538 lines
20 KiB
Markdown
538 lines
20 KiB
Markdown
<!-- Generated by documentation.js. Update this documentation by updating the source code. -->
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# NodeQuery
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Class for connection management
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**Parameters**
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- `config` **[object](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object)** connection parameters
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## constructor
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Constructor
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**Parameters**
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- `config` **[object](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object)** connection parameters
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**Examples**
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```javascript
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let nodeQuery = require('ci-node-query')({
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driver: 'mysql',
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connection: {
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host: 'localhost',
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user: 'root',
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password: '',
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database: 'mysql'
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}
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});
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```
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```javascript
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let nodeQuery = require('ci-node-query')({
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driver: 'sqlite',
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connection: ':memory:'
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});
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```
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## getQuery
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Return an existing query builder instance
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object
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# QueryBuilder
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**Extends QueryBuilderBase**
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Main object that builds SQL queries.
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**Parameters**
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- `Driver` **Driver** The syntax driver for the database
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- `Adapter` **Adapter** The database module adapter for running queries
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## query
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Run an arbitrary sql query. Run as a prepared statement.
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**Parameters**
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- `sql` **[string](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The sql to execute
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- `params` **\[[Array](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array)]** The query parameters
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Returns **[Promise](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise)** Promise with result of query
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## resetQuery
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Reset the object state for a new query
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Returns **void**
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## truncate
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Empties the selected database table
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**Parameters**
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- `table` **[string](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** the name of the table to truncate
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Returns **(void | [Promise](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise))** Returns a promise if no callback is supplied
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## end
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Closes the database connection for the current adapter
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Returns **void**
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## select
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Specify rows to select in the query
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**Parameters**
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- `fields` **([String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String) \| [Array](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array))** The fields to select from the current table
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**Examples**
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```javascript
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query.select('foo, bar'); // Select multiple fields with a string
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```
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```javascript
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query.select(['foo', 'bar']); // Select multiple fileds with an array
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```
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## from
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Specify the database table to select from
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**Parameters**
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- `tableName` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The table to use for the current query
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**Examples**
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```javascript
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query.from('tableName');
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```
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```javascript
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query.from('tableName t'); // Select the table with an alias
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```
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## like
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Add a 'like/ and like' clause to the query
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**Parameters**
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- `field` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The name of the field to compare to
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- `val` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The value to compare to
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- `pos` **\[[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)]** The placement of the wildcard character(s): before, after, or both (optional, default `both`)
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## notLike
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Add a 'not like/ and not like' clause to the query
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**Parameters**
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- `field` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The name of the field to compare to
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- `val` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The value to compare to
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- `pos` **\[[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)]** The placement of the wildcard character(s): before, after, or both (optional, default `both`)
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## orLike
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Add an 'or like' clause to the query
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**Parameters**
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- `field` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The name of the field to compare to
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- `val` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The value to compare to
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- `pos` **\[[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)]** The placement of the wildcard character(s): before, after, or both (optional, default `both`)
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## orNotLike
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Add an 'or not like' clause to the query
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**Parameters**
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- `field` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The name of the field to compare to
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- `val` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The value to compare to
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- `pos` **\[[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)]** The placement of the wildcard character(s): before, after, or both (optional, default `both`)
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## having
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Add a 'having' clause
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**Parameters**
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- `key` **([String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String) \| [Object](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object))** The name of the field and the comparision operator, or an object
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- `val` **\[([String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String) \| [Number](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number))]** The value to compare if the value of key is a string
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## orHaving
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Add an 'or having' clause
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**Parameters**
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- `key` **([String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String) \| [Object](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object))** The name of the field and the comparision operator, or an object
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- `val` **\[([String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String) \| [Number](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number))]** The value to compare if the value of key is a string
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## where
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Set a 'where' clause
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**Parameters**
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- `key` **([String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String) \| [Object](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object))** The name of the field and the comparision operator, or an object
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- `val` **\[([String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String) \| [Number](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number))]** The value to compare if the value of key is a string
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## orWhere
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Set a 'or where' clause
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**Parameters**
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- `key` **([String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String) \| [Object](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object))** The name of the field and the comparision operator, or an object
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- `val` **\[([String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String) \| [Number](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number))]** The value to compare if the value of key is a string
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## whereIsNull
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Select a field that is Null
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**Parameters**
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- `field` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The name of the field that has a NULL value
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## whereIsNotNull
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Specify that a field IS NOT NULL
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**Parameters**
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- `field` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The name so the field that is not to be null
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## orWhereIsNull
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Field is null prefixed with 'OR'
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**Parameters**
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- `field` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The name of the field
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## orWhereIsNotNull
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Field is not null prefixed with 'OR'
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**Parameters**
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- `field` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The name of the field
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## whereIn
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Set a 'where in' clause
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**Parameters**
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- `key` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** the field to search
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- `values` **[Array](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array)** the array of items to search in
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## orWhereIn
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Set a 'or where in' clause
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**Parameters**
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- `key` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** the field to search
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- `values` **[Array](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array)** the array of items to search in
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## whereNotIn
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Set a 'where not in' clause
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**Parameters**
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- `key` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** the field to search
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- `values` **[Array](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array)** the array of items to search in
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## orWhereNotIn
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Set a 'or where not in' clause
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**Parameters**
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- `key` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** the field to search
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- `values` **[Array](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array)** the array of items to search in
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## set
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Set values for insertion or updating
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**Parameters**
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- `key` **([String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String) \| [Object](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object))** The key or object to use
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- `val` **\[[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)]** The value if using a scalar key
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**Examples**
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```javascript
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query.set('foo', 'bar'); // Set a key, value pair
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```
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```javascript
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query.set({foo:'bar'}); // Set with an object
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```
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## join
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Add a join clause to the query
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**Parameters**
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- `table` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The table you are joining
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- `cond` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The join condition.
