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Macro Language Elements
The section contains detailed specifications for all 1010data Macro Language elements.
Application Development
<do>
A <do> clause within a <dynamic> provides the ability for <dynamic> variables to be updated when some variable within the scope of the <dynamic> is changed.
action_="allocctrl"
<do action_="allocctrl"> changes the subprocess allocation strategy used by MDB. (Available as of version 10.25)

Macro Language Elements
The section contains detailed specifications for all 1010data Macro Language elements.
- Data Transformation
  Data transformation operations use functions and expressions to functionally alter tabular data. These operations take 0, 1, or 2 tables as input and produce a single table as a result.
- Blocks
  Blocks allow users to reuse sections of Macro Language code and to parameterize values in that code for greater flexibility and power.
- Application Development
  - <dynamic>
    The <dynamic> element creates an environment in 1010data that maintains the state of system interactions and controls the running of queries.
  - <render>
    The <render> element provides the ability to configure certain QuickApp widgets when rendered to available output targets. A single <render> element contains one or more elements that specify output targets and settings for the final output.
  - <layout>
    The <layout> element is a nestable pseudo-operation that can be used to organize <widget> elements and other <layout> elements.
  - <widget>
    <widget> is used to define all visual components of a QuickApp, including drop-downs, text boxes, tables, and calendars. The form a widget takes is controlled by the class_ attribute.
  - <do>
    A <do> clause within a <dynamic> provides the ability for <dynamic> variables to be updated when some variable within the scope of the <dynamic> is changed.
    - action_="allocctrl"
      <do action_="allocctrl"> changes the subprocess allocation strategy used by MDB. (Available as of version 10.25)
    - action_="api"
      <do action_="api"> sends a 1010data API transaction.
    - action_="cacheclear"
      <do action_="cacheclear"> clears the cache after running the associated 1010data query, if specified. If no query is specified, this action simply clears the cache. (Available as of version 10.15)
    - action_="cachectrl"
      <do action_="cachectrl"> controls cache behavior and inspects cache statistics. (Available as of version 10.25)
    - action_="clearcache"
      <do action_="clearcache"> clears the cache before running the associated 1010data query, if specified. If no query is specified, this action simply clears the cache.
    - action_="combine_tabs"
      <do action_="combine_tabs"> combines two or more tables into a new table. (Available as of version 19.48)
    - action_="compcheck"
      <do action_="compcheck"> performs a compatibility check on a given 1010data query. (Available as of version 10.27)
    - action_="files"
      <do action_="files"> retrieves a list of files in a valid FTP directory. (Available as of version 10.25)
    - action_="getdata"
      <do action_="getdata"> runs the given 1010data query and returns the results.
    - action_="getfilter"
      <do action_="getfilter"> gets the filter, if one exists, for a specified table. (Available as of version 10.23)
    - action_="getquery"
      <do action_="getquery"> places the Macro Language code of a given query into an XML variable and/or as text into a dynamic variable. (Available as of version 10.23)
    - action_="hashdel"
      <do action_="hashdel"> removes a key/value association from the user-specific private store. (Available as of version 10.23)
    - action_="hashget"
      <do action_="hashget"> retrieves the value associated with a given key from the user-specific private store. (Available as of version 10.23)
    - action_="hashput"
      <do action_="hashput"> saves a key/value association to the user-specific private store. (Available as of version 10.23)
    - action_="importtable"
      <do action_="importtable"> imports an iceberg-formatted table or a set of parquet files, and returns basic metadata statistics. (Available as of version 20.05)
    - action_="limits"
      <do action_="limits"> sets or inspects system settings. (Available as of version 10.25)
    - action_="log"
      <do action_="log"> sends a message to the 1010data system logger. (Available as of version 10.23)
    - action_="password"
      <do action_="password"> changes a user's 1010data password. (Available as of version 10.29)
    - action_="qqtoqa"
      <do action_="qqtoqa"> loads a legacy Quick Query and constructs a QuickApp with the same functionality. (Available as of version 10.34)
    - action_="query"
      <do action_="query"> runs the given 1010data query even if no data is retrieved or if the underlying block code has not changed. (Available as of version 10.15)
    - action_="savefile"
      <do action_="savefile"> saves the results of a 1010data query as a file in the user's FTP account or remote clous storage (ex. AWS S3, Azure Blob). (Available as of version 20)
    - action_="saveqa"
      <do action_="saveqa"> commits changes to the ops of a rendered and potentially modified QuickApp and saves them as a new QuickApp. (Available as of version 10.15)
    - action_="savequery"
      <do action_="savequery"> expands a given 1010data query and saves the ops resulting from the expansion as a query. (Available as of version 10.23)
    - action_="savetable"
      <do action_="savetable"> executes a given 1010data query and saves the results as a table. (Available as of version 10.23)
    - action_="setfilter"
      <do action_="setfilter"> sets the filter on a specified table. (Available as of version 10.23)
    - action_="sleep"
      <do action_="sleep"> sleeps for a specified period of time. (Available as of version 16.29)
    - action_="syskill"
      <do action_="syskill"> kills active user sessions. (Available as of prod-9)
    - action_="userprofile"
      <do action_="userprofile"> sets or retrieves user profile data and preferences. (Available as of version 10.29)
  - <do action_="sql">
    <do action_="sql"> provides a programmatic API to the SQL metadata store. (Available as of version 17.29)
  - <loop>
    <loop> is a special operation that allows one query to iteratively reference the data from each row in the results of another query.

`action_="allocctrl"`

<do action_="allocctrl"> changes the subprocess allocation strategy used by MDB. (Available as of version 10.25)

Note: This has the necessary side effect of clearing MDB's cache (so that all queries will need to be rerun).

Syntax

<dynamic>
    <do action_="allocctrl" 
     method_="def|rr|pack0|pack1" 
     parallelism_="[NUMBER_OF_SUBPROCESSES]"/>
</dynamic>

Attributes for `action_="allocctrl"`

method_

Specifies the subprocess allocation strategy for MDB to use.

Valid values are:

def
rr
pack0
pack1

parallelism_

Accepts an integer that specifies the degree of parallelism in terms of the number of subprocesses started per machine, although the exact meaning and allowable values may differ between methods.

Note: When method_="def", parallelism cannot be specified.

action_="allocctrl"

Syntax

Attributes for action_="allocctrl"

`action_="allocctrl"`

Attributes for `action_="allocctrl"`