목차
QueryDSL - QueryDsl 페이징 사용하기
QueryDSL - 사용자 정의 Repository
QueryDSL - 동적 쿼리와 성능 최적화 조회
QueryDSL - 순수 JPA 리포지토리와 Querydsl
QueryDSL - SQL Function 호출하기
Post not found: jpa/querydsl/querydsl-10
QueryDSL - 동적 쿼리
QueryDSL - 프로젝션과 결과 반환
QueryDSL - 조인
QueryDSL - 집계
QueryDSL - 결과 조회
QueryDSL - 검색 조건 쿼리
QueryDSL - Q-Type 활용
QueryDSL - JPA JPQL vs JPA QueryDSL
QueryDSL 시작하기
SQL Function 호출하기@Testpublic void sqlFunction(){ List<String> result = queryFactory .select( Expressions.stringTemplate("function('replace', {0}, {1}, {2})", member.username, "member", "M") ).from(member) .fetch(); for (String s : result) { System.out.println("s = " + s); }}
@Testpublic void sqlFunction2(){ queryFactory .select(member.username) .from(member) .where(member.username.eq(Expressions.stringTemplate("function('lower', {0})", member.username)));}
registerColumnType( Types.BOOLEAN, "boolean" );registerColumnType( Types.BIGINT, "bigint" );registerColumnType( Types.BINARY, "binary" );registerColumnType( Types.BIT, "boolean" );registerColumnType( Types.CHAR, "char($l)" );registerColumnType( Types.DATE, "date" );registerColumnType( Types.DECIMAL, "decimal($p,$s)" );registerColumnType( Types.NUMERIC, buildId >= 201 ? "numeric($p,$s)" : "decimal($p,$s)" );registerColumnType( Types.DOUBLE, "double" );registerColumnType( Types.FLOAT, "float" );registerColumnType( Types.INTEGER, "integer" );registerColumnType( Types.LONGVARBINARY, "longvarbinary" );// H2 does define "longvarchar", but it is a simple alias to "varchar"registerColumnType( Types.LONGVARCHAR, String.format( "varchar(%d)", Integer.MAX_VALUE ) );registerColumnType( Types.REAL, "real" );registerColumnType( Types.SMALLINT, "smallint" );registerColumnType( Types.TINYINT, "tinyint" );registerColumnType( Types.TIME, "time" );registerColumnType( Types.TIMESTAMP, "timestamp" );registerColumnType( Types.VARCHAR, "varchar($l)" );registerColumnType( Types.VARBINARY, buildId >= 201 ? "varbinary($l)" : "binary($l)" );registerColumnType( Types.BLOB, "blob" );registerColumnType( Types.CLOB, "clob" );if ( isVersion2 ) { registerColumnType( Types.LONGVARCHAR, "character varying" ); registerColumnType( Types.BINARY, "binary($l)" ); registerFunction( "str", new SQLFunctionTemplate( StandardBasicTypes.STRING, "cast(?1 as character varying)") );}// Aggregations ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~registerFunction( "avg", new AvgWithArgumentCastFunction( "double" ) );// select topic, syntax from information_schema.help// where section like 'Function%' order by section, topic//// see also -> http://www.h2database.com/html/functions.html// Numeric Functions ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~registerFunction( "acos", new StandardSQLFunction( "acos", StandardBasicTypes.DOUBLE ) );registerFunction( "asin", new StandardSQLFunction( "asin", StandardBasicTypes.DOUBLE ) );registerFunction( "atan", new StandardSQLFunction( "atan", StandardBasicTypes.DOUBLE ) );registerFunction( "atan2", new StandardSQLFunction( "atan2", StandardBasicTypes.DOUBLE ) );registerFunction( "bitand", new StandardSQLFunction( "bitand", StandardBasicTypes.INTEGER ) );registerFunction( "bitor", new StandardSQLFunction( "bitor", StandardBasicTypes.INTEGER ) );registerFunction( "bitxor", new StandardSQLFunction( "bitxor", StandardBasicTypes.INTEGER ) );registerFunction( "ceiling", new