#Filter Operators

Used in the filter parameter of APIs like find, findOne, findAndCount, count of a Repository:

const repository = db.getRepository('books');

repository.find({
  filter: {
    title: {
      $eq: 'The Great Gatsby',
    },
  },
});

To support JSON serialization, NocoBase identifies query operators with a string prefixed with $.

Additionally, NocoBase provides an API to extend operators, see db.registerOperators() for details.

#General Operators

#$eq

Checks if the field value is equal to the specified value. Equivalent to SQL's =.

Example

repository.find({
  filter: {
    title: {
      $eq: 'The Great Gatsby',
    },
  },
});

Equivalent to title: 'The Great Gatsby'.

#$ne

Checks if the field value is not equal to the specified value. Equivalent to SQL's !=.

Example

repository.find({
  filter: {
    title: {
      $ne: 'The Great Gatsby',
    },
  },
});

#$is

Checks if the field value is the specified value. Equivalent to SQL's IS.

Example

repository.find({
  filter: {
    title: {
      $is: null,
    },
  },
});

#$not

Checks if the field value is not the specified value. Equivalent to SQL's IS NOT.

Example

repository.find({
  filter: {
    title: {
      $not: null,
    },
  },
});

#$col

Checks if the field value is equal to the value of another field. Equivalent to SQL's =.

Example

repository.find({
  filter: {
    title: {
      $col: 'name',
    },
  },
});

#$in

Checks if the field value is in the specified array. Equivalent to SQL's IN.

Example

repository.find({
  filter: {
    title: {
      $in: ['The Great Gatsby', 'Moby Dick'],
    },
  },
});

#$notIn

Checks if the field value is not in the specified array. Equivalent to SQL's NOT IN.

Example

repository.find({
  filter: {
    title: {
      $notIn: ['The Great Gatsby', 'Moby Dick'],
    },
  },
});

#$empty

Checks if a general field is empty. For a string field, it checks for an empty string. For an array field, it checks for an empty array.

Example

repository.find({
  filter: {
    title: {
      $empty: true,
    },
  },
});

#$notEmpty

Checks if a general field is not empty. For a string field, it checks for a non-empty string. For an array field, it checks for a non-empty array.

Example

repository.find({
  filter: {
    title: {
      $notEmpty: true,
    },
  },
});

#Logical Operators

#$and

Logical AND. Equivalent to SQL's AND.

Example

repository.find({
  filter: {
    $and: [{ title: 'The Book of Songs' }, { isbn: '1234567890' }],
  },
});

#$or

Logical OR. Equivalent to SQL's OR.

Example

repository.find({
  filter: {
    $or: [{ title: 'The Book of Songs' }, { publishedAt: { $lt: '0000-00-00T00:00:00Z' } }],
  },
});

#Boolean Field Operators

For boolean fields type: 'boolean'

#$isFalsy

Checks if a boolean field value is falsy. Field values of false, 0, and NULL are all considered $isFalsy: true.

Example

repository.find({
  filter: {
    isPublished: {
      $isFalsy: true,
    },
  },
});

#$isTruly

Checks if a boolean field value is truly. Field values of true and 1 are all considered $isTruly: true.

Example

repository.find({
  filter: {
    isPublished: {
      $isTruly: true,
    },
  },
});

#Numeric Field Operators

For numeric fields, including:

• type: 'integer'
• type: 'float'
• type: 'double'
• type: 'real'
• type: 'decimal'

#$gt

Checks if the field value is greater than the specified value. Equivalent to SQL's >.

Example

repository.find({
  filter: {
    price: {
      $gt: 100,
    },
  },
});

#$gte

Checks if the field value is greater than or equal to the specified value. Equivalent to SQL's >=.

Example

repository.find({
  filter: {
    price: {
      $gte: 100,
    },
  },
});

#$lt

Checks if the field value is less than the specified value. Equivalent to SQL's <.

Example

repository.find({
  filter: {
    price: {
      $lt: 100,
    },
  },
});

#$lte

Checks if the field value is less than or equal to the specified value. Equivalent to SQL's <=.

Example

repository.find({
  filter: {
    price: {
      $lte: 100,
    },
  },
});

#$between

Checks if the field value is between the two specified values. Equivalent to SQL's BETWEEN.

Example

repository.find({
  filter: {
    price: {
      $between: [100, 200],
    },
  },
});

#$notBetween

Checks if the field value is not between the two specified values. Equivalent to SQL's NOT BETWEEN.

Example

repository.find({
  filter: {
    price: {
      $notBetween: [100, 200],
    },
  },
});

#String Field Operators

For string fields, including string

#$includes

Checks if the string field contains the specified substring.

Example

repository.find({
  filter: {
    title: {
      $includes: 'Classic',
    },
  },
});

#$notIncludes

Checks if the string field does not contain the specified substring.

Example

repository.find({
  filter: {
    title: {
      $notIncludes: 'Classic',
    },
  },
});

#$startsWith

Checks if the string field starts with the specified substring.

Example

repository.find({
  filter: {
    title: {
      $startsWith: 'Classic',
    },
  },
});

#$notStatsWith

Checks if the string field does not start with the specified substring.

