[mysql.delete]

mysql.delete is a slot in the mysql namespace, in Hyperlambda, the language of Magic Cloud. Deletes rows through the current MySQL connection; include a [where] child unless intentionally deleting every row in the table.

  • Returns: Resolves to the number of rows affected
  • Scope: requires mysql.connection - Requires an open MySQL connection created by [mysql.connect]

Arguments

Required arguments come first, then the optional ones in the order they are declared.

Argument Type Required Description
[table] string yes Table name to use in the SQL statement.
[where] lambda yes Required boolean predicate tree — destructive SQL must constrain affected rows.
[where] / [and] lambda no Boolean AND group.
[where] / [and] / any node name object yes Column condition; suffix the name with .eq, .neq, .gt, .gte, .lt, .lte, .like, .ilike, or .in to select an operator. Can be repeated.
[where] / [and] / any node name / unnamed child node object no Value item used by operators such as .in.
[where] / [and] / [or] lambda no Boolean OR group. Can be repeated.
[where] / [and] / [or] / any node name object yes Column condition; suffix the name with .eq, .neq, .gt, .gte, .lt, .lte, .like, .ilike, or .in to select an operator. Can be repeated.
[where] / [and] / [or] / any node name / unnamed child node object no Value item used by operators such as .in.
[where] / [or] lambda no Boolean OR group.
[where] / [or] / any node name object yes Column condition; suffix the name with .eq, .neq, .gt, .gte, .lt, .lte, .like, .ilike, or .in to select an operator. Can be repeated.
[where] / [or] / any node name / unnamed child node object no Value item used by operators such as .in.
[where] / [or] / [and] lambda no Boolean AND group. Can be repeated.
[where] / [or] / [and] / any node name object yes Column condition; suffix the name with .eq, .neq, .gt, .gte, .lt, .lte, .like, .ilike, or .in to select an operator. Can be repeated.
[where] / [or] / [and] / any node name / unnamed child node object no Value item used by operators such as .in.
[generate] bool no Whether to only generate SQL and parameter nodes instead of executing it. Default: false.

Nodes nested deeper than 6 levels, and nodes that repeat one of their own ancestors, are not listed. The JSON declaration below has all of them.

JSON declaration

This is the complete declaration of mysql.delete, as the running system describes it. It is also published as slot.json.

JSON declaration (loads when opened)

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