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- `type` **\[[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)]** The type of join, which defaults to inner (optional, default `'inner'`)
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## groupBy
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Group the results by the selected field(s)
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**Parameters**
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- `field` **([String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String) \| [Array](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array))** The name of the field to group by
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## orderBy
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Order the results by the selected field(s)
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**Parameters**
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- `field` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The field(s) to order by
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- `type` **\[[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)]** The order direction, ASC or DESC (optional, default `'ASC'`)
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## limit
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Put a limit on the query
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**Parameters**
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- `limit` **[Number](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number)** The maximum number of rows to fetch
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- `offset` **\[[Number](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number)]** The row number to start from
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## groupStart
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Adds an open paren to the current query for logical grouping
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## orGroupStart
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Adds an open paren to the current query for logical grouping,
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prefixed with 'OR'
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## orNotGroupStart
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Adds an open paren to the current query for logical grouping,
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prefixed with 'OR NOT'
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## groupEnd
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Ends a logical grouping started with one of the groupStart methods
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Returns **[QueryBuilder](#querybuilder)** The Query Builder object, for chaining
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## get
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Get the results of the compiled query
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**Parameters**
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- `table` **\[[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)]** The table to select from
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- `limit` **\[[Number](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number)]** A limit for the query
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- `offset` **\[[Number](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number)]** An offset for the query
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**Examples**
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```javascript
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query.get('table_name').then(promiseCallback); // Get all the rows in the table
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```
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```javascript
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query.get('table_name', 5); // Get 5 rows from the table
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```
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```javascript
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query.get(); // Get the results of a query generated with other methods
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```
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Returns **[Promise](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise)<[Result](#result)>** Promise containing the result of the query
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## insert
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Run the generated insert query
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**Parameters**
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- `table` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The table to insert into
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- `data` **\[[Object](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object)]** Data to insert, if not already added with the 'set' method
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Returns **[Promise](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise)<[Result](#result)>** Promise containing the result of the query
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## insertBatch
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Insert multiple sets of rows at a time
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**Parameters**
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- `table` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The table to insert into
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- `data` **[Array](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array)** The array of objects containing data rows to insert
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**Examples**
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```javascript
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query.insertBatch('foo',[{id:1,val:'bar'},{id:2,val:'baz'}])
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.then(promiseCallback);
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```
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Returns **[Promise](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise)<[Result](#result)>** Promise containing the result of the query
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## update
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Run the generated update query
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**Parameters**
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- `table` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The table to insert into
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- `data` **\[[Object](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object)]** Data to insert, if not already added with the 'set' method
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Returns **[Promise](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise)<[Result](#result)>** Promise containing the result of the query
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## delete
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Run the generated delete query
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**Parameters**
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- `table` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The table to insert into
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- `where` **\[[Object](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object)]** Where clause for delete statement
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Returns **[Promise](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise)<[Result](#result)>** Promise containing the result of the query
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## getCompiledSelect
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Return generated select query SQL
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**Parameters**
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- `table` **\[[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)]** the name of the table to retrieve from
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- `reset` **\[[Boolean](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean)]** Whether to reset the query builder so another query can be built (optional, default `true`)
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Returns **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The compiled sql statement
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## getCompiledInsert
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Return generated insert query SQL
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**Parameters**
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- `table` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** the name of the table to insert into
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- `reset` **\[[Boolean](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean)]** Whether to reset the query builder so another query can be built (optional, default `true`)
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Returns **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The compiled sql statement
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## getCompiledUpdate
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Return generated update query SQL
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**Parameters**
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- `table` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** the name of the table to update
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- `reset` **\[[Boolean](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean)]** Whether to reset the query builder so another query can be built (optional, default `true`)
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Returns **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The compiled sql statement
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## getCompiledDelete
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Return generated delete query SQL
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**Parameters**
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- `table` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** the name of the table to delete from
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- `reset` **\[[Boolean](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean)]** Whether to reset the query builder so another query can be built (optional, default `true`)
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Returns **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)** The compiled sql statement
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# Result
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Query result object
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**Parameters**
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- `rows` **[Array](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array)** the data rows of the result
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- `columns` **[Array](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array)** the column names in the result
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## rowCount
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Get the number of rows returned by the query
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Returns **[Number](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number)** the number of rows in the result
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## columnCount
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Get the number of columns returned by the query
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Returns **[Number](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number)** the number of columns in the result
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