Render, translate, and query to local Andromeda

This function renders, and translates SQL, sends it to the server, and returns the results as an ffdf object

renderTranslateQuerySqlToAndromeda(
  connection,
  sql,
  andromeda,
  andromedaTableName,
  errorReportFile = file.path(getwd(), "errorReportSql.txt"),
  snakeCaseToCamelCase = FALSE,
  appendToTable = FALSE,
  oracleTempSchema = NULL,
  tempEmulationSchema = getOption("sqlRenderTempEmulationSchema"),
  integerAsNumeric = getOption("databaseConnectorIntegerAsNumeric", default = TRUE),
  integer64AsNumeric = getOption("databaseConnectorInteger64AsNumeric", default = TRUE),
  ...
)

Arguments

connection

The connection to the database server created using either connect() or dbConnect().

sql

The SQL to be send.

andromeda

An open Andromeda object, for example as created using Andromeda::andromeda().

andromedaTableName

The name of the table in the local Andromeda object where the results of the query will be stored.

errorReportFile

The file where an error report will be written if an error occurs. Defaults to 'errorReportSql.txt' in the current working directory.

snakeCaseToCamelCase

If true, field names are assumed to use snake_case, and are converted to camelCase.

appendToTable

If FALSE, any existing table in the Andromeda with the same name will be replaced with the new data. If TRUE, data will be appended to an existing table, assuming it has the exact same structure.

oracleTempSchema

DEPRECATED: use tempEmulationSchema instead.

tempEmulationSchema

Some database platforms like Oracle and Impala do not truly support temp tables. To emulate temp tables, provide a schema with write privileges where temp tables can be created.

integerAsNumeric

Logical: should 32-bit integers be converted to numeric (double) values? If FALSE 32-bit integers will be represented using R's native Integer class.

integer64AsNumeric

Logical: should 64-bit integers be converted to numeric (double) values? If FALSE 64-bit integers will be represented using bit64::integer64.

...

Parameters that will be used to render the SQL.

Value

Invisibly returns the andromeda. The Andromeda object will have a table added with the query results.

Details

This function calls the render and translate functions in the SqlRender package before calling querySqlToAndromeda().

Examples

if (FALSE) {
connectionDetails <- createConnectionDetails(
  dbms = "postgresql",
  server = "localhost",
  user = "root",
  password = "blah",
  schema = "cdm_v4"
)
conn <- connect(connectionDetails)
renderTranslatequerySqlToAndromeda(conn,
  sql = "SELECT * FROM @schema.person",
  schema = "cdm_synpuf",
  andromeda = andromeda,
  andromedaTableName = "foo"
)
disconnect(conn)

andromeda$foo
}