Package org.pgcodekeeper.core.database.pg.parser.statement

Class PgCreateStatistics

java.lang.Object

org.pgcodekeeper.core.database.base.parser.statement.ParserAbstract<PgDatabase>

org.pgcodekeeper.core.database.pg.parser.statement.PgParserAbstract

org.pgcodekeeper.core.database.pg.parser.statement.PgCreateStatistics

public final class PgCreateStatistics
extends PgParserAbstract

Parser for PostgreSQL CREATE STATISTICS statements.

This class handles parsing of extended statistics definitions including statistics kinds (ndistinct, dependencies, mcv), target table references, and column expressions. Extended statistics provide improved query planning by collecting multi-column statistics.

Constructor Summary

Constructors

Constructor	Description
PgCreateStatistics(SQLParser.Create_statistics_statementContext ctx, PgDatabase db, org.antlr.v4.runtime.CommonTokenStream stream, ISettings settings)	Constructs a new CreateStatistics parser.

Method Summary

Modifier and Type	Method	Description
void	parseObject()	Parses a database object from the current context.
void	parseStatistics(PgStatistics stat)	Parses statistics configuration from the statement context.

Methods inherited from class org.pgcodekeeper.core.database.pg.parser.statement.PgParserAbstract

fillOptionParams, fillOptionParams, getIdentifiers, getIdentifiers, getIdentifiers, getTypeName, parseArguments, parseOperatorSignature, parseSignature, unquoteQuotedString

Methods inherited from class org.pgcodekeeper.core.database.base.parser.statement.ParserAbstract

getFullCtxText, getFullCtxText, getFullCtxText, getSafe, getSafe, parseArgMode, parseObject

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

PgCreateStatistics

public PgCreateStatistics(SQLParser.Create_statistics_statementContext ctx,
 PgDatabase db,
 org.antlr.v4.runtime.CommonTokenStream stream,
 ISettings settings)

Constructs a new CreateStatistics parser.

Parameters:

ctx - the CREATE STATISTICS statement context

db - the PostgreSQL database object

stream - the token stream for parsing expressions

settings - the ISettings object

Method Details

parseObject

public void parseObject()

Description copied from class: ParserAbstract

Parses a database object from the current context. Must be implemented by concrete subclasses to handle specific object types.

Specified by:

parseObject in class ParserAbstract<PgDatabase>

parseStatistics

public void parseStatistics(PgStatistics stat)

Parses statistics configuration from the statement context.

Parameters:

stat - the statistics object to populate with parsed data