Adb SQLite Provider

You can use this database (among others) in your ETL:

Note

Due to SQLite's typeless nature, certain SELECT queries (e.g. scalar and aggregate functions) must be preceded by a TYPES clause to specify the return types of the columns.

To specify return types for all but the third column, and get date text strings converted to DateTime:

TYPES [long], [short],, [DateTime];
SELECT 1, 2, 3, '2020-12-31';

Data Type Mappings

This section lists which database types map to or from which .NET types when querying a SQLite server and working with its database parameters.

Unless otherwise noted, all the below .NET types can be round-tripped to the database, i.e. written out with one of the database target workers, and read back with AdbDataReaderSource<TOutput>.

Note

Mappings tagged with AdbColumnSchema below depend on whether or not an AdbColumnSchema is supplied to SetMappedType(AdbParameter, Type, AdbColumnSchema, ParameterDirection). Of the out of box workers, this is only supplied by AdbInsertTarget<TInputError>.

Provider-Independent .NET Types

.NET types below with Shallow or SingleShallowThenDeep copy policy support multi-copy, the others (with SingleShallow) do not.

.NET Type Display Name DbType enum SQL Type Example Copy Policy
Any enum or nullable enum Byte, Int16, Int32, Int64 tinyint, smallint, int, bigint Shallow
System.Boolean, System.Boolean? Boolean boolean Shallow
System.Byte, System.Byte? Byte tinyint Shallow
System.Byte[] Binary binary(7), blob, varbinary(10) SingleShallowThenDeep
System.DateTime, System.DateTime? DateTime datetime. Without AdbColumnSchema also: date. Shallow
System.DateTime, System.DateTime? Date With AdbColumnSchema: date Shallow
System.Decimal, System.Decimal? Decimal decimal(38,0), numeric(10,2) Shallow
System.Double, System.Double? Double double, float, real Shallow
System.Guid, System.Guid? Guid guid, uniqueidentifier Shallow
System.Int16, System.Int16? Int16 smallint Shallow
System.Int32, System.Int32? Int32 int Shallow
System.Int64, System.Int64? Int64 bigint, integer Shallow
System.Single, System.Single? Single float Shallow
System.String String char(32), clob, nchar(32), ntext, nvarchar(20), text, varchar(30) Shallow

Identifiers

  • Quoting character: double quote ", e.g. "My Table"
  • SQLite external documentation: SQLite Keywords

Note that dataflow column name matching is ordinal case insensitive, but a case sensitive match takes precedence over a case insensitive match. See Dataflow Column Mapping for details.

Parameters

Use named parameters of the format @MyParameterName. You can use GetPlaceholder(String) to get the placeholder in a portable manner.

Adb Information

The Adb Information example program dumps the below information with this provider querying a SQLite server. See that example for more information.

=== AdbConnectionBuilder ===
Provider=System.Data.SQLite:SQLite:


=== AdbConnection ===
DataSourceName=2fb995b3-4626-411e-8055-a1b8308bd318
DatabaseName=main
NumberOfColumnIdentifierParts=4
NumberOfColumnRestrictions=4
ServerVersion=3.30.1


=== AdbConnection.Information ===
CompositeIdentifierSeparator=.
CompositeIdentifierSeparatorPattern=\.
DataSourceProductName=SQLite
DataSourceProductVersion=3.30.1
GetPlaceholder("MyName")=@MyName
GroupByBehavior=MustContainAll
IdentifierCase=Insensitive
IdentifierPattern=(^\[\p{Lo}\p{Lu}\p{Ll}_@#][\p{Lo}\p{Lu}\p{Ll}\p{Nd}@$#_]*$)|(^\[[^\]\0]|\]\]+\]$)|(^\"[^\"\0]|\"\"+\"$)
IdentifierQuotePrefix="
IdentifierQuotePrefixes="
IdentifierQuoteSuffix="
IdentifierQuoteSuffixes="
OrderByColumnsInSelect=False
ParameterMarkerFormat={0}
ParameterMarkerPattern=@[\p{Lo}\p{Lu}\p{Ll}\p{Lm}_@#][\p{Lo}\p{Lu}\p{Ll}\p{Lm}\p{Nd}\uff3f_@#\$]*(?=\s+|$)
ParameterNameMaxLength=255
ParameterNamePattern=^[\p{Lo}\p{Lu}\p{Ll}\p{Lm}_@#][\p{Lo}\p{Lu}\p{Ll}\p{Lm}\p{Nd}\uff3f_@#\$]*(?=\s+|$)
QuotedIdentifierCase=Insensitive
QuotedIdentifierPattern=(([^\[]|\]\])*)
QuoteIdentifierPart("My Table")="My Table"
StatementSeparatorPattern=;
StringLiteralPattern='(([^']|'')*)'
SupportedJoinOperators=Inner, LeftOuter, RightOuter, FullOuter
UsesPositionalParameters=False


=== AdbConnection.TableInformation.CreateTableIdentifier("My Database"."My Schema".MyTable) ===
OriginalCompositeName="My Database"."My Schema".MyTable
OriginalTableName=MyTable
OriginalSchemaName="My Schema"
OriginalCatalogName="My Database"
QuotedCompositeName="My Database"."My Schema"."MyTable"
QuotedTableName="MyTable"
QuotedSchemaName="My Schema"
QuotedCatalogName="My Database"
UnquotedTableName=MyTable
UnquotedSchemaName=My Schema
UnquotedCatalogName=My Database


=== AdbConnection.SchemaInformationCollection ===
Note: The metadata schemas can be retrieved with AdbConnection.GetSchema().
The returned information is provided from the .NET provider as-is. Some collections
can be inaccurate, and different values can also be needed for different purposes,
which is why database specific actionETL providers can be created that replace
individual values with the desired ones. See the vendor provider documentation for
details on the returned information.

CollectionName=MetaDataCollections
IsCommon=True
NumberOfRestrictions=0
NumberOfIdentifierParts=0

CollectionName=DataSourceInformation
IsCommon=True
NumberOfRestrictions=0
NumberOfIdentifierParts=0

CollectionName=DataTypes
IsCommon=False
NumberOfRestrictions=0
NumberOfIdentifierParts=0

CollectionName=ReservedWords
IsCommon=False
NumberOfRestrictions=0
NumberOfIdentifierParts=0

CollectionName=Catalogs
IsCommon=False
NumberOfRestrictions=1
NumberOfIdentifierParts=1

CollectionName=Columns
IsCommon=False
NumberOfRestrictions=4
NumberOfIdentifierParts=4

CollectionName=Indexes
IsCommon=False
NumberOfRestrictions=4
NumberOfIdentifierParts=3

CollectionName=IndexColumns
IsCommon=False
NumberOfRestrictions=5
NumberOfIdentifierParts=4

CollectionName=Tables
IsCommon=False
NumberOfRestrictions=4
NumberOfIdentifierParts=3

CollectionName=Views
IsCommon=False
NumberOfRestrictions=3
NumberOfIdentifierParts=3

CollectionName=ViewColumns
IsCommon=False
NumberOfRestrictions=4
NumberOfIdentifierParts=4

CollectionName=ForeignKeys
IsCommon=False
NumberOfRestrictions=4
NumberOfIdentifierParts=3

CollectionName=Triggers
IsCommon=False
NumberOfRestrictions=4
NumberOfIdentifierParts=0

See Also