From d10e96a387c3cf35ccecce304a3dddae365bddab Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9C=B1=E9=87=91=E5=8B=87?= <zhujinyong@chandao.com>
Date: Sun, 28 Dec 2025 21:23:01 +0800
Subject: [PATCH] * [pgsql] Use "IF" insteal of IF.

---
 db/dm_function.sql    | 22 ++++++++++++++++
 db/pgsql_function.sql | 60 ++++++++++++++++++++++++++++++++++++++-----
 lib/dbh/dbh.class.php | 24 ++---------------
 3 files changed, 78 insertions(+), 28 deletions(-)

diff --git a/db/dm_function.sql b/db/dm_function.sql
index 31b13380a8..3eaf655a0c 100644
--- a/db/dm_function.sql
+++ b/db/dm_function.sql
@@ -45,3 +45,25 @@ BEGIN
         -- 返回res
         RETURN res;
 END FIND_IN_SET;
+/
+
+CREATE OR REPLACE FUNCTION "IF"(
+    p_condition  BOOLEAN,        -- 判断条件
+    p_true_val   ANYTYPE,        -- true分支返回值（任意类型）
+    p_false_val  ANYTYPE         -- false分支返回值（任意类型）
+) RETURNS ANYTYPE
+AS
+BEGIN
+    -- 仅校验条件非空，不校验类型
+    IF p_condition IS NULL THEN
+        RAISE_APPLICATION_ERROR(-20001, '判断条件不能为NULL');
+    END IF;
+
+    -- 核心逻辑：直接返回不同类型值
+    IF p_condition THEN
+        RETURN p_true_val;       -- 如：字符串
+    ELSE
+        RETURN p_false_val;      -- 如：数值
+    END IF;
+END;
+/
diff --git a/db/pgsql_function.sql b/db/pgsql_function.sql
index 459d1f8de5..1fec8ffa20 100644
--- a/db/pgsql_function.sql
+++ b/db/pgsql_function.sql
@@ -256,7 +256,7 @@ END;
 $$ LANGUAGE plpgsql;
 --
 
-CREATE OR REPLACE FUNCTION IF(
+CREATE OR REPLACE FUNCTION "IF"(
     condition BOOLEAN,
     true_val BOOLEAN,
     false_val BOOLEAN
@@ -272,7 +272,7 @@ $$ LANGUAGE plpgsql;
 
 --
 
-CREATE OR REPLACE FUNCTION IF(
+CREATE OR REPLACE FUNCTION "IF"(
     condition BOOLEAN,
     true_val DOUBLE PRECISION,
     false_val INTEGER
@@ -288,7 +288,55 @@ $$ LANGUAGE plpgsql;
 
 --
 
-CREATE OR REPLACE FUNCTION IF(
+CREATE OR REPLACE FUNCTION "IF"(
+    condition BOOLEAN,
+    true_val DOUBLE PRECISION,
+    false_val DOUBLE PRECISION
+) RETURNS DOUBLE PRECISION AS $$
+BEGIN
+    IF condition THEN
+        RETURN true_val;
+    ELSE
+        RETURN false_val;
+    END IF;
+END;
+$$ LANGUAGE plpgsql;
+
+--
+
+CREATE OR REPLACE FUNCTION "IF"(
+    condition BOOLEAN,
+    true_val TEXT,
+    false_val TEXT
+) RETURNS TEXT AS $$
+BEGIN
+    IF condition THEN
+        RETURN true_val;
+    ELSE
+        RETURN false_val;
+    END IF;
+END;
+$$ LANGUAGE plpgsql;
+
+--
+
+CREATE OR REPLACE FUNCTION "IF"(
+    condition BOOLEAN,
+    true_val INTEGER,
+    false_val INTEGER
+) RETURNS INTEGER AS $$
+BEGIN
+    IF condition THEN
+        RETURN true_val;
+    ELSE
+        RETURN false_val;
+    END IF;
+END;
+$$ LANGUAGE plpgsql;
+
+--
+
+CREATE OR REPLACE FUNCTION "IF"(
     condition BOOLEAN,
     true_val TEXT,
     false_val DATE
@@ -304,7 +352,7 @@ $$ LANGUAGE plpgsql;
 
 --
 
-CREATE OR REPLACE FUNCTION IF(
+CREATE OR REPLACE FUNCTION "IF"(
     condition BOOLEAN,
     true_val DATE,
     false_val DATE
@@ -320,7 +368,7 @@ $$ LANGUAGE plpgsql;
 
 --
 
-CREATE OR REPLACE FUNCTION IF(
+CREATE OR REPLACE FUNCTION "IF"(
     condition BOOLEAN,
     true_val  timestamp without time zone,
     false_val DATE
@@ -336,7 +384,7 @@ $$ LANGUAGE plpgsql;
 
 --
 
-CREATE OR REPLACE FUNCTION IF(
+CREATE OR REPLACE FUNCTION "IF"(
     condition BOOLEAN,
     true_val  timestamp without time zone,
     false_val timestamp without time zone
diff --git a/lib/dbh/dbh.class.php b/lib/dbh/dbh.class.php
index 00f5602603..89aa19f1b2 100644
--- a/lib/dbh/dbh.class.php
+++ b/lib/dbh/dbh.class.php
@@ -606,28 +606,7 @@ class dbh
 
                 if(stripos($sql, 'CREATE OR REPLACE VIEW ') === 0)
                 {
-                    // Modify if function.
-                    $fieldsBegin = stripos($sql, 'select');
-                    $fieldsEnd   = stripos($sql, 'from');
-                    $fields      = substr($sql, $fieldsBegin+6, $fieldsEnd-$fieldsBegin-6);
-                    $fieldList   = preg_split("/,(?![^(]+\))/", $fields);
-                    foreach($fieldList as $key => $field)
-                    {
-                        $aliasPos = stripos($field, ' AS ');
-                        $subField = substr($field, 0, $aliasPos);
-                        if(stripos($field, 'SUM(') === 0) $subField = substr($subField, 4, -1);
-
-                        $fieldParts = preg_split("/\+(?![^(]+\))/", $subField);
-                        foreach($fieldParts as $pkey => $fieldPart)
-                        {
-                            $originField = trim($fieldPart);
-                            if(stripos($originField, 'if(') === false) continue;
-                            $fieldParts[$pkey] = $this->formatDmIfFunction($originField);
-                        }
-                        $fieldList[$key] = str_replace($subField, implode(' + ', $fieldParts), $field);
-                    }
-                    $fields = implode(',', $fieldList);
-                    $sql = substr($sql, 0, $fieldsBegin+6) . $fields . substr($sql, $fieldsEnd);
+                    $sql = $this->formatField($sql);
                     return str_replace('CREATE OR REPLACE VIEW ', 'CREATE VIEW ', $sql);
                 }
                 elseif(stripos($sql, 'CREATE UNIQUE INDEX') === 0 || stripos($sql, 'CREATE INDEX') === 0)
@@ -833,6 +812,7 @@ class dbh
         if($this->dbConfig->driver == 'dm' || in_array($this->dbConfig->driver, $this->config->pgsqlDriverList))
         {
             $sql = str_replace('`', '"', $sql);
+            $sql = preg_replace('/(?<!\w)if\(/i', '"IF"(', $sql);
         }
 
         return $sql;