feat(postgre): #412 update merge and copy's option's syntax and then update unit test

Author: zhaoge

src/grammar/postgresql/PostgreSqlLexer.g4

@@ -668,6 +668,10 @@ KW_EXTENDED           : 'EXTENDED';
 KW_MAIN               : 'MAIN';
 KW_SKIP_LOCKED        : 'SKIP_LOCKED';
 KW_BUFFER_USAGE_LIMIT : 'BUFFER_USAGE_LIMIT';
+
+KW_FORCE_QUOTE    : 'FORCE_QUOTE';
+KW_FORCE_NOT_NULL : 'FORCE_NOT_NULL';
+KW_FORCE_NULL     : 'FORCE_NULL';
 //
 
 // IDENTIFIERS (4.1.1)

src/grammar/postgresql/PostgreSqlParser.g4

@@ -559,7 +559,7 @@ copystmt
     ) KW_WITH? copy_options
     ;
 
-copy_options
+copy_options_noparens
     : (
         KW_BINARY
         | KW_FREEZE
@@ -569,8 +569,17 @@ copy_options
         | KW_FORCE KW_QUOTE (column_list | STAR)
         | KW_FORCE KW_NOT? KW_NULL column_list
         | KW_ENCODING sconst
+        | (KW_FORCE_QUOTE | KW_FORCE_NOT_NULL | KW_FORCE_NULL) (
+            OPEN_PAREN (column_list | STAR) (COMMA (column_list | STAR))* CLOSE_PAREN
+        )?
     )*
-    | OPEN_PAREN copy_generic_opt_elem (COMMA copy_generic_opt_elem)* CLOSE_PAREN
+    ;
+
+copy_options
+    : copy_options_noparens
+    | OPEN_PAREN (copy_options_noparens | copy_generic_opt_elem) (
+        COMMA (copy_options_noparens | copy_generic_opt_elem)
+    )* CLOSE_PAREN
     ;
 
 copy_generic_opt_elem
@@ -1911,11 +1920,13 @@ prep_type_clause
     : OPEN_PAREN typename (COMMA typename)* CLOSE_PAREN
     ;
 
+// https://www.postgresql.org/docs/17/sql-select.html
 preparablestmt
     : selectstmt
     | insertstmt
     | updatestmt
     | deletestmt
+    | mergestmt
     ;
 
 executestmt
@@ -3558,8 +3569,10 @@ stmt_move
     : KW_MOVE opt_fetch_direction? cursor_variable SEMI
     ;
 
+// https://www.postgresql.org/docs/17/sql-merge.html
 mergestmt
     : with_clause? KW_MERGE KW_INTO (KW_ONLY)? table_name (STAR)? (KW_AS? colid)? KW_USING data_source KW_ON expression merge_when_clause+
+        returning_clause?
     ;
 
 data_source

src/lib/postgresql/PostgreSqlLexer.interp

@@ -546,48 +546,51 @@ KW_EXTENDED=545
 KW_MAIN=546
 KW_SKIP_LOCKED=547
 KW_BUFFER_USAGE_LIMIT=548
-Identifier=549
-QuotedIdentifier=550
-UnterminatedQuotedIdentifier=551
-InvalidQuotedIdentifier=552
-InvalidUnterminatedQuotedIdentifier=553
-UnicodeQuotedIdentifier=554
-UnterminatedUnicodeQuotedIdentifier=555
-InvalidUnicodeQuotedIdentifier=556
-InvalidUnterminatedUnicodeQuotedIdentifier=557
-StringConstant=558
-UnterminatedStringConstant=559
-UnicodeEscapeStringConstant=560
-UnterminatedUnicodeEscapeStringConstant=561
-BeginDollarStringConstant=562
-BinaryStringConstant=563
-UnterminatedBinaryStringConstant=564
-InvalidBinaryStringConstant=565
-InvalidUnterminatedBinaryStringConstant=566
-HexadecimalStringConstant=567
-UnterminatedHexadecimalStringConstant=568
-InvalidHexadecimalStringConstant=569
-InvalidUnterminatedHexadecimalStringConstant=570
-Integral=571
-NumericFail=572
-Numeric=573
-PLSQLVARIABLENAME=574
-PLSQLIDENTIFIER=575
-Whitespace=576
-Newline=577
-LineComment=578
-BlockComment=579
-UnterminatedBlockComment=580
-MetaCommand=581
-EndMetaCommand=582
-ErrorCharacter=583
-EscapeStringConstant=584
-UnterminatedEscapeStringConstant=585
-InvalidEscapeStringConstant=586
-InvalidUnterminatedEscapeStringConstant=587
-DollarText=588
-EndDollarStringConstant=589
-AfterEscapeStringConstantWithNewlineMode_Continued=590
+KW_FORCE_QUOTE=549
+KW_FORCE_NOT_NULL=550
+KW_FORCE_NULL=551
+Identifier=552
+QuotedIdentifier=553
+UnterminatedQuotedIdentifier=554
+InvalidQuotedIdentifier=555
+InvalidUnterminatedQuotedIdentifier=556
+UnicodeQuotedIdentifier=557
+UnterminatedUnicodeQuotedIdentifier=558
+InvalidUnicodeQuotedIdentifier=559
+InvalidUnterminatedUnicodeQuotedIdentifier=560
+StringConstant=561
+UnterminatedStringConstant=562
+UnicodeEscapeStringConstant=563
+UnterminatedUnicodeEscapeStringConstant=564
+BeginDollarStringConstant=565
+BinaryStringConstant=566
+UnterminatedBinaryStringConstant=567
+InvalidBinaryStringConstant=568
+InvalidUnterminatedBinaryStringConstant=569
+HexadecimalStringConstant=570
+UnterminatedHexadecimalStringConstant=571
+InvalidHexadecimalStringConstant=572
+InvalidUnterminatedHexadecimalStringConstant=573
+Integral=574
+NumericFail=575
+Numeric=576
+PLSQLVARIABLENAME=577
+PLSQLIDENTIFIER=578
+Whitespace=579
+Newline=580
+LineComment=581
+BlockComment=582
+UnterminatedBlockComment=583
+MetaCommand=584
+EndMetaCommand=585
+ErrorCharacter=586
+EscapeStringConstant=587
+UnterminatedEscapeStringConstant=588
+InvalidEscapeStringConstant=589
+InvalidUnterminatedEscapeStringConstant=590
+DollarText=591
+EndDollarStringConstant=592
+AfterEscapeStringConstantWithNewlineMode_Continued=593
 '$'=1
 '('=2
 ')'=3
@@ -1134,5 +1137,8 @@ AfterEscapeStringConstantWithNewlineMode_Continued=590
 'MAIN'=546
 'SKIP_LOCKED'=547
 'BUFFER_USAGE_LIMIT'=548
-'\\\\'=582
-'\''=590
+'FORCE_QUOTE'=549
+'FORCE_NOT_NULL'=550
+'FORCE_NULL'=551
+'\\\\'=585
+'\''=593