Example

repository.find({
  filter: {
    title: {
      $notStatsWith: 'Classic',
    },
  },
});

#$endsWith

Checks if the string field ends with the specified substring.

Example

repository.find({
  filter: {
    title: {
      $endsWith: 'Classic',
    },
  },
});

#$notEndsWith

Checks if the string field does not end with the specified substring.

Example

repository.find({
  filter: {
    title: {
      $notEndsWith: 'Classic',
    },
  },
});

#$like

Checks if the field value contains the specified string. Equivalent to SQL's LIKE.

Example

repository.find({
  filter: {
    title: {
      $like: 'Computer',
    },
  },
});

#$notLike

Checks if the field value does not contain the specified string. Equivalent to SQL's NOT LIKE.

Example

repository.find({
  filter: {
    title: {
      $notLike: 'Computer',
    },
  },
});

#$iLike

Checks if the field value contains the specified string, case-insensitive. Equivalent to SQL's ILIKE (PostgreSQL only).

Example

repository.find({
  filter: {
    title: {
      $iLike: 'Computer',
    },
  },
});

#$notILike

Checks if the field value does not contain the specified string, case-insensitive. Equivalent to SQL's NOT ILIKE (PostgreSQL only).

Example

repository.find({
  filter: {
    title: {
      $notILike: 'Computer',
    },
  },
});

#$regexp

Checks if the field value matches the specified regular expression. Equivalent to SQL's REGEXP (PostgreSQL only).

Example

repository.find({
  filter: {
    title: {
      $regexp: '^Computer',
    },
  },
});

#$notRegexp

Checks if the field value does not match the specified regular expression. Equivalent to SQL's NOT REGEXP (PostgreSQL only).

Example

repository.find({
  filter: {
    title: {
      $notRegexp: '^Computer',
    },
  },
});

#$iRegexp

Checks if the field value matches the specified regular expression, case-insensitive. Equivalent to SQL's ~* (PostgreSQL only).

Example

repository.find({
  filter: {
    title: {
      $iRegexp: '^COMPUTER',
    },
  },
});

#$notIRegexp

Checks if the field value does not match the specified regular expression, case-insensitive. Equivalent to SQL's !~* (PostgreSQL only).

Example

repository.find({
  filter: {
    title: {
      $notIRegexp: '^COMPUTER',
    },
  },
});

#Date Field Operators

For date fields type: 'date'

#$dateOn

Checks if the date field is on a specific day.

Example

repository.find({
  filter: {
    createdAt: {
      $dateOn: '2021-01-01',
    },
  },
});

#$dateNotOn

Checks if the date field is not on a specific day.

Example

repository.find({
  filter: {
    createdAt: {
      $dateNotOn: '2021-01-01',
    },
  },
});

#$dateBefore

Checks if the date field is before a specific value. Equivalent to being less than the provided date value.

Example

repository.find({
  filter: {
    createdAt: {
      $dateBefore: '2021-01-01T00:00:00.000Z',
    },
  },
});

#$dateNotBefore

Checks if the date field is not before a specific value. Equivalent to being greater than or equal to the provided date value.

Example

repository.find({
  filter: {
    createdAt: {
      $dateNotBefore: '2021-01-01T00:00:00.000Z',
    },
  },
});

#$dateAfter

Checks if the date field is after a specific value. Equivalent to being greater than the provided date value.

Example

repository.find({
  filter: {
    createdAt: {
      $dateAfter: '2021-01-01T00:00:00.000Z',
    },
  },
});

#$dateNotAfter

Checks if the date field is not after a specific value. Equivalent to being less than or equal to the provided date value.

Example

repository.find({
  filter: {
    createdAt: {
      $dateNotAfter: '2021-01-01T00:00:00.000Z',
    },
  },
});

#Array Field Operators

For array fields type: 'array'

#$match

Checks if the array field's value matches the values in the specified array.

Example

repository.find({
  filter: {
    tags: {
      $match: ['Literature', 'History'],
    },
  },
});

#$notMatch

Checks if the array field's value does not match the values in the specified array.

Example

repository.find({
  filter: {
    tags: {
      $notMatch: ['Literature', 'History'],
    },
  },
});

#$anyOf

Checks if the array field's value contains any of the values in the specified array.

Example

repository.find({
  filter: {
    tags: {
      $anyOf: ['Literature', 'History'],
    },
  },
});

#$noneOf

Checks if the array field's value contains none of the values in the specified array.

Example

repository.find({
  filter: {
    tags: {
      $noneOf: ['Literature', 'History'],
    },
  },
});

#$arrayEmpty

Checks if the array field is empty.

Example

repository.find({
  filter: {
    tags: {
      $arrayEmpty: true,
    },
  },
});

#$arrayNotEmpty

Checks if the array field is not empty.

Example

repository.find({
  filter: {
    tags: {
      $arrayNotEmpty: true,
    },
  },
});

#Association Field Operators

Used to check if an association exists. Field types include:

• type: 'hasOne'
• type: 'hasMany'
• type: 'belongsTo'
• type: 'belongsToMany'

#$exists

Association data exists

Example

repository.find({
  filter: {
    author: {
      $exists: true,
    },
  },
});

#$notExists

No association data exists

Example

repository.find({
  filter: {
    author: {
      $notExists: true,
    },
  },
});