object RelationSQL extends Serializable
The RelationSQL companion object provides factory methods for creating RelationSQL
object.
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def
apply(relName: String): RelationSQL
Create a SQL-relation from a saved relation.
Create a SQL-relation from a saved relation.
- relName
the name of the relation
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def
apply(name: String, colName: Seq[String], row: Seq[Row], key: Int, domain: String, fKeys: Seq[(String, String, Int)]): RelationSQL
Create a SQL-relation from a sequence of row/tuples.
Create a SQL-relation from a sequence of row/tuples. These rows must be converted to columns.
- name
the name of the relation
- colName
the names of columns
- row
the sequence of rows to be converted to columns for the columnar relation
- key
the column number for the primary key (< 0 => no primary key)
- domain
an optional string indicating domains for columns (e.g., 'SD' = 'StrNum', 'Double')
- fKeys
an optional sequence of foreign keys - Seq (column name, ref table name, ref column position)
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def
apply(name: String, colName: Seq[String], col: Vector[Vec] = null, key: Int = 0, domain: String = null, fKeys: Seq[(String, String, Int)] = null): RelationSQL
Create a SQL-relation object.
Create a SQL-relation object.
- name
the name of the relation
- colName
the names of columns
- col
the Scala Vector of columns making up the columnar relation
- key
the column number for the primary key (< 0 => no primary key)
- domain
an optional string indicating domains for columns (e.g., 'SD' = 'StrNum', 'Double')
- fKeys
an optional sequence of foreign keys - Seq (column name, ref table name, ref column position)
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def
from(relNames: String*): (RelationSQL, RelationSQL)
Create a SQL-relation from a saved relation.
Create a SQL-relation from a saved relation. FIX - should handle other than 2 relations
- relNames
the names of the relations
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