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QgsProviderSqlQueryBuilder provides an interface for creation of SQL queries, which can be overridden for backend provider specific SQL syntax. Initially add a virtual method for creation of row limited select * queries.
50 lines
2.0 KiB
Plaintext
50 lines
2.0 KiB
Plaintext
/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/core/providers/qgsprovidersqlquerybuilder.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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class QgsProviderSqlQueryBuilder
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{
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%Docstring(signature="appended")
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Provides an interface for provider-specific creation of SQL queries.
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The :py:class:`QgsProviderSqlQueryBuilder` provides an interface for creation of SQL queries, which
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can be overridden for backend provider specific SQL syntax.
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.. versionadded:: 3.28
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%End
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%TypeHeaderCode
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#include "qgsprovidersqlquerybuilder.h"
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%End
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public:
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virtual ~QgsProviderSqlQueryBuilder();
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virtual QString createLimitQueryForTable( const QString &schema, const QString &name, int limit = 10 ) const;
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%Docstring
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Returns a result size limited SQL query string generated for the given ``schema`` and table ``name``, retrieving all columns for the first ``limit`` rows.
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The base class method returns the SQL query "SELECT * FROM table LIMIT 10". Subclasses may return database specific equivalents to this query.
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%End
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virtual QString quoteIdentifier( const QString &identifier ) const;
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%Docstring
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Returns a properly quoted version of a table/schema ``identifier``.
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%End
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};
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/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/core/providers/qgsprovidersqlquerybuilder.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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