StandardSQLFunction( "ceiling", StandardBasicTypes.DOUBLE ) );registerFunction( "cos", new StandardSQLFunction( "cos", StandardBasicTypes.DOUBLE ) );registerFunction( "compress", new StandardSQLFunction( "compress", StandardBasicTypes.BINARY ) );registerFunction( "cot", new StandardSQLFunction( "cot", StandardBasicTypes.DOUBLE ) );registerFunction( "decrypt", new StandardSQLFunction( "decrypt", StandardBasicTypes.BINARY ) );registerFunction( "degrees", new StandardSQLFunction( "degrees", StandardBasicTypes.DOUBLE ) );registerFunction( "encrypt", new StandardSQLFunction( "encrypt", StandardBasicTypes.BINARY ) );registerFunction( "exp", new StandardSQLFunction( "exp", StandardBasicTypes.DOUBLE ) );registerFunction( "expand", new StandardSQLFunction( "compress", StandardBasicTypes.BINARY ) );registerFunction( "floor", new StandardSQLFunction( "floor", StandardBasicTypes.DOUBLE ) );registerFunction( "hash", new StandardSQLFunction( "hash", StandardBasicTypes.BINARY ) );registerFunction( "log", new StandardSQLFunction( "log", StandardBasicTypes.DOUBLE ) );registerFunction( "log10", new StandardSQLFunction( "log10", StandardBasicTypes.DOUBLE ) );registerFunction( "pi", new NoArgSQLFunction( "pi", StandardBasicTypes.DOUBLE ) );registerFunction( "power", new StandardSQLFunction( "power", StandardBasicTypes.DOUBLE ) );registerFunction( "radians", new StandardSQLFunction( "radians", StandardBasicTypes.DOUBLE ) );registerFunction( "rand", new NoArgSQLFunction( "rand", StandardBasicTypes.DOUBLE ) );registerFunction( "round", new StandardSQLFunction( "round", StandardBasicTypes.DOUBLE ) );registerFunction( "roundmagic", new StandardSQLFunction( "roundmagic", StandardBasicTypes.DOUBLE ) );registerFunction( "sign", new StandardSQLFunction( "sign", StandardBasicTypes.INTEGER ) );registerFunction( "sin", new StandardSQLFunction( "sin", StandardBasicTypes.DOUBLE ) );registerFunction( "tan", new StandardSQLFunction( "tan", StandardBasicTypes.DOUBLE ) );registerFunction( "truncate", new StandardSQLFunction( "truncate", StandardBasicTypes.DOUBLE ) );// String Functions ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~registerFunction( "ascii", new StandardSQLFunction( "ascii", StandardBasicTypes.INTEGER ) );registerFunction( "char", new StandardSQLFunction( "char", StandardBasicTypes.CHARACTER ) );registerFunction( "concat", new VarArgsSQLFunction( StandardBasicTypes.STRING, "(", "||", ")" ) );registerFunction( "difference", new StandardSQLFunction( "difference", StandardBasicTypes.INTEGER ) );registerFunction( "hextoraw", new StandardSQLFunction( "hextoraw", StandardBasicTypes.STRING ) );registerFunction( "insert", new StandardSQLFunction( "lower", StandardBasicTypes.STRING ) );registerFunction( "left", new StandardSQLFunction( "left", StandardBasicTypes.STRING ) );registerFunction( "lcase", new StandardSQLFunction( "lcase", StandardBasicTypes.STRING ) );registerFunction( "ltrim", new StandardSQLFunction( "ltrim", StandardBasicTypes.STRING ) );registerFunction( "octet_length", new StandardSQLFunction( "octet_length", StandardBasicTypes.INTEGER ) );registerFunction( "position", new StandardSQLFunction( "position", StandardBasicTypes.INTEGER ) );registerFunction( "rawtohex", new StandardSQLFunction( "rawtohex", StandardBasicTypes.STRING ) );registerFunction( "repeat", new