Db\Dialect

implements Phalcon\Db\DialectInterface

Source on GitHub

This is the base class to each database dialect. This implements common methods to transform intermediate code into its RDBMS related syntax

Methods

public registerCustomFunction (mixed $name, mixed $customFunction)

Registers custom SQL functions

public getCustomFunctions ()

Returns registered functions

final public escapeSchema (mixed $str, [mixed $escapeChar])

Escape Schema

final public escape (mixed $str, [mixed $escapeChar])

Escape identifiers

public limit (mixed $sqlQuery, mixed $number)

Generates the SQL for LIMIT clause

$sql = $dialect->limit('SELECT * FROM robots', 10);
    echo $sql; // SELECT * FROM robots LIMIT 10

    $sql = $dialect->limit('SELECT * FROM robots', [10, 50]);
    echo $sql; // SELECT * FROM robots LIMIT 10 OFFSET 50

public forUpdate (mixed $sqlQuery)

Returns a SQL modified with a FOR UPDATE clause

$sql = $dialect->forUpdate('SELECT * FROM robots');
 echo $sql; // SELECT * FROM robots FOR UPDATE

public sharedLock (mixed $sqlQuery)

Returns a SQL modified with a LOCK IN SHARE MODE clause

$sql = $dialect->sharedLock('SELECT * FROM robots');
 echo $sql; // SELECT * FROM robots LOCK IN SHARE MODE

final public getColumnList (array $columnList, [mixed $escapeChar], [mixed $bindCounts])

Gets a list of columns with escaped identifiers

echo $dialect->getColumnList(array('column1', 'column'));

final public getSqlColumn (mixed $column, [mixed $escapeChar], [mixed $bindCounts])

Resolve Column expressions

public getSqlExpression (array $expression, [mixed $escapeChar], [mixed $bindCounts])

Transforms an intermediate representation for an expression into a database system valid expression

final public getSqlTable (mixed $table, [mixed $escapeChar])

Transform an intermediate representation of a schema/table into a database system valid expression

public select (array $definition)

Builds a SELECT statement

public supportsSavepoints ()

Checks whether the platform supports savepoints

public supportsReleaseSavepoints ()

Checks whether the platform supports releasing savepoints.

public createSavepoint (mixed $name)

Generate SQL to create a new savepoint

public releaseSavepoint (mixed $name)

Generate SQL to release a savepoint

public rollbackSavepoint (mixed $name)

Generate SQL to rollback a savepoint

final protected getSqlExpressionScalar (array $expression, [mixed $escapeChar], [mixed $bindCounts])

Resolve Column expressions

final protected getSqlExpressionObject (array $expression, [mixed $escapeChar], [mixed $bindCounts])

Resolve object expressions

final protected getSqlExpressionQualified (array $expression, [mixed $escapeChar])

Resolve qualified expressions

final protected getSqlExpressionBinaryOperations (array $expression, [mixed $escapeChar], [mixed $bindCounts])

Resolve binary operations expressions

final protected getSqlExpressionUnaryOperations (array $expression, [mixed $escapeChar], [mixed $bindCounts])

Resolve unary operations expressions

final protected getSqlExpressionFunctionCall (array $expression, mixed $escapeChar, [mixed $bindCounts])

Resolve function calls

final protected getSqlExpressionList (array $expression, [mixed $escapeChar], [mixed $bindCounts])

Resolve Lists

final protected getSqlExpressionAll (array $expression, [mixed $escapeChar])

Resolve *

final protected getSqlExpressionCastValue (array $expression, [mixed $escapeChar], [mixed $bindCounts])

Resolve CAST of values

final protected getSqlExpressionConvertValue (array $expression, [mixed $escapeChar], [mixed $bindCounts])

Resolve CONVERT of values encodings

final protected getSqlExpressionCase (array $expression, [mixed $escapeChar], [mixed $bindCounts])

Resolve CASE expressions

final protected getSqlExpressionFrom (mixed $expression, [mixed $escapeChar])

Resolve a FROM clause

final protected getSqlExpressionJoins (mixed $expression, [mixed $escapeChar], [mixed $bindCounts])

