Demonstration of how to extend the if() and iif() SQL functions to support

more than 3 arguments.

FossilOrigin-Name: f13ef591848e7c69694c0af5778dae4d04a071a2f95192fb1dc9d6978dc87c0c

diff --git a/manifest b/manifest
index 993a67392686d973d7ec4acd0b05ab71a8b9c309..93ac2e00d904ba0a3a513f9dde403b25e73cd2d0 100644 (file)
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Use\sTcl_GetString()\sinstead\sof\sTcl_GetCharLength()\sto\stest\sfor\sa\szero-length\nstring\sin\sthe\sTCL\sinterface,\ssince\sthat\sis\smuch\smore\sefficient.
-D 2025-01-21T11:10:16.446
+C Demonstration\sof\show\sto\sextend\sthe\sif()\sand\siif()\sSQL\sfunctions\sto\ssupport\nmore\sthan\s3\sarguments.
+D 2025-01-21T12:33:00.984
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md e108e1e69ae8e8a59e93c455654b8ac9356a11720d3345df2a4743e9590fb20d
@@ -732,7 +732,7 @@ F src/delete.c 03a77ba20e54f0f42ebd8eddf15411ed6bdb06a2c472ac4b6b336521bf7cea42
 F src/expr.c 30a407765d4e4b592f9f958085fb4e8336e54fa46a70ade7f5a67111bc191563
 F src/fault.c 460f3e55994363812d9d60844b2a6de88826e007
 F src/fkey.c 928ed2517e8732113d2b9821aa37af639688d752f4ea9ac6e0e393d713eeb76f
-F src/func.c 89b733a5f513c4bc06b7271384363d5693d62782de8295bc87b97d79862c9714
+F src/func.c 3f084d938c91d7faa7fa645973e60ef210b9dbf6b53ff0a44ce94ffc27bd3622
 F src/global.c a19e4b1ca1335f560e9560e590fc13081e21f670643367f99cb9e8f9dc7d615b
 F src/hash.c 9ee4269fb1d6632a6fecfb9479c93a1f29271bddbbaf215dd60420bcb80c7220
 F src/hash.h 3340ab6e1d13e725571d7cee6d3e3135f0779a7d8e76a9ce0a85971fa3953c51
@@ -2208,8 +2208,11 @@ F tool/version-info.c 3b36468a90faf1bbd59c65fd0eb66522d9f941eedd364fabccd7227350
 F tool/warnings-clang.sh bbf6a1e685e534c92ec2bfba5b1745f34fb6f0bc2a362850723a9ee87c1b31a7
 F tool/warnings.sh 49a486c5069de041aedcbde4de178293e0463ae9918ecad7539eedf0ec77a139
 F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
-P bd5dc92368e41231a07bb59dd3db8942e238129ec7a3c8d785459d9b62bfcba3
-R e87ed836260a3ceb4ad61cd2f818556e
+P a8d9dcfd23fbfcd887e451382836c1e88215984cc01e00be11387dbf4ab26fd8
+R 34c93cf9d01e3c710507a6b6a34500fc
+T *branch * if-many-args
+T *sym-if-many-args *
+T -sym-trunk *
 U drh
-Z 345b10e2ab0f1f1054b6abc135136648
+Z d4669fe91d65f0e0dabff4825fb271ee
 # Remove this line to create a well-formed Fossil manifest.

diff --git a/manifest.uuid b/manifest.uuid
index b56b8e91ab8e91ea0454f4ea88345fb9d9055054..cf24140240b19eeb99edeb0718281540297ce8c6 100644 (file)
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-a8d9dcfd23fbfcd887e451382836c1e88215984cc01e00be11387dbf4ab26fd8
+f13ef591848e7c69694c0af5778dae4d04a071a2f95192fb1dc9d6978dc87c0c

diff --git a/src/func.c b/src/func.c
index 7a4774527d66f792825e54ee69e8dba269b2041e..53d53235180afcafb60a210e0ee078aa2f0a52ef 100644 (file)
--- a/src/func.c
+++ b/src/func.c
@@ -2815,10 +2815,12 @@ void sqlite3RegisterBuiltinFunctions(void){
 #endif /* SQLITE_ENABLE_MATH_FUNCTIONS */
     FUNCTION(sign,               1, 0, 0,      signFunc    ),
     INLINE_FUNC(coalesce,       -1, INLINEFUNC_coalesce, 0 ),
-    INLINE_FUNC(iif,             2, INLINEFUNC_iif,      0 ),
-    INLINE_FUNC(iif,             3, INLINEFUNC_iif,      0 ),
-    INLINE_FUNC(if,              2, INLINEFUNC_iif,      0 ),
-    INLINE_FUNC(if,              3, INLINEFUNC_iif,      0 ),
+    INLINE_FUNC(iif,             0, 0, 0 ),
+    INLINE_FUNC(iif,             1, 0, 0 ),
+    INLINE_FUNC(iif,            -1, INLINEFUNC_iif,      0 ),
+    INLINE_FUNC(if,              0, 0, 0 ),
+    INLINE_FUNC(if,              1, 0, 0 ),
+    INLINE_FUNC(if,             -1, INLINEFUNC_iif,      0 ),
   };
 #ifndef SQLITE_OMIT_ALTERTABLE
   sqlite3AlterFunctions();