StandardSQLFunction( "repeat", StandardBasicTypes.STRING ) );registerFunction( "replace", new StandardSQLFunction( "replace", StandardBasicTypes.STRING ) );registerFunction( "right", new StandardSQLFunction( "right", StandardBasicTypes.STRING ) );registerFunction( "rtrim", new StandardSQLFunction( "rtrim", StandardBasicTypes.STRING ) );registerFunction( "soundex", new StandardSQLFunction( "soundex", StandardBasicTypes.STRING ) );registerFunction( "space", new StandardSQLFunction( "space", StandardBasicTypes.STRING ) );registerFunction( "stringencode", new StandardSQLFunction( "stringencode", StandardBasicTypes.STRING ) );registerFunction( "stringdecode", new StandardSQLFunction( "stringdecode", StandardBasicTypes.STRING ) );registerFunction( "stringtoutf8", new StandardSQLFunction( "stringtoutf8", StandardBasicTypes.BINARY ) );registerFunction( "ucase", new StandardSQLFunction( "ucase", StandardBasicTypes.STRING ) );registerFunction( "utf8tostring", new StandardSQLFunction( "utf8tostring", StandardBasicTypes.STRING ) );// Time and Date Functions ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~registerFunction( "curdate", new NoArgSQLFunction( "curdate", StandardBasicTypes.DATE ) );registerFunction( "curtime", new NoArgSQLFunction( "curtime", StandardBasicTypes.TIME ) );registerFunction( "curtimestamp", new NoArgSQLFunction( "curtimestamp", StandardBasicTypes.TIME ) );registerFunction( "current_date", new NoArgSQLFunction( "current_date", StandardBasicTypes.DATE ) );// H2 made a nasty breaking change that changed the type of// - current_timestamp to timestamp with time zone// - current_time to time with time zone// and also refuses to implicitly convert the typeregisterFunction( "current_time", new NoArgSQLFunction( buildId >= 200 ? "localtime" : "current_time", StandardBasicTypes.TIME ) );registerFunction( "current_timestamp", new NoArgSQLFunction( buildId >= 200 ? "localtimestamp" : "current_timestamp", StandardBasicTypes.TIMESTAMP ) );registerFunction( "datediff", new StandardSQLFunction( "datediff", StandardBasicTypes.INTEGER ) );registerFunction( "dayname", new StandardSQLFunction( "dayname", StandardBasicTypes.STRING ) );registerFunction( "dayofmonth", new StandardSQLFunction( "dayofmonth", StandardBasicTypes.INTEGER ) );registerFunction( "dayofweek", new StandardSQLFunction( "dayofweek", StandardBasicTypes.INTEGER ) );registerFunction( "dayofyear", new StandardSQLFunction( "dayofyear", StandardBasicTypes.INTEGER ) );registerFunction( "monthname", new StandardSQLFunction( "monthname", StandardBasicTypes.STRING ) );registerFunction( "now", new NoArgSQLFunction( "now", StandardBasicTypes.TIMESTAMP ) );registerFunction( "quarter", new StandardSQLFunction( "quarter", StandardBasicTypes.INTEGER ) );registerFunction( "week", new StandardSQLFunction( "week", StandardBasicTypes.INTEGER ) );// System Functions ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~registerFunction( "database", new NoArgSQLFunction( "database", StandardBasicTypes.STRING ) );registerFunction( "user", new NoArgSQLFunction( "user", StandardBasicTypes.STRING ) );getDefaultProperties().setProperty( AvailableSettings.STATEMENT_BATCH_SIZE, DEFAULT_BATCH_SIZE );// http://code.google.com/p/h2database/issues/detail?id=235getDefaultProperties().setProperty( AvailableSettings.NON_CONTEXTUAL_LOB_CREATION, "true" );