true

  // Whether to include a toString method in generated Java types.
  includeToString = true

  // The style of annotations to use in the generated Java types. Supported values:
  //  - jackson (alias of jackson2)
  //  - jackson2 (apply annotations from the Jackson 2.x library)
  //  - jackson1 (apply annotations from the Jackson 1.x library)
  //  - gson (apply annotations from the Gson library)
  //  - moshi1 (apply annotations from the Moshi 1.x library)
  //  - none (apply no annotations at all)
  annotationStyle = 'jackson'

  // A fully qualified class name,referring to a custom annotator class that implements
  // org.jsonschema2pojo.Annotator and will be used in addition to the one chosen
  // by annotationStyle. If you want to use the custom annotator alone,set annotationStyle to none.
  customAnnotator = 'org.jsonschema2pojo.NoopAnnotator'

  // Whether to include JSR-303/349 annotations (for schema rules like minimum,maximum,etc) in
  // generated Java types. Schema rules and the annotation they produce:
  //  - maximum = @DecimalMax
  //  - minimum = @DecimalMin
  //  - minItems,maxItems = @Size
  //  - minLength,maxLength = @Size
  //  - pattern = @Pattern
  //  - required = @NotNull
  // Any Java fields which are an object or array of objects will be annotated with @Valid to
  // support validation of an entire document tree.
  includeJsr303Annotations = false

  // The type of input documents that will be read. Supported values:
  //  - jsonschema (schema documents,containing formal rules that describe the structure of JSON data)
  //  - json (documents that represent an example of the kind of JSON data that the generated Java types
  //          will be mapped to)
  //  - yamlschema (JSON schema documents,represented as YAML)
  //  - yaml (documents that represent an example of the kind of YAML (or JSON) data that the generated Java types
  //          will be mapped to)
  sourceType = 'jsonschema'

  // Whether to empty the target directory before generation occurs,to clear out all source files
  // that have been generated previously. <strong>Be warned</strong>,when activated this option
  // will cause jsonschema2pojo to <strong>indiscriminately delete the entire contents of the target
  // directory (all files and folders)</strong> before it begins generating sources.
  removeOldOutput = false

  // The character encoding that should be used when writing the generated Java source files
  outputEncoding = 'UTF-8'

  // Whether to use {@link org.joda.time.DateTime} instead of {@link java.util.Date} when adding
  // date type fields to generated Java types.
  useJodaDates = false

  // Whether to add JsonFormat annotations when using Jackson 2 that cause format "date","time",and "date-time"
  // fields to be formatted as yyyy-MM-dd,HH:mm:ss.SSS and yyyy-MM-dd'T'HH:mm:ss.SSSZ respectively. To customize these
  // patterns,use customDatePattern,customTimePattern,and customDateTimePattern config options or add these inside a 
  // schema to affect an individual field
  formatDateTimes = true
  formatDates = true
  formatTimes = true
  
  // Whether to initialize Set and List fields as empty collections,or leave them as null.
  initializeCollections = true
  
  // Whether to add a prefix to generated classes.
  classNamePrefix = ""

  // Whether to add a suffix to generated classes.
  classNameSuffix = ""

  // An array of strings that should be considered as file extensions and therefore not included in class names.
  fileExtensions = [] as String[]

  // Whether to generate constructors or not.
  includeConstructors = false
  
  // **EXPERIMENTAL** Whether to make the generated types Parcelable for Android
  parcelable = false

  // Whether to make the generated types Serializable
  serializable = false

  // Whether to include getters or to omit these accessor methods and create public fields instead.
  includeGetters = false

  // Whether to include setters or to omit these accessor methods and create public fields instead.
  includeSetters = false

  // Whether to include dynamic getters,setters,and builders or to omit these methods.
  includeDynamicAccessors = false

  // Whether to include dynamic getters or to omit these methods.
  includeDynamicGetters = false

  // Whether to include dynamic setters or to omit these methods.
  includeDynamicSetters = false

  // Whether to include dynamic builders or to omit these methods.
  includeDynamicBuilders = false

  // What type to use instead of string when adding string properties of format "date" to Java types
  dateType = "java.time.LocalDate"

  // What type to use instead of string when adding string properties of format "date-time" to Java types
  dateTimeType = "java.time.LocalDateTime"
}


Request your assistance. Thank you

我现在还想在 WHERE 子句中为用户添加一个条件，所以我添加了以下内容：

AND u.status == ($2)

pool.query(`
  SELECT a.*,row_to_json(u.*) as users 
  FROM artworks a INNER JOIN users u USING(address) 
  WHERE (a.flag != ($1) OR a.flag IS NULL) 
  ORDER BY a.date DESC LIMIT 1000`,["ILLEGAL"]).then(users => {
  if (users) {
    res.json(users.rows);
  } 
  }).catch(err => {
    next(err);
  })

但我收到以下错误：

运算符不存在：字符变化==未知

知道我做错了什么吗？

提前致谢。

解决方法

好吧，这很简单……，在 SQL 中，“相等”是 = not ==

抱歉，我是新手:)