Resolve a JOINs clause

final protected getSqlExpressionWhere (mixed $expression, [mixed $escapeChar], [mixed $bindCounts])

Resolve a WHERE clause

final protected getSqlExpressionGroupBy (mixed $expression, [mixed $escapeChar], [mixed $bindCounts])

Resolve a GROUP BY clause

final protected getSqlExpressionHaving (array $expression, [mixed $escapeChar], [mixed $bindCounts])

Resolve a HAVING clause

final protected getSqlExpressionOrderBy (mixed $expression, [mixed $escapeChar], [mixed $bindCounts])

Resolve an ORDER BY clause

final protected getSqlExpressionLimit (mixed $expression, [mixed $escapeChar], [mixed $bindCounts])

Resolve a LIMIT clause

protected prepareColumnAlias (mixed $qualified, [mixed $alias], [mixed $escapeChar])

Prepares column for this RDBMS

protected prepareTable (mixed $table, [mixed $schema], [mixed $alias], [mixed $escapeChar])

Prepares table for this RDBMS

protected prepareQualified (mixed $column, [mixed $domain], [mixed $escapeChar])

Prepares qualified for this RDBMS

abstract public getColumnDefinition (Phalcon\Db\ColumnInterface $column) inherited from Phalcon\Db\DialectInterface

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abstract public addColumn (mixed $tableName, mixed $schemaName, Phalcon\Db\ColumnInterface $column) inherited from Phalcon\Db\DialectInterface

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abstract public modifyColumn (mixed $tableName, mixed $schemaName, Phalcon\Db\ColumnInterface $column, [Phalcon\Db\ColumnInterface $currentColumn]) inherited from Phalcon\Db\DialectInterface

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abstract public dropColumn (mixed $tableName, mixed $schemaName, mixed $columnName) inherited from Phalcon\Db\DialectInterface

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abstract public addIndex (mixed $tableName, mixed $schemaName, Phalcon\Db\IndexInterface $index) inherited from Phalcon\Db\DialectInterface

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abstract public dropIndex (mixed $tableName, mixed $schemaName, mixed $indexName) inherited from Phalcon\Db\DialectInterface

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abstract public addPrimaryKey (mixed $tableName, mixed $schemaName, Phalcon\Db\IndexInterface $index) inherited from Phalcon\Db\DialectInterface

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abstract public dropPrimaryKey (mixed $tableName, mixed $schemaName) inherited from Phalcon\Db\DialectInterface

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abstract public addForeignKey (mixed $tableName, mixed $schemaName, Phalcon\Db\ReferenceInterface $reference) inherited from Phalcon\Db\DialectInterface

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abstract public dropForeignKey (mixed $tableName, mixed $schemaName, mixed $referenceName) inherited from Phalcon\Db\DialectInterface

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abstract public createTable (mixed $tableName, mixed $schemaName, array $definition) inherited from Phalcon\Db\DialectInterface

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abstract public createView (mixed $viewName, array $definition, [mixed $schemaName]) inherited from Phalcon\Db\DialectInterface

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abstract public dropTable (mixed $tableName, mixed $schemaName) inherited from Phalcon\Db\DialectInterface

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abstract public dropView (mixed $viewName, [mixed $schemaName], [mixed $ifExists]) inherited from Phalcon\Db\DialectInterface

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abstract public tableExists (mixed $tableName, [mixed $schemaName]) inherited from Phalcon\Db\DialectInterface

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abstract public viewExists (mixed $viewName, [mixed $schemaName]) inherited from Phalcon\Db\DialectInterface

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abstract public describeColumns (mixed $table, [mixed $schema]) inherited from Phalcon\Db\DialectInterface

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abstract public listTables ([mixed $schemaName]) inherited from Phalcon\Db\DialectInterface

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abstract public describeIndexes (mixed $table, [mixed $schema]) inherited from Phalcon\Db\DialectInterface

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abstract public describeReferences (mixed $table, [mixed $schema]) inherited from Phalcon\Db\DialectInterface

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abstract public tableOptions (mixed $table, [mixed $schema]) inherited from Phalcon\Db\DialectInterface

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