3
......................................................................................................................................... 191. ......................................................................................................................... 21
.................................................................................................................... 21 SQL ........................................................................................................ 21 SQL ................................................................................................................. 21 ................................................................................................... 22
: , , ..................................... 22 .................................................................................................................... 23 ................................................................................................................................. 24 ................................................................................... 25 ........................................................................................................................... 25
2. .............................................................................................................................. 27 ............................................................................................... 29
SMALLINT ........................................................................................................................ 29INTEGER .......................................................................................................................... 29BIGINT .............................................................................................................................. 30
...................................................................................... 31FLOAT .............................................................................................................................. 31DOUBLE PRECISION ...................................................................................................... 31
................................................................................ 31NUMERIC ......................................................................................................................... 32DECIMAL .......................................................................................................................... 32
................................................................... 33DATE ................................................................................................................................ 33TIME ................................................................................................................................. 33TIMESTAMP ..................................................................................................................... 34, ................................................. 34
..................................................................................................... 35UNICODE ......................................................................................................................... 35 ............................................................................................... 36 ................................................................................... 36 .................................................................................. 36
................................................................................. 36 UTF-8 ....................................................... 37
............................................................................. 37CHAR ............................................................................................................................... 38VARCHAR ........................................................................................................................ 38NCHAR ............................................................................................................................. 39 ..................................................................................................... 39
.................................... 39BOOLEAN ................................................................................................................................ 40 ......................................................................................................... 42
BLOB ................................................................................................................................ 42 BLOB ........................................................................................................ 43 BLOB ................................................................................................. 43
........................................................................................................................... 44 ................................................................................................... 45
SQL_NULL .................................................................................................. 45 ............................................................................................. 46
.......................................................................... 47 ..................................................................................... 47
SQL Firebird 3.0
4
........................................................................... 47 CAST ............................................... 47 ......................................................... 48 (datetime) ............................. 51
...................................................................... 51 ........................................................................ 52
........................................................................................................... 52 ............................................................................. 53 ......................................................................................................... 53 ....................................................................................................... 54 ......................................................................................................... 55
3. ............................................................................................................ 56 .............................................................................................................................. 56
SQL .............................................................................................................. 58 ........................................................................................... 58 ......................................................................................... 58 ................................................................................. 59 ............................................................................................ 59 ........................................................................................... 59
NEXT VALUE FOR .......................................................................................................... 60 ..................................................................................................... 60
CASE ........................................................................................................................ 61NULL ....................................................................................................... 62
NULL ........................................................................ 62NULL ............................................................................ 63
............................................................................................................................. 63 ..................................................................................... 63 (Singletons) ................................ 64
............................................................................................................................... 65 ................................................................................................................... 65 .................................................................................................... 65 ........................................................................................ 66
BETWEEN ................................................................................................................ 66LIKE .......................................................................................................................... 66
.................................................................................. 67 ESCAPE ............. 67
STARTING WITH ..................................................................................................... 68CONTAINING ........................................................................................................... 69SIMILAR TO